ML19254A947

Instructions for Operating & Repairing Consolidated Electromatic Relief Valve. B&W Instruction Book 620-0006

ML19254A947
Person / Time
Site:	Crane
Issue date:	03/28/1979
From:	DRESSER INDUSTRIES, INC.
To:
References
PROC-790328, TM-0820, TM-820, NUDOCS 7909140493
Download: ML19254A947 (42)

Text

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i., CONTENTS i I General Description...... 3 Installation of the Electromatic@ Relief Valve .......... '.. 3 Mounting of Controller... 3 Function of the Electrical System............................... 3 How th e Valve Op erat es........................................ 4 To Put in Op eration........................................... 4 Adjusting the Set Pressure and the Blowdown...................... 4 To Disassemble Valve for Inspection............................. 6 4 ) Disassembly of Pilot Valve...................................... 6 h Disassembly of Main Valve...................................... 6 i ? Making Repairs to Seats (Lapping and Grinding) 6 Lapping and Grinding Materials 7 Remachining of Discs and Bushings.............................. 8 Main Valve Disc............................................... 8 Pilot Valve D isc........... _................................... 8 Ma ch i m n g Pilo t Dis c........................................... 8 Remachining Seat Bushing to Main Valve....................... 8 Remachining Pilot Valve Bushing 8 Assembly Main Valve... 8 Assembly of Pilot Valve 9 Maintenance Equipment Recommended Tools.................................. 10 Recommended Spare Parts 10 Minimum Blowdown Setting............................... 10 Wiring Diagrams............. 22 Amper. ge Ratings . 23 no.. 3 o%

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y I l THE DRESSER FIELD SERVICE ORGANIZATION IS UNEQUALED. For prom Division, pt field service, please call Dresser Industrial Valve & Instrument Service Department, Alexandria, Louisiana. All hours. Area Code 318 445-5381. f Alexandria, La. 1 Boston, Mass. 2 Bridgeport, Conn. 3 Location of Service Men Chicago, Illinois 4 Tulsa, Oklahoma 5 Los Ange!es, Cal. 6 Baltimore, Md. 7 Columbus, Ohio 8 D m'l 0 L Lf c ) e.).P O P 90 T ~ 70 161 A . )] _ l. ' ~ ~ o _a

'} M e j. Sales Offices ALEXANDRIA, LA. 71301 e P. O. Box 1430 Tel. (318) 445-5381 e ATLANTA, GA. (Decotur, Go. 30030) 235 E. Ponce DeLeon Ave. Tel: (404) 377-5068 e CHICAGO, ILL (Downers Grove, Ill. 60515) 5202 Washington Street Tel: (312) 964-7373 e HOUSTON, TEX. 77036 5729 Savoy Lone Tel: 1713) 781-0545 e LOS ANCELES, CALIF. (Paramount, Calif. 90723) 7332 E. Adams St. Tel: (213) 636-1856 e STRATFORD, CONN. 06497 250 E. Main St. Tel: (203) 378-8281 internasional Operations e INTERNATIONAL HEADQUARTERS 245 Park Ave. New York, N. Y.10017 Tel: (212) 697-2800 ~~ e MANNING, MAXWELL & MOORE A.G. Backerstresse 9, 8004 Zurich, Switzerland e DRESSER EUROPE S.A. Dresser Manufacturing Division Western Road Bracknell, Berkshire, England in Canada e MANNING, MAXWELL & MOORE DIVISION Dresser Industries Conodo, Ltd. Golt, Ontario Field Advisory Service Dresser Industrial Volve and Instru-ment Division sales engineers are readily ovailable to assist in selecting the right types of ASHCROFT@ Gauges and instruments, CONSOLI-DATED @ ond HANCOCK@ Volves for your specific insto!!ation require-ments. The advisory service con be obtained promptly by contacting your authoriz-ed Dresser distributor or any of the sales offices listed above. 9 ' [} '

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c.;'"t h.f.'ll.4-8% (- -.=.%== _ i -- =b,~ 3.\\ l } "" \\. -~ ~' L = W-- - l ~ y'- r. . ~ s.. ~. - / ~ O- /y> h '~ twn> smu N e -~- u THE DRESSER FIELD SERVICE ORGANIZATION IS UNEQUALED. For prompt field service, please call Dresser Industrial Valve & Instrument Division, Service Department, Alexandria, Louisiana. All hours. Area Code 318 445-5381. f Alexandria, La. 1 Boston, Mass. 2 Bridgeport, Conn. 3 Location of Service Men Chicago, !!Iinois 4 Tulsa, Oklahoma 5 Los Angeles, Cal. 6 ~ j Baltimore, Md. 7 g ( Columbus, Ohio - 8 UEu 3 ) PI D 7@ q W u Ala jt 2 ~ 6 -.m

t down range for the ELECT?OMATIC@ VALVP. moves the main valve disc from its seat, permitting The action of the Bourdon Tube type pressure steam to escape from Chamber B to Outlet G. sensing element makes possible an extremely sensitive regulation. ~ TO PUT IN OPERATION The Type 1537 switchboard mounted control With the shut-off located below the main valve station, which includes lights and switches, is a in the closed position, and with the pressure on small unit that is mounted on the control panel the Bourdon Tube element held below the popping with electrical connections from the Type 1539 point, turn on the power and set control switch VX controller and to the salve. With the control to " Automatic" position. If the electrical system station switch on " Automatic", the green light is is alive, the green pilot ligi t will be illuminated. l lighted and remains on undl the valve is opened. SEE FIG. 4. Now set the control switch to " Manual" position, and observe whether the solenoid plunger goes to When the pressure reaches the predetermined the bottom of its stroke and opens the pilot valve point at which the valve is set to open, and contact about 3/32" to 1/8" maximum. The red and blue is made in the controller, the relay closes and a pilot lights should now be illuminated. Return the blue light comes on Almost instantly, the solenoid control switch to the " Automatic" position; and is energized, the valve opens, and a red light is if the pressure is below the popping point, the lighted to indicate that the valve, itself, is open. operating lever (24), Figure 5, will return to its When the pressure within the vessel drops and the original position, and the red and blue lights will valve closes, the red and blue lights go out. So off. If the pressure is above the popping point, r if the pressure was up to the popping point and When it is desirable to actuate the valve by has not fallen below the closing point, the red and hand it can be done simply by turning'the con-blue lights will stay on, and the lever will be held trol station switch to " Manual" and to close the down. Alllights should go off, and the lever would valve by turning the switch to "Off". When the return to its up' position if the power supply switch is on " Automatic", the valve will operate switch is opened. at the predetermined pressure for which it was scL The blue light is mainly a trouble shooting light. It is used to locate sources of equipment failures HOW THE VALVE OPERATES immediately. Steam under pressure enters the main valve When the control switch is set in the " Manual" through the inlet Chamber A, Figure 5 and passes upward around the disc guide-in Chamber B. . position and only the blue light and not the red Steam enters Chamber C through the clearance light is illuminated, the current is flowing through space between the main valve disc (2) and its the relays in the Type 1539 VX and VC Controller guide (5). The main valve dise (2) is held in the and up the solenoid mounted on the relief valve, closed position by steam pressure in Chamber C. but is not energizing the solenoid. The solenoid The pressure in Chamber C is the same as in should be checked. The only way the red light Chamber B when escape through Port D is pre. will illuminate is for the solenoid plunger to go to the bottom of its stroke and close the unimax vented by the closure of the pilot valve dise (13). switch. The pilot valve disc (13) is held in the closed position by pilot valve spring (15) and by the When the control switch is set in the " Manual" steam pressure in Chamber E. It is opened by the position and the blue light is not illuminated, the operating lever (24) under the action of the sole. relay and the Bourdon Tube pressure switch in noid plunger head (31). the controller should be checked for possible trouble. When the pilot valve is opened, steam is re-leased from Chamber D through Port F at a faster ADJUSTING THE SET PRESSURE rate than supplied through the clearance space AND THE BLOWDOWN between the main valve disc and the main valve disc guide. The resultant unbalance of pressures To adjust the Bourdon Tube for set pressure in Chambers B and C produces a force which and blowdown, refer to Figure 3. b )ht Is9 4

CONSOLIDATED ELECTR0MATIC REl.lEF VALVE GENERAL DESCRIPTION INSTALLAT!ON OF THE 3 RRIEF NE The CONSOLIDATED @ ELECTROMATICS RE. LIEF VALVE is an elsctrTc'allf.3Miti5te'd.'priiT5d The ELECTROMATICS RELIEF VALVE is ordi-felfe~fdeffed. Jt~miy'. b'eTbps~ rat ~ect1/ill.by_ closings narily installed on a manifold. To facilitate ser-

f~ switch'o'r?,inap'bs's'et thi.in'to'njunction'with y vicing, a shut-off valve should be installed directly

.frissEe3s'hsitive (elemenD 1Qelleve-Wsiire below the main valve, as shown in Figure 2. Mtica]Iy~jnd" accurately' within- _veg c!psy a Jimity. The application of this valve places at the Emphas,s should be placed on preventing i coInmand of the plant operator a means of in. mechanical strains from the discharge piping stantaneously opening and closing a relief valve being transmitted to the ELECTROMATICS RE-on some remote header. LIEF VALVE. Such strains are detrimental to good valve perform mce. The discharge pipes should With the pressure element set to open the have adequate steam capacity and should be of ELECTROMATIC@ RELEP VALVE nulomatically a size to provide for movement caused by ther. at a pressure slightly below the lowest set spring mal expansions. loaded safety valve, it will effectively prevent the safety valves from lifting except on major over. MOUNTING CONTROLLER TO pressures. REDUCE VlBRATION Figure l' illustrates diagrammatically the rela. Care must be taken in mounting the controller. tionship of the various elements of the ELECTRO. The controller will not operate properly if sub-MATIC@ RELEP VALVE system. The Type 1539 jected to vibration. It is recommended that the VX controller consists of a pressure sensitive ele-controller be mounted directly to the building ment composed of a Bourdon Tube which actuates structure. Depending on the installation, it may electrical contacts, and a heavy duty relay to even be advisable to mount the controller on some switch the solenoid load. The Type 1537 control type of shock absorbing material to isolate it from station is equipped with a three-position (Manual, any vibration in the building structure. Since the .Off, and Automatic) switch and with three indicat. sensing line from the pressure vessel may also ing pilot lights (red, blue and green). The pressQre transmit vibration to the controller, precautions 9v element and the relay working in conjunction with should be taken to eliminate this possibility. Flex. O k the contrcl station supply electrical power to the ible hose connections is suggested. When control-solenoid assembly which operates a pilot valve. I r is sulIjected to freezing temperatures heater The pilot valve in turn controls the opening and element should be added to prevent freezing of closing of the main valve. Bourdon Tube. Controllers can be furnished for 110 and 220 FUNCTION OF THE ELECTRICAL SYSTEM volts 50 and 60 cycle AC and 120 and 240 volt DC operation. For higher than 2a.0 volt 60 cycle The Type 1539 VX is actuated by the pressure AC, an independently mounted transformer may in any vessel to which it is connected. The con-be used to reduce the voltage to 110 volt 60 cycle struction of the controller is such that it will make AC in order to operate the standard controller. and break electrical contact with afdiffe' Fence;,iny However, the full primary voltage of the trans. pIpsule.lfil_psgent 6 fib ~~sqth,s3.~Within e 5 former can be applied to the solenoid which the controller, Figure 3 is tThDual Control Pres-is mounted on the ELECTROMATIC@ RELEF sure Switch. Adjusting screws A and B, determine - VALVE. the operating point of each switch. When the pressure increases to the set point, the high When DC is used, a resistor unit is built into pressure switch C is actuated and completes the the solenoid assembly for the purpose of reducing relay circuit that energizes the valve solenoid. the current when the solenoid is in its holding The low pressure switch D provides for relay con-position. Electrical characteristics of the AC sole-trol below the actuation value of the high pres-noid make the resistor unit unnecessary. 3 g qure switch, thereby allowing an adjustable blow-s C m y y m D .Di il m m_

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j The low pressure switch Indicating light should Remove the upper spindle (20), then raise the be utilized in adjusting the blowdown. As the bellows flange (19C), bellows (19A) and bellows system pressure is increased, the light will come piston (198) as an assembly out of the valve body. on, Indicating actuation of the low pressure switch. Since the low pressure switch controls the closing Remove the pilot seat bushing (16), then the pressure of the valve, the closing pressure of the lower spindle (14), disc (13) and disc spring (15). valve is known before the valve pops. For repairs follow the procedures as described The set pressure of the valve may be determined on Page 9. without actually popping the valve by placing a heavy piece of cardboard or similar insulator be. DISASSEMBLY OF PILOT VALVE tween the righthand relay contact points. When WITHOUT BELLOWS (Figure SA) the set pressure is reached, the relay contacts will snap closed. Remove the pilot valve cover (28). Remove the four bracket stud nuts (22) and lift the complete Screw A is used to adjust the set pressure. By solenoid bracket assembly from the pilot valve. turning Screw A counter clockwise, set pressure 7 will be increased. By turning it clockwise, set Pilot p!Mie (35), dise (13), and guide (34) can i pressure will be decreased. now be removed by using two 1/4-20 screws in the threaded holes provided in the top of the bushing Screw B is used to adjust the length of blow-(25) to jack the guide out of position if necessary. down. By turning Screw B counter clockwise the .4 blowdown will be shortened and by turning it i clodavise, the blowdown will be increased. DISASSEMBLY OF MAIN VALVE (See Fig. 5) Rem ve nuts and bolts from outlet flange. The EXAMPLE: With the valve set at a pressure of utlet flange can now be removed from valve 2000 PSI, the set pressure can be increasei to body. 2020 by turning Screw A counter clockwise. To reduce the pressure to 1980, Scraw A must be Remove all of the inlet flange bolts and nuts turned clockwise. and remove valve from boiler flange. TO DISASSEMBLE VALVE r:OR INSPECTION Invert valve body Mth inlet flange upward and remove sealing wire frcm locking screws (8 & 10) Refer to Figure 5, sectional view of main valve located in the disc retainer (6). and pilot valie. Take steam pressure off the main valve before loosening any of the parts. To make ' Remove the two locking screws 02 & 10) and certain that no steam pressure remains in the with the use of tool in fig. SB, rotatt retainer (S) valve, depress the operating lever (24) fully. The counter clockwise until threads disengage. Now re-ouMr end of this lever should move dowa appron. move retainer, Flexitallic gasket (7) and spring (4). imately 1/2". If resistance to the downward mo-tion of the lever is felt, in all probability there is The main valve disc with its piston ring (3) can steam under pressure holding the pilot valve disc be lifted out with the aid of a threaded handle (13) against its seat. This must be eliminated be-screwed into the center of the disc. Q fore proceeding by holding the operating lever .M (24) fully depressed' until steam no longer flows After lifting out disc remove the piston ring (3). 3 from the pilot valve outleL Remove guide (5) using penetrating oil if neces- -? sary. Guide has no threads and can be lifted out. g w DISASSEMBLY OF PILOT VALVE Clean guide and mating surfaces in valve body, 3 WITH BELLOWS (Figure 5) then install guide making sure guide is free to Y Remove the pilot valve cover (28). Remove the rotate. y four bracket stud nuts (22) and lift the complete ,d solenoid bracket assembly from the pilot valve. MAKING REPAIRS TO SEATS (Lapping and Grinding)_ After removing the complete solenoid bracket assembly, the following procedure must be fol- 'If the seating surfaces are not badly damaged, 3 lowed. they can be conveniently and readily restored by ,q 6 7 3 y p- \\ bl 3 3y 7

lapping. A 45' lap with suitable handle is illus-First, clean bushing seat and disc seat with a trated in Figure 6 for the main valve seat bushing. clean cloth and then " spot-in" the disc to the bush-Fine-grained cast iron is excellent material from ing with light reciprocating motions for one see-which to make the laps. The working surface (A) ond. Remove disc and check bushing seat for con-should be accurately and smoothly machined at tact which will be a thin unbroken pencil line an angle of 45' and truly concentric with the completely around the bushing seat midway in the guiding surface (B). Figs. 6 A and 10-A.;how seat width. Grind in disc to bushing seat. Usi:.g finer The word " lapping" is used to designate the abrasives as the work progresses causes thc seat truing of seats by means of a lap. When the valve to become smoother and broader. Grinding-in c se is used instead of the lap, trade uscge dis-should be stopped when a seat is produced as tinguishes the process as " grinding." illustrated in Figure 7. Manipulate the lap with a reciprocating totic t The seating contact can be driven in or out by through a small angle, being careful not to beac carefully placing the compound very sparingly on sideways on the handle, for by so doing the seat the side where removal of metal is desired, just may become out-of-round. Replenish the lapping as in the use of the lap. compound frequently and " spot-in" occasionally The shaded section of Figure 7 represents the to determine the progress. desired seat contact shown rotated into the plane " Spotting-in" consists of wiping off all the com-of the paper for illustrating purposes. Intimate pound, barely moistening the surface of the lap metal to-metal contact should occur over approxi-with machine oil, and rubbing the surfaces is in mately one-third of the width of the seat shown lapping. A slight polishing takes place revealing as A. From this intimate contact, the seat should the location of the actus1 metal-to-metal contact. blend evenly up and down. Seat contact can be If the contact is too high or too loiv, it can be readily brought out to a brilliant polish by using shifted by applying, sparingly, the lapping com-a small quantity of C-5 colloidal compund after pound on the side requiring further terroval of first wiping the surfaces entirely clean. metal Avoid over-grinding as it may cause the seating If the seats are already bright before " spotting-contact to get out of control; i c., to shift from one in", they should first.be given a matte, or dull, position to another against corrective efforts. finish by lapping briefly with a compound having Lapping compounds for this purpose are classi-a grain of about 320. After dulling the finish, wipe ficd as follows: off all traces of the compound and " spot-in" as previously described. Lapping and Grinding Materials If the seats become stringy (grooved), use a p.,, n o, c,,,, o.,,,,,,,,, redressed lap and apply a compound having a 199 2 coarse 220 grain, grease mixture' grain of about 1000. Lap a few strokes, and if the w id cza lap does not vibrate or bounce, wipe the lap dry. 199,3 medium soo grain grease mixture, but leave the compound on the bushing and try % th.can again, repeating if necessary until bouncing takes 1s u rice ato grain grease mixture, place. Bouncing has the effect of knocking down the ridges of the stringiness and at the same time It44 Po!!shing Co!!aldal compound, C,5 3 ' * * " producing a cross-wise lapping movement. 179-12 Very One 1000 grain grease mixture, 2 oz. can Progress may be hastened by adding, after bouncing has begun, a very small quantity of com-Compound 199-2 is recommended for rapidly pound containing a grain of about 500. removing deep grooves, pits, dents, and the like. Having completed the lapping of the bushing Compounds 199-3 and 190-4 are used for gen-seat, proceed to grind in the disc. eral smoothing of the seats. Instr 11 grinding handle, Fig.13, into disc by Compound 199-12 is a soft grit, slow cutting turning clockwise until grinding handle is tightly material having the quality of producing smooth made up in disc then proceed as follows: seats with good blend and without stringiness. n 1bU ]e, 7

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_]a While 199-6 colloidal compound is not regarded seat angle as shown in Fig. 9 dimension 498 must ] as a lapping or grinding-in material, it is useful also be restored. r in bringing out the exact location of the metal-to-metal contact as previously explained. It has ex. To assemble disc and stem, insert stem in disc j d cellent anti-galling qualities permitting inti.nate and tap end of stem lightly until stem radius seats metal contact while polishing without danger of in disc. damaging the seats. REMACHINING SEAT BUSHING i While the finer points of lapping and grinding-in TO MAIN VALVE I i may be considered as a mechanical art, it is not beyond the ability of a good mechanic with some Set up the body in a boring mill as shown in experience and practice to produce good results. Figure 14 and indicate surfaces C and D. The work No effort has been made here to establish an may not run out more than.002. It is also well to exact procedure to cover each and every case be. check the bore of the seat bushing for run out, s cause different persons get different results ac. (Bushing material is Stellite 6B). cording to their own technique. Having trued up the work, take light cuts across The procedure of reconditioning the seats of the seat (B) until all damaged areas are removed the pilot valve is much the same as for the main and turn to the smoothest possible finish. The seat valve. See Figures 9 and 10 for lapping and ma-angle is 45*. Next cut back the face (F) until the chinmg dimensions and then proceed to follow the depth (G) or width (H), whichever is more conven-same rules as for the main valve. ient to measure, is in accordance with Table I. C TABLE 1 REMACHINING OF DISCS AND BUSHINGS Bore Diameter seat Deptre (G) seat Width (H) When the seating surfaces have been damaged (std. Full Bore) of Figure 14 of Figure 14 , f to the extent that they cannot be restored prac-1.s2s .187 plus. coa .:ss plus. coo tically by lappi6g, the following procedures are u12 nunus.004 mirus.004 recommended for remachining. REMACHINING PILOT VALVE BUSHING MAIN VALVE DISC The procedure for machim. g the Stellited pilot n Chuck the disc, using copper to protect the valve bushing is much the same as the machining '3 finish and true up accurately at A & B with a dial of the main bushing. See Figure 15 for machining 1; indicator (Fig.12). Machine disc to dhnensions dimensions. shown. t ASSEMBLY MAIN VALVE [ PILOT VALVE DISC When the seats are touched up and other main-j ,The pilot valve lower spindle can be removed term rompleted, the main valve should be re-i from the disc by holding the lower spindle in vise au N1el as follows: (See Fig. S) j jaws protected with copper and gripping the 210ce guide in base, making sure it is prop-7 square boss of the disc with a pair of pliers. 3rly scated and free to rotate. ] Tap the pliers with a small hammer in the di-B. Ldall piston ring on disc and place disc and i rection shown (Fig. II). piston @s into guide (guide should be re-A moved i. n base for this operation). Place 5 guide, di ' oiston ring as an assembly MACHINING PILOT DISC into val.. Le ' rr gently until disc Chuck the disc, using copper or other soft metal and guide are 1 of. i j per Fig. 9 to protect the disc finish, and true up C. Place disc spig into disc. i accurately with a dial indicater. A D. Place flexitallic gasket in2o recess of disc J Having trued the work, take light cuts across ' retainer and screw retainer clockwise until g seat until all damaged areas are removed. The it is firmly made up in base. fg 8 p C) ,5,> \\< }k d

e E. Replace two locking screws and secure with ASSEMBLY OF PILOT VALVE sealing wire. WITHOUT BELLOWS Place stem and disc into pilot valve bushing ASSEMBLY OF PILOT VALVE WITH BELLOWS and lower into base being careful to seat bushing Place the disc spring on the back side of the Properly on flexitallic gasket in pilot base. disc. It should fit securely on the disc boss. Install pilot spring and spring cover over stem, Place disc and spring into the pilot body. depress spring cover, and install pin. Install new lower bushing gasket and upper Replace the complete solenoid, bracket assembly bushing gaskets on bushing and lower bushing ver the pilot valve studs. Into pilot body engaging lower spindle. Pull the stud nuts down evenly until tightly Lower the bellows flange, bellows and bellows made up. piston as an assembly into pilot bushing, then re. In reassemblying either pilot valve, the operat-Place the upper spindle. Ing lever should be adjusted so that the total Replace the complete solenoid, bracket assembly travel of the pilot valve stem is equal to the clear-over the pilot valve studs. ance plus 1/8" nominal. The clearance is approxi-mately 1/64". Pull the stud nuts down evenly until tightly made up. e e. W

i j MAINTENANCE. EQUIPMENT RECOMMENDED TOOLS and Flexitallic gaskets (Items 7,17 and 18. Figure

5) be carried "on hand in the following quan-TOOLS FOR 31533VX titles:

Part Part No. Main Valve Lap 0015420 (a) For not more than two valves-one main Pilot Valve Lap 1232701 valve disc, one pilot valve disc, two Flex-Lap Assembly for Pilot Disc 4072901 Itallic disc retainer gaskets, and two pilot Grinding Handle for Main Valve 81744 bushing gaskets. I Dise Retainer Persuading Tool 4073401 (b) For more than two valves-two main valve discs, two pilot valve discs, four disc re-RECOMMENDED SPARE PARTS tainer gaskets and four pilot bushing gas-For convenience'in maintenance, it is recom. kets for 50 per cent of total number of mended that spare valve discs, pilot valve dises, valves. MINIMUM BLOWDOWN SETTING 1, The Type 1539 VC Controller, as designed with ELECTROMATIC@ VALVE inlet. From Figure 16, a pressure sensing element, is capable of being the minimum blowdown setting can be determined adjusted to an extremely short differential or when the ELECTROMATIC@ RELIEF VALVE ca-blowdown setting. It is not always possible in pacity, as expressed in percentage of the total actual installation to take full advantage of this boiler capacity, and the superheater pressure drop, short blowdown adjustment if the pressure con-as expressed in percentage of the superheater out-nection to the sensing element is connected to the let pressure, are known. supcrheater outlet header. When the valve opens, -l 7, the additional steam flows through the super. The example given on Figure 16, shows the heater causes an additional pressure drop; and if ELECTROMATIC@ RELIEF VALVE capacity over this additional pressure drop under any load con-the total boiler capacity as 20 per cent and the ditions exceeds the blowdown setting of the valve, superheater pressure drop to the superheater out-the valve will chatter. Therefore, it is absolutely let pressure as 6 per cent. By following the dotted essential that the pressure connection from the lines, the minimum blowdown is found to be 2.36 header be at least 8-10 pipe diameters from the per cent. 8$ ??.- WIRING DIAGRAMS R n REFER TO FIGURES 17 THROUGH 23 E .}: FOR ELECTRICAL DIAGRAMS.

.g

&: w& - tW ~ .M .-5 I. n ,y ~

EVLAV ) E CI T I T A A G ME 0 @~ OV 0 RL 9 T A C V 7 EF + L E El l XE V.R \\ 33 r S ia i / f,; t J B M M E E D T L S S a O Y SA F S I D V N E l L 0 A A V N V E + M L L T A O Y V O L L S I P F P PU E I 1 E S L E V E E RL L R R R uE A E U SS V N W C G o SS T O O I I I EE S T P T F T RV E A A E e T T CI M V a S L R O N L T R "A O C T V IA R E C R T L E FF D N E L O O E T C U D 7 E H 3 S 5 TA 1 R D N I EL O L L H O 8 S O P s I O N R S O T /O 0g C NO C O 8 X + e V 8 { 935 1 swi -,, N a.a i i' l jn9s

4 i

Es e i f e 6 u E ' fTrn rTR1 4 O L-I g '. ~ [f*> < r a w <_ > ) ELECMOMATIC@ VALVE AND SHUT-CFF VALVE FIGURE 2 \\ 12 }[) f [i 7 J.- a

JtFibre wwv qu wr u wmmmetMrsitWEME7;M;trmatJN.3attash .i ,,-.-,..,.ra%,..-,,___,_...; --- - q 7 T"am wesa m sma r:1 uwww.w I 9 "L* 5L.8 8 R &LB NIL Ml@ B MKK5 l R@G 4 3 Le Li t> 2 G S i )J [ ]a'Ig I@i ]_Q ,S 16 (, .) .g, u j s L re WO) M ,y$p[ l r3 f 3 J. ?' 0 fcIP] O y k, h I f j r ,g ' (- .) N E N M 4 3;D y, Adj Y fg b

3 b

[) A F ,' c to 9 1 d - kai JP)~f!!PM; ~ j / k " m m n> LN uw bn+mmr.semA.h6[L'Bimn m maxmsnr m Y. [ d. B' NA DUAL CONTROL PRES $URE SWITCH FIGURE 3 4 J:"

2 a, 31533VX & 31533VX-30 Ref. No. Nomenclature IA Lower Base IB Top Flange IC Cage i 1D Tube Insert 2 Disc 3 Pistort Ring 4 Disc Spring i ~ 5 Guide 6 Guide Retaining Plug '.i 7 Guide Gasket ~ 8 Lock Screw .a 9 Lock Screw Lockwasher 10 Retaining Lock Screw 11 Retnining Screw Lockwasher 12 Pilot Base T 13 Pilot Disc 14 Lower Spindle 15 Pilot Disc Spring 16 Pilot Seat f,shing 17 Seat Bushing Giaket 18 Upper Seat Bushing Gaskets 19A Bellows 19B Bellows Piston 19C Bellows Flange 20 Upper Spindle 21 Solenoid Bracket 22 Bracket Studs 23 Stud Nuts 24 Lever 25 Lever Pin 26 Adjusting Screw 27 Adj. Screw Nut 28 Bracket Cover 31 Solenoid Plunger Head 32 Pilot Spring 33 Spring Cover 34 Pilot Guide 35 Pilot Spindle 36 Solenoid Cover ',l 0. 3 ^ 14

28 s ,Y,f r 26 N ,,\\\\ 3,, s 2 d 21 \\ bt,% 3 e u M',4 EI Y Y 24 or ~ U Io le 22-y ISC q! \\ 5 yyn I90 IB MWM I6 I h 2 1% n B g g3 %'l 4 ~ i j x l: ( 6p5;cw__ e x,E A-f; l.af ** usn e.k *" dQ M ),,b-QV'p* q 3/ e NTic@ 3:333VX-30 VA!.VE WITH 8%g FIGURE 5 OO Q

• O d'

_pq3 p. \\ l, . o n-o _@_1 n o w

p) q' bhh ") [ 'h 9 k DIA 2 HOLES p-s 2s 9- _ i N 30 26 N '( Ss g' n~ - O ~,, + c ~ c u, m ~ 2I "- \\ { y--*- - -lf DI A. O C dg 889/ " k I ' p 4s - f% 2 5 -- --- I 4 i \\ . - 24 ++ 8 h b 2 32 i T 3 1 O ~ 34 ,r M N s I s' i ss N 35 ' k'd' ' $ 'I b b,, 5h /5 0 t '1 i ~ W, f ~~ IC j r, ,, j j N fN 4 u y a -lOlA HOLE a %- }A' [ g' r 10 ~~ ~~ L L - Jg \\ {E j2 asoj 4 x o b\\'h:'g'q-11 } 8~. l A -" / ~ 2.7250.A.y* in rx A ELECTROMATIC@ 31533VX VALVE WITHOUT BELLOWS GUIDE RETAINING PLUG PERSUADING TOOL FIGURE 5A FIGURE SB J -A 9

i i i \\ Wdi tN ' ' ' s '. N-Nouet 8J % stat LA9 Aj aAst ( gx y MAIN VALVE LAP IN POSITION , IN MAIN VALVE FIGURE 6 y 6 l 1.575 -=- DIA. ' 000

• M.251 +0010lA.+

MAIN VALVE LAP (p rp FIGURE 6A J d c) JU '{ b. b m g

PtLOT OtSC g + Disc I Base ) g;9 p; k L.) f FIGURE 8 - LAP ASSEMELY FOR PILOT DISC FIGURE 7 - SF,AT CONTACT AND LOCATIOtt ~ I 1 '\\ s q \\ N \\ seat tap s gC [_ __ / o bs s / B / .\\ e '/s ~~ .498 OfA L DISC i SOFT METAL y [ CHUCK JAWS V V6se FIGURE 9 - 1.ATHE SET 1JP FOR TURNING N PILOT VALVE DISC \\ k Pilot Valve pp "I O PILOT LAP IN PLACE IN J g g 11 PILOT BUSHING i) FIGURE 10 O '~D] ' Q y'~ a JO _5] _1 Lh is

\\ N DISC h I-1/4 5 U l LOWER SPINDLE l-3/8 SOFT METAL ISE If ( o %) .450 + l DIA. + 1. 003 )h-am-DIA. REMOVAL OF PILOT VALVE STEM FROM OtSC PILOT LAP FIGURE 11 FIGURE 10A D 4 / 5 I w 45{* O m VALVE C D MACHINING DIMENSIONS 1533VX 1.825 1.628 MAIN VALVE DISC 31533VX 1.500 1.325 FIGURE 12 28 \\@ ,LL

..l,..,...._________________.________y__ I - - bi _ _j.'J__..____________________._L. '"'I .4tL --- }l GRINCING HANDLE FOR 31533VX VALVE I FIGURE 13 k ' 5_ d ' I / sASE 1,_ s N N ' [ b' LOC 1 NUT g !j -f~ TOE CL AniP O w r-- l 1 \\_ BORING MILf. SET.UP AND MACHINING CIMENSIONS FOR MAIN VALVE FIGURE 14 g Chuck laws Soft Metal Pilot Valve Seat Bushing ]9//////s %*E i i O _5B8 0l A. D C7 0 t %) m n / / (( ff CQ-i / 9mW T 450 tl 'id f W D bO d v a // / / SET.UP AND PAACHtNING OfMENSIONS FOR PILOT BUSHING gi lk> FIGURE 15 20

f*f I i e-a e l'M a 1 i i i 3 h i i i N i

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A m F o t t M b=4 I \\I j l f 7*. n.' 9O l t iA h h [ = i 6 i -E y C pd i t .,,, r m w 1 i-N. 9 67 c s,,. m n, i r I i.L { \\(

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i C D a C1, D 21 od3 o s o'D)lO,, I; I h } O .]

= VOLT 4GE AS RE01' IRE 0 = IL' IHRU 440 AC L ts = LINE SWITCH 2 cs = CONTROL SWITCH FUSE OR circuli ~ a RELAY CONTACTS C ONE ut 3PERATINC SOLEN 010 LsSi (5) $ $ = RED CREEN, & BLUE INDICATOR LAWPS Ls C = RESISTOR INCORPORATED WifH LAMP r M = 5000 Onu 10 nit flRE WOUND RESISTOR UNI - st h [O uni-ss. = UNI MAX SWITCH WOUNTED. ON 30LEN010 0 0 rsu = PRESSURE SWITCH, HlCH SET I '3 cs g L

PRESSURE SWlTCH, LOW SET

&,M -A NOTE: NUWBERS AND LETTERS ENCIRCLED cs s SHOW TERWINALS OF CONTROLLER. CONTACTS MAN. OFF AUTO g es, L, cs i x 2 b N O c s !I$ C' cs L cs 3 2 4 g' _t: 4 x en CONTACT DEVELOPlJENT

g. [3 f g

es, C8 i 2 -l! >-{}-- 8 i s x \\ LOW PRESSUAE "3 SWITCH INDICAilHG LIGHT l > SCHEMATIC WlRING DIAGRAM FOR 1539VX OR 1539VC CONTROLLER AND 1537 j CONTROL STATION FOR CONSOLIDATED @ TYPE ELECTROMATIC@ RELIEF VALVE .A LM FIGURE 17

s' O ml c S I - E G R ) A E 5 T M L A i a L L R MO O 8 D M"s G AV R A R T GC N I D AU O A@ DL n I C i os i G v lS C N GAT V IR N L 9 RO 3 I I W ROV 5 F I 1 a W 0 L A E5 CL2 N R B X I m E c TAH V T ACG 9 N MIU 3 I ELO 5 HPR 1 cpl \\' SAT i ,~ s' l t G 4 H l T A EC RI UD SN SI E RH 6 3 2 1 PCT B TH L M M M 1 WIG R R R R 8 OWI E E E E 1 LSL T T T T E LI I RUG F N Y 3,,R A n L c_ li E .E' M. n f' _ e 1 J 2 H d C .j I 1 ET N/ RI UW SS g 3' HS GET L Tn" RE P I HPS 4 .E c. f L l I a n R dE n T N .A_ - = a -, O ac D-5 L R-s Fi A L 9j E' M O .E o. R T Y B 2 N n E O T L M A .5 H M N C O C i c. li' 8 ET I i i M RI n R UW = n E SS ny .i T S WET D ORE El LPS . n o. 8' n ?..

1. y r-c

TYPE 1537 CONTR S1ATION INTERNAL CONTACT DEVELOPMElli WIRlilG (TOP VIEW 0F SELECTOR Cf1HTACTS WAM. 0FF 1010' N* \\ TYPE 1539VX OR 1530VC CONTR0lER b' :: 'E Ik h \\ x L C 'E M 3 I ,\\ _y l7777y4bd I, 7 I i ,,,,,,,,,ty, I A[ I I VALVE 8 VALVE OPEN CLOSED L12 %vp WAN. AUIO. \\ C5 4 2 i 7 b I cs3 cs, g i 3 ^ i i FRONT VIEW TYPE 1537 C0llTROL STATION ~ L ~N -o L -*4 EXTERNAL WlRING DIAGRAM FOR CONSOLIDATED @ f TYPE ELECTROMATIC@ RELIEF VALVE SEE NANEPLATE FOR 9 WITH 1539VX OR 1539VC CONTROLLER uni sw. ELECTRIC DATA. S I J l AND 1537 CONTROL STATION DI AGRAtt APPLICABLE FOR ALL 1 -? " I w DC, VOLTAGES THROUGH 250 V01TS. } ~ J O t y ELECTROMATIC@ RELIEF VALVE,

• J ' 8

FIGURE 19 w f'

I VQ W~Cr-JM VOLTAGE AS REQUIRED = = ts LINE SWITCH THRU 250 DC Li L0 cs = CONTROL SWITCH 3 FUSE OR circuli - J a = RELAY BREAKER (SUPPLIED ca. RELAY CONTACTS BY CUSTOWER). us. OPERATING SOLEN 010 \\Ls ts\\ g g g RED, GREEN, & BLUE INDICATOR LAMPS I uni-sp.= UNI WAX SWITCH NOUNTED UN 50LEN010 NJ-J W. C.0. ss.: CUT-0UT SWlTCH (NOT REQUIRED FOR AC) Ps, PRESSURE SWITCH, HICH SET g .o = PRES $URE SWITCH, LOW SET csi i es t M = RESl$ TOR INCORPORATED WITH L AMP cs [1ITl = 5000 cau 10 vut WIRE WOUNO RESISTOR 3 h M = RELAY RESISTOR NOTE: NUNbERS AND LETTERS EdCIRCLED I SHOW TERMINALS OF CONTROLLER @d f-c e CR '3 di e es CONTACT DEVELOPEldENT L en ,t b b CONTACTS MAN. OFF. AUTO es, cs, E) -J. O C5: L es i 2 1 X qp 6l) ~<[*$ ud OHi 6 iF-o 5 2 x 2 L C5 6 ) cs 2 4 3 C il E lQ 3 X g'LOWPRESSURE r. = i "8 SWITCH INDICATING 4 X lt-4 ' d LIGHT h SCHEMATIC WIRING DIAGRAM FOR 1539VX b-OR 1539VC CONTROLLER AND 1537 I d CONTROL STATION FOR CONSOLIDATED @ o TYPE ELECTROMATIC@ RELIEF VALVE c.o. ss. D* ,J ] FIGURE 20

CONTACTS WAN. OFF AUTO TYPE.1537 CONTROL STAT 10tl INTERNAL cs, t, cs i I' TOP VIEW 0F SELECTOR TYPE 1539VX OR 1539VC CONTROLLER Cl c o 3 / _\\. ess L2 cs4 4 x j g CONTACT DEVELOPlJEtli lf/!,4$.A'$2eT4hdl ~ io o e i i '( "'" I""' l2 'ayg5[ c'tys'go E _/ L12 %iP MAN. AUi0. cs4 l 3 w l cs3 cs, 3 i i g FRONT VIEW TYPE 1537 CONTROL STAT 10ti L i ~N -o '2 EXTERNAL WIRING DIAGRAM FOR CONSOLIDATED @ TYPE ELECTROMATIC@ RELIEF VALVE -o SEE ilA!JEPLATE FOR 0 WITH 1539VX OR 1539VC CONTROLLER UNI-sf. l AND 1537 CONTROL STATION , ELECTRIC DATA. s DI AGRAIA APPL ICABLE FOR ALL 8 :. 2 'AC V0LTAGES THROUGil 440 V0LTS. J,, j i-ELECTROMATIC@ RELIEF VALVE.-*- s ~~ FIGURE 21 CC I

U TERM,1NAL BOARD ,s a, s \\ li g l y )' b b l b l ty og u, e 's 's f 0 p-l M E LOW H f 3' PRESSURE PRESSURE SET SWITCil,#2 SET SWITCil,#1 LOW PRESSURE a SWITCH INDICATING 'h h L IGilT - COWHON PL unitt snown -- TERL1 6 SCHEMATIC WIRING DI AGRAM l l l 1 0 L N [ ' w TERM 3 m, a N l l /i " TERM 2 i UA - 'n__N ..(RELAY " c- "A " c "gu, - TERM i l e TERM 5 " ~- TERM 4 I 1539VX & 1539VC CONTROLLER ~ ", INTERNAL WIRING DI ACRAM ?,' J CD FIGURE 22 e t

1. 8 0 e

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't j ,,.j, y N SE E-d CONS DERED TME TOP corL.

=

h SOLEN 0fD SMown W1TM TERhlMAL 04 LE AD SMumf COIL e NORMALLY g* -"t"" CLOSED CUTOUT SutTCH. (AS wtmED FOR DM g,, N FIGURE 23 - D.C. SOLENCIO FOR 31533VX VALVE D D k h r r g \\: l m> \\_a _u_ Lk 7, f) 28

H O 5 5 5 5 5 A T S D 5 5 5 5 5 0 5 TN E G N R I R D 6 2 0 2 0 L 4 4 4 2 2 U O C H T C E IR D S G N H" S 8 0 6 0 0 I U R 6 5 3 3 2 T H 2 2 2 1 1 I A R ST 0 0 5 0 0 L 1 2 2 3 5 O 1 1 1 V 2 2 E . G N Oo N A g 0 0 0 0 0 i 0 0 0 0 3 3 2 2 2 3 3 2 2 R g 8 E P D E I D M L E I 0 0 0 0 0 L og C 3 3 2 2 2 C 0 0 0 0 YC Y 3 3 2 2 0 A 5 C O 0 S 6 0 5 G T N G T N I 5 9 2 0 G N IN D 4 0 7 6 E L 6 5 3 3 1 E LD 3 0 6 4 R O R R O 5 4 2 2 H U R H C U C G N G N I T I A N. T R. A N E T _ R L. ET 'j A A L H H 4 0 7 3 0 S 5 5 5 2 U R 0 5 5 2 U 9 1 1 1 N R 8 7 4 I N 8 4 4 I l l .Ii ll S >I._. i T 0 0 0 0 0 T 0 0 0 0 S L 1 2 2 4 4 L _ O 1 1 1 2 2 . V 2 2 4 O 4 1 1 V 2 2 e m* i. if l l't' y cD

h..a Replacement Parts Dresser-Industrial Valve & Instrument Division, maintains the largest fic!d service staff in the When it becomes necessary to order replace-industry. Service Engineers are located at strategic ment parts, the order should state: points throughout the United States to respond to

1. Part name customers' requirements for service. Each Service l

2. Valve size Engineer is factory trained and long experienced j

3. Valve type in servicing Safety Valves. Our Service Engineers

4. Serial number of valve restore disc and nozzle critical dimensions which affect valve performance, and are capable of mod.

Refer to F1gure 3, Section I, for part name. All ernizing va res in the field. other required infonnation will be found stamped on the nameplate attached to the body of the V81V8-FACTORY REPAIR FACILITIES If boiler downtime permits, it may be desirable ~ mis.P M. Udo t d o wh to return the valves to the factory for repair or c(.ru. w.eJ:Un w t 7 533Q3 modernizing. The factory at Alexandria, Louisiana ~a maintains mmplete CONSOLIDATED @ re g g -5/16_pMJ center. In addition to factory production stocic, pair ~- the 20s300 8o-23514 repair center utilizes its own stock room. Most 2050 f 639 important, this enables the factory to make return s e ;r shipment of repaired valves within forty-eight (48) ~ -.-m

ageg i

rMuswto T' M hours after ric@'. of customer's purchase order.

f-2500 b N 665 f+f,';";&g8[I /Es '~ Each valve is tested and adjusted on CONSOLI. Sg.u.,. m m _, s., ch DATED @ 2500# steam test boiler. Final testing r SMS ', ..E. ; We is witnessed by quality control inspection as being properly set and adjusted in accordance with the SAFETY VALVE NAMEPLATE ASME Power Boiler Code. FIELD SERVICE SERVICE WARRANTY Utilitias expect and demand service on a mo-ment's notice. Should it become necessary, utill-Both factory and field repaired valves carry a ties can depend on CONSOLIDATED 3 Field Ser-warranty, which covers workmanship and new vice, even on extreme off hour emergency situa-parts installed during repair, for a period of one tions. year from date of repair completion. D 0 oo. D 6JL_SJ_I[nb 30 ' t '_' )9) i O

l OUTLET FLANGE ROUND TOROUE IN FT. LBS. I 2 O O 2 SO 3 90 'O O' A i20 5 160 ~ ~~ PROCEDURE 5O O.4 I REFER TO TABLE ABOVE FOR T6 ROUE FT LB. VALUE FOR APPLICABLE ROUND

2. TOROUE EACH HUT IN SEQUENCE SHCWN IN FIGURE I TO APPLICA8LE TORQUE FT LB.

,VALUE. l 8

3. PROCEED WITH NEIT ROJHO IN ACCORDANCE WITH STEPS I & 2 '

7 IHLET FIGURE I ~ . SEQUENCE FOR TOROUE APPLICATION TO QUTLET NUTS NOTE NUMBER STUD 30,000 PSI STRESS FLANCE TW OF STUDS THREAD FT/LDS. TaarlyE TORQUE VALUES ARE PURELY 4-600s 8 7 8 - 9UNC 160 THAT VALUE REQUIRE 0 70 R4XE A TIGHT FLANGE JOINT. NO CONSICERAT10N HAS BEEN GIVEN TO LOADING WFilCH MAY BE REQUIRED TO ALIGH PIPING OR ACCOMODATE THERNAL PIPING STRAINS t TOROUE VALUES APPLY ONLY TO SPIRAL NOUNO CASKETS WITH WETAL TO METAL JOINT CO.4 TACT. 7 d ], )9 D PR 0 OUTLET FLANCE BOLilNG CHAili 31533YI ELECsROMATIC o r-D f VALVES ASME SECTION III ~ O- - b,. b 008. BY: WM / CK'0. BY: Ed8 / DATE: 5 11 72 ,p -

i I' !NLET FLANGE ROUND TOROUE IN FT. LS$ y O O 2 120 3 3 190 O Os A 2TO 5 355 PROCEDURE ~ O OA i RErER 10 taste AsovE roR ToaouE ri LB VALUE FOR APPLICA3LE ROUND

2. TOROUE EACH NUT IN SEQUENCE SHCWN I4 Q

Q FIGURE I TO APPLICASLE TORCUE FT LB i 1 VALUE. 8 i

3. PROCEE0 WITH NEIT ROUND IN ACCORDANCE WITH STEPS I & 2.

DUTLET w FICURE I t SEQUENCE FOR TOROUE I APPLICATION TO INLET NUTS HOE N' H8ER STUD 10.000 Pil TTRFie J qag.E TYPE THREAD FT 'L AS TOR 00E TOR 00E VALUES ARE PUREtt OF $T005 .8 : M00[ 8 I I 8 - 8UNC 355 !a'4T VALUE REQUIRED TO WAKE A tlGHT F.ANGE JOINT. H0 CON 31GERATION HAS SE(N CliEN TO LO40 LNG WHICM HAY BE REQUIRED TO ALIGN PIPlNG OR ACC0! IODATE 'HER!.!AL PIP 110 STRilWS TOROUE VALUES APPLY ONLY TO y, SPIRAL WOUND GASKETS WITH EETAL TO HETAL JOINT COMTACT ,f OO 9 O 'trlLET FLANGE BOLTING CHART CQ-JI533VI ELECTROWATic h f VALVES ASME SECTION III~ O IL -.J DM1.37: WHR ~ CK'O. 37: Ed 8 O ATE 511/72

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