ML20155K615
| ML20155K615 | |
| Person / Time | |
|---|---|
| Site: | Salem, Hope Creek, 05000000 |
| Issue date: | 05/27/1986 |
| From: | Corbin McNeil Public Service Enterprise Group |
| To: | Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-85-003, IEB-85-3, MR-N86080, NUDOCS 8605290070 | |
| Download: ML20155K615 (16) | |
Text
.
Pubhc Semce Electnc and Gas Company Corbin A. McNeill, Jr.
Pubhc Seme n Electnc and Gas Company P O Box 236. Hancocks Bndge, NJ C8038 609 339-4800
%ce Pres. dent -
Nuclear May 27, 1986 NLR-N86080 U.
S.
Nuclear Regulatory Commission Region 1 631 Park Avenue King of Prussia, PA 19406 Attention:
Dr. Thomas E.
- Murley, Regional Administrator Gentlemen:
IE BULLETIN 85-03 MOTOR-OPERATED VALVE COMMON MODE FAILURES DURING PLANT TRANSIENTS DUE TO IMPROPER SWITCH SETTINGS SALEM AND HOPE CREEK GENERATING STATION FACILITY OPERATING LICENSES DPR-70, DPR-75 AND NPF-50 Public Service Electric and Gas Company (PSE&G) hereby forwards its response to IE Bulletin 85-03 for your review.
Atte.:hment 1 provides the plant specific response for Salem Generating Station, Units 1 and 2. provides the response for Hope Creek Generating Station.
Should you have any questions regarding this information, please feel free to contact us.
Sincerely, 1
Attachments C
Mr. Donald C.
Fischer Licensing Project Manager - Salem Mr. Thomas J.
Kenny Senior Resident Inspector - Salem
\\ti
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8605290070 860527 PDR ADOCK 05000272 l \\
G PDR
Dr. Thomas E. Murley May 27, 1986 C
Mr. Dave Wagner Licensing Project Manager - llope Creek Mr. William Borchardt Senior Resident Inspector - flope Creek US Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 1
i
Ref:
IE BULLETIN 85-03 STATE OF NEW JERSEY
)
)
SS.
COUNTY OF SALEM
)
i Corbin A. McNeill, Jr., being duly sworn according t'o law deposes and says:
I am Vice President of Public Service Electric and Gas Company, and as such, I find the matters set forth in our letter dated May 27, 1986, concerning our response to IE Bulletin 85-03, Operating Licenses DPR-70, DPR-75 and NPF-50, are true to the best.of my knowledge, information and belief.
M Subscribed and Sworn to before me this J7 th day of 1986 Lsi sw Notary Public of New Jersey DONNA G. HITCHNER NOTARY PUBUC OF NEW JERSEY My Commission expires on My cnmminton Expires March 24,1987
r ATTACHMENT 1
^
SALEM GENERATING STATION UNITS 1 AND 2 RESPONSE TO IE BULLETIN 85-03 In preparing a response to IE Bulletin 85-03, Public Service Electric and Gas Company (PSE&G) contacted NRC Region 1 to clarify the scope of review required for Pressurized Water Reactors (PWR).
In a telephone conversation with Mr.
R.
J.
Kiessel of Region 1, it was determined that for PWRs, only the Auxiliary Feedwater System (AFW) and the highest pressure Emergency Core Cooling System (ECCS) need be considered.
The AFW systems for Salem Units 1 and 2 are identical.
All power operated valves utilized in the AFW systems are air operated and as such, are not subject to the requirements of Bulletin 85-03.
The highest pressure ECCS subsystem utilizes two centrifugal charging pumps to draw water from the Refueling Water Storage Tank (RWST) and discharge through the Boron Injection Tank (BIT) to the four reactor coolant loop cold legs.
This arrangement is identical for both Salem Units.
The following paragraphs provide PSE&G's response to items (a) through (f) of Bulletin 85-03, insofar at the ECCS is affected.
Item (a)
" Review and document the design basis for the operation of each valve.
This documentation should include the maximum differential pressure expected during both opening and closing the valve for both normal and abnormal events to the extent that these valve operations and events are included in the existing, approved design basis, (i.e.,
the design basis documented in pertinent licensee submittals such as FSAR analyses and fully-approved operating and emergency procedures, etc.).
When determining the maximum differential pressure, those single equipment failures and inadvertent equipment operations (such as inadvertent valves closures or openings) that are within the plant design basis should be assumed."
PSE&G Response The valves requiring analysis in accordance with item (a) and their appropriate differential pressures are listed below.
In determining the maximum differential pressure, the worst credible conditions that a valve might experience were postulated.
This included the consideration of equipment failure (s) and in-advertent equipment operations.
In some cases, this approach required the assumption of more than one component failure and/or operator error.
However, by employing this methodology it can be assured that plant conditions based upon the updated FSAR analyses, ERGS, and the other approved operating and emergency procedures would be enveloped.
VALVES SUBJECT TO BULLETIN 85-03 ANALYSIS VALVE NO.
DP DIRECTION
- FUNCTION (PSID)
SJ1, SJ2 185 Close Suction from RWST SJ4, SJ5 2670 Open Inlet to BIT SJ12, SJ13 2670 Open BIT discharge to RCS cold legs SJ45's 185 Open Suction from RHR system SJll3's 185 Open Charging system and Safety Injection system suction cross connect CV40, CV41 85 Close Suction from Volume Control Tank CV68, CV69 2670 Close Normal charging system isolation CV139, CV140 2670
'Open Charging pump mini-flow CV175 185 Close Emergency boration
- Direction in which the highest DP is postulated to occur, and not necessarily the direction for which the valve performs its safety function.
Item (b)
"Us i ng the results from item (a) above, establish the correct switch settings.
This shall include a program to review and revise, as necessary, the methods for selecting and setting all switches, (i.e.,
torque, torque bypass, position. limit, overload) for each valve operation (opening and closing).
"If the licensee determines that a valve is inoperable, the licensee shall also make an appropriate justification for continued operation in accordance with the applicable technical specification."
PSE&G Response A program for selecting correct valve switch set tings has been initiated.
This program consists of the following elements:
1.
Development of an analytical method for determining the valve actuator force required to overcome a given ditferential pressure.
2.
Calculation of valve actuator force required to overcome the maximum dif ferential pressure given in response to item (a).
3.
Stroke testing (i.e. no differential pressure present) of each valve identified in (a), using the Motor Operated Valve Analysis and Test System (MOVATS) to determine proper torque, torque bypass, and limit switch settings.
4.
Field testing using (MOVATS) to verify the analytical method developed in 1.
Field testing as discussed in item (4) will utilize MOVATS to determine the actual valve actuator forces developed at attainable (i.e., less than maximum) differential pressures.
The valves tested will be representative of those listed in response to item (a), but not necessarily identical.
In some cases, test data obtained from facilities other than Salem may be used.
Verification of the analytical method will consist of comparing the calculated valve actuator force required to overcome the differential pressure attained during the test with the actual valve actuator force developed during the test.
Completion of this program, including necessary procedural revisions, is scheduled for October 31, 1987.
For any valve determined to be inoperable, i.e.
the motor operator is unable to deliver the required thrust to overcome the differential pressure identified in item (a), a justification for continued operation will be provided.
Item (c)
" Individual valve settings shall be changed, as appropriate, to those established in item b, above.
Whether the valve setting is changed or not, the valve will be demonstrated to be operable by testing the valve at the maximum differential pressure determined in item a above with the exception that testing motor-operated valves under conditions simulating a break in the line containing the valve is not required.
Otherwise, justification should be provided for any cases where testing with the maximum differential pressure cannot practicably be performed.
This justification should ir4clude the alternative to maximum differential pressure testing which will be used to verify the correct settings.
" Note:
This bulletin is not intended to establish a requirement for valve testing for the condition simulating a
. break in the line containing the valve.
However, to the extent that such valve operation is relied upon on the design basis, a break in the line containing the valve should be considered in the analyses prescribed in items a and b above.
The resulting switch settings for pipe break conditions should be verified, to the extent practical, by the same methods that would be used to verify other settings (if any) that are not tested at the maximum differential pressure.
"Each valve shall be stroke tested, to the extent practical, to verify that the settings defined in item b above have been properly implemented even if testing with dif ferential pressure can not be performed."
PSI:&G Response The final valve switch settings will be based upon the program described in response to item (b).
Due to the nature of the postulated failures and the adverse system configurations required to' achieve the maximum differential pressures provided in response to item (a), it is not practical to test each valve at the maximum differential pressure.
Differential pressure testing will be performed to the extent described in response to item (b).
This testing verifies the adequacy of the analytical method used for calculation of valve actuator force requirements.
Using the calculated valve actuator forces required to overcome the maximum differential pressure, each valve identified in response to item (a) will be stroke tested with MOVATS to verify that the. final valve switch settings assure proper valve operation at the maximum differential pressure.
This testing is performed as an integral part of the program discussed in response to item (b).
Item (d)
" Prepare or revise procedures to ensure that correct switch settings are determined and maintained throughout the life of the plant.
Ensure that applicable industry recommendations are considered in the preparation of these procedures."
PSE&G Response Salem currently has permanent plant procedures that reflect the switch settings of motor-operated valves.
These procedures will be revised to reflect the results generated in the previously discussed portions of the program.
Scheduled completion for this activity is October 31, 1987.
_4
Item (e)
"Within 180 days of the date of this bulletin,. submit a written report to the NRC that:
(1) reports the results of item'a and (2) contains the program to accomplish items b through d above including a schedule for completion of these items."
PSE&G Response Refer to the response to items-(a) through (d) above.
Item (f)
" Provide a written report on completion of the above program.
This report should provide (1) a verification of completion of the requested program, (2) a summary of the findings as to valve operability prior to any adjustments as a result of this bulletin, and (3)
- a. summary of data in
.accordance with Table 2, Suggested Data Summary Format.
The NRC staff intends to use this data to assist in the resolution of Generic Issue II.E.6.1.
This report shall be submitted to the NRC within 60 days of completion of the program.
Table 2 should be expanded, if appropriate, to include a summary of all data required to ' evaluate the responseLto this bulletin."
PSE&G Response A written report will be issued within 60 days after completion of the above program...
ATTACHMENT 2 HOPE CREEK GENERATING STATION RESPONSE TO IE BULLETIN 85-03 Public Service Electric and Gas Company has conducted an extensive review program for "O" safety related motor operated valves in use at Hope' Creek as part of the effort to prepare Hope Creek for commercial operation.
This' program utilized the Motor Operated Valve Analysis and Test System (MOVATS) to demonstrate and document motor operator seating thrust, limit switch settings, motor current values, and valve timing in accordance with appropriate design specifications.
The following paragraphs provide PSE&G's response to items (a) through (f) of IE Bulletin 85-03.
Item (a)
" Review and document the design basis for-the operation of each valve.
This documentation should include the maximum differential pressure expected during both opening and closing the valve for both normal and abnormal events to the extent that these valve operations and events are included in the existing, approved design basis, (i.e.,
the design basis documented in pertinent licensee submittals such as FSAR analyses and f ully-approved operating and emergency procedures, etc.).
When determining the maximum differential pressure, those single equipment failures and inadvertent equipment operations (such as inadvertent valves, closures or openings) that are within the plant design basis should be assumed."
PSE&G Response The valves requiring analysis in accordance with item (a) and their appropriate differential pressures are listed in Table 1.
Item-(b)
"Using the results from item (a) above, establish the correct switch settings.
This shall include a program to review and revise, as necessary, the methods for selecting and setting all switches, (i.e.,
torque, torque bypass, position limit, overload) for each valve operation (opening and closing).
"If the licensee determines that a valve is inoperable, the licensee shall also make an appropriate justification for continued operation in accordance with the applicable technical. specification."
PSE&G Response The program for selecting correct valve switch settings at Hope Creek is complete.
That program consisted of the following elements:
1.
Calculation of design differential pressures during the preparation of equipment specifications.
2.
Development of initial torque switch settings by the valve or motor-operator vendors.
3.
Vendor testing of representative valves at design flows and differential pressures to verify the calculations performed in (1), and the switch settings selected in (2).
4.
Stroke testing (i.e. no differential pressure present) of all valves listed in Table 1, using the Motor Operated Valve Analysis and Test System (MOVATS) to verify proper torque, torque bypass, and limit switch settings.
Limit switch settings were developed to meet system requirements (e.g. bypass limits, indication lights, system interlocks, etc.).
For Hope Creek, all "Q"
safety related valves have the motor overloads bypassed during normal operation to assure that for any event, the valves will operate.
Additionally, existing circuitry permits all switches to be bypassed from the control room.
Hope Creek completed this program during initial testing of systems in support of plant licensing.
As such the requirement to provide justifications for continued operation is not applicable.
Item (c)
" Individual valve settings shall be changed, as appropriate, to those established in item b, above.
Whether the valve setting is changed or not, the valve will be demonstrated to be operable by testing the Jalve at the maximum differential pressure determined in item a above with the exception that testing motor-operated valves under conditions simulating a break in the line containing the valve is not required.
Otherwise, justification should be provided for any cases where testing with the maximum dif ferential pressure cannot practicably be performed.
This justification should include the alternative to maximum dif ferential pressure testing which will be used to verify the correct settings.
A
/
" Note:
This bulletin,is not intended to establish a requirement for valve testing for the condition simulating a
./ break in.the line coretaining the valve.
However, to the extent that such valve operation is.re)..ied upon on the design basis, a break in the line containing. the valve should be considered in the analyses prescribed in items a and b above.
The resulting, switch settings for pipe break conditions should be verified, to the extent practical, by the same methods that would be used to verify other settings (if%any) that are not tested at the maximum differential pressure.
'"Each valve shall'be stroky tested, to the extent practical, to verify that the settings defined in item b above have been properly implepented even if testing with differential pressure can not be performed."
PSE&G Response The final valve switch settings were based upon the program described,in. response _to item (b).
Testing at design flow and ditterent.ialt pressure testing was performed on representative "Q" saf ety' related valves, but not on the valves listed in Table 1.
~This testing verified both the analytical method used in
, determining the design differential pressures and the vendors l Lability to accurately determine proper torque switch settings for a given dif f erentia'l pressdre.
As such, differential pressure
. testing of the valves listed in Table 1 is not required.
As discussed previously in the response to item (b), each valve
' - listed in Table 1 has been stroke tested using MOVATS, to verify implementation of proper switch ' settings.
Item (d) m
, " Prepare or revise procedures to ensure that ~ correct switch settings are determined and maintained throughout the life of the plant."
EnsU re, that applicable ind,ustryx recommendations are consideredmin the preparation of these procedures."
- s PSE&G Response
- Procedures 'GTP-8 and GTI-08B-0001 were used during pre-operhtional testing for o,riginal valve setup.
Hope Creek Maintenance Procedure 'MD-GP.2Z-031(Q) is currently being used to ensure correct switch settings are determined and maintained.
.This procedure on'compasehs all known information at this time to
, prevent malfunction or mis-operation of motor' operated valves.
Item (e)
"Within 180 days of the date of this bulletin, submit a written report to the NRC that:
7( 1 ) reports the results of item a and (2) contains the program to accomplish items b through d above including a schedule.for completion of these items."
4 t,
.t
7 PSE&G-Response 1 Refer.to items-(a).through (d) above.
Item-(f)
" Provide a written report on completion of the above program.- This report _should provide (1) a verification of completion of the requested program, (2) a summary of the findings as to' valve-operability prior to any adjustments as a result of this bulletin, and (3) a' summary of data in accordance with Table 2,-Suggested Data Summary Format.
The NRC staff intends to use this data to assist in the resolution of GenericEIssue II.E.6.1.
This report shall be submitted to'the NRC within 60 days of completion of the program.
Table 2 should be expanded, if appropriate, to include a summary of all data required to evaluate the response to this bulletin."
PSE&G-Response
.The information contained in Table 1, in combination with responses (a).through (e) above, provides a complete response to IE.Bulletin 85-03.
L
s,,
y 9-1 1
PAGE 1 OF.4' TABLE 1 i -
REACTOR CORE ISOLATION COOLING
- 1. - STEAM LINE INBOARD ISOLATION:-
VALVE VALVE OPERATOR DIFFERENTIAL PRESSURE DATA ID# FC-V001 ID# FC-HV-F007 NORMAL OPEN'
. - 0 PSI-MANUFACTURER - ANCHOR / DARLING MANUFACTURER - LIMITORQUE.
NORMAL CLOSE
-- 1125 PSI:
TYPE
- GATE MODEL
- SMB-00 ABNORMAL OPEN
- 1375 PSI '
a SIZE
-4" MOTOR PPM-
- 1700 ABNORMAL CLOSE-
-- 1375 PSI-RATING
.- 900 LB.
OUTPUT SPEED - 11 SECONDS TORQUE SET /OPEN
- 2.25
. TORQUE SET /CLOSE - 2.25 l
2.
STEAM LINE OUTBOARD. ISOLATION:
4 j
VALVE VALVE OPERATOR DIFFERENTIAL PRESSURE DATA i
i ID# FC-V002 ID# FC-FV-F008 NORMAL OPEN
- 0 PSI l
MANUFACTURER - ANCHOR / DARLING-MANUFACTURER - LIMITORQUE NORMAL CLOSE
-. 1125 PSI i
. TYPE GATE MODEL
- SMB-00 ABNORMAL OPEN
- 1375 PSI SIZE
-4" MOTOR PPM
- 1700 ABNORMAL CLOSE
- - 1375 PSI t
RATING
- 900 LB.
OUTPUT SPEED - 11 SECONDS TORQUE SET /OPEN
- 2.25 j
TORQUE SET /CLOSE - 2.25 l
3.
TURBINE INLET ISOLATION:
~
VALVE VALVE OPERATOR DIFFERENTIAL PRESSURE DATA
.ID# FC-V021 ID# FC-FV-F045
' NORMAL OPEN
- 1125 PSI MANUFACTURER
. ANCHOR / DARLING MANUFACTURER - LIMITORQUE NORMAL CLOSE
- 1125 PSI j
TYPE
- GLOBE-MODEL
- SMB-0 ABNORMAL OPEN
- 1375 PSI SIZE
-4" MOTOR PPM
- 1900 ABNORMAL CLOSE
- 1375 PSI RATING
- 900 LB.
. OUTPUT SPEED - 10 SECONDS
. TORQUE SET /OPEN
- 2.25 TORQUE SET /CLOSE - 2.25 I
e
'PAGE 2.OF:4 TABLE 1 (CONTINUED) 4.-
PUMP DISCHARGE ISOLATION:
VALVE VALVE OPERATOR DIFFERENTIAL PRESSURE DATA ~
ID# BD-V011 ID# BD-HV-F012 NORMAL OPEN
- 1140 PSI MANUFACTURER - ANCHOR / DARLING MANUFACTURER - LIMITORQUE-NORMAL CLOSE.
1140 PSI TYPE
- GATE MODEL
- SMB-0 ABNORMAL OPEN
- 1375 PSI SIZE
-6" MOTOR' PPM.
- 1900 ABNORMAL CLOSE-
- 1375 PSI RATING
- 900 LB.
OUTPUT SPEED - 10 SECONDS TORQUE SET /OPEN
- 2.0 TORQUE SET /CLOSE - 2.0 5.
-INJECTI'ON:
VALVE VALVE OPERATOR DIFFERENTIAL PRESSURE DATA ID# BD-V005 ID# BD-HV-F013 NORMAL OPEN
- 1140 PSI MANUFACTURER - ANCHOR / DARLING MANUFACTURER - LIMITORQUE NORMAL CLOSE 1140 PSI TYPE
- GATE MODEL
- SMB-0 ABNORMAL OPEN
- 1375 PSI SIZE
-6" MOTOR PPM
- 1900 ABNORMAL CLOSE
- 1375 PSI RATING
- 900 LB.
OUTPUT SPEED - 10 SECONDS TORQUE SET /OPEN
- 2.75 TORQUE SET /CLOSE - 2.5 S
PAGE 3 OF 4 TABLE 1 (CONTINUED)
HIGH PRESSURE COOLANT INJECTION 1.
TURBINE INLET ISOLATION:
VALVE VALVE OPERATOR DIFFERENTIAL PRESSURE DATA ID# FD-V003 ID# FD-HV-F007 NORMAL OPEN
- 1135 PSI MANUFACTURER - ANCHOR / DARLING MANUFACTURER - LIMITORQUE NORMAL CLOSE
- 1135 PSI TYPE
- GATE MODEL
- SMB-1 ABNORMAL OPEN
- 1210 PSI SIZE
- 10" MOTOR PPM
- 1900 ABNORMAL CLOSE
- 1210 PSI RATING
- 900 LB.
OUTPUT SPEED - 15 SECONDS TORQUE SET /OPEN
- 1.5 TORQUE SET /CLOSE --1.5 2.
INJECTION TO CORE SPRAY:
VALVE VALVE OPERATOR DIFFERENTIAL PRESSURE DATA ID# BJ-V001 ID# BJ-HV-F006 NORMAL OPEN
- 1230 PSI MANUFACTURER - ANCHOR / DARLING MANUFACTURER - LIMITORQUE NORMAL CLOSE
- 1230 PSI TYPE
- GATE MODEL
- SB-3 ABNORMAL OPEN
- 1375 PSI SIZE
- 14" MOTOR PPM
- 1900 ABNORMAL CLOSE
- 1375 PSI RATING
- 900 LB.
OUTPUT SPEED - 16 SECONDS TORQUE SET /OPEN
- 2.75 TORQUE SET /CLOSE - 2.75 3.
PUMP DISCHARGE ISOLATION:
VALVE VALVE OPERATOR DIFFERENTIAL PRESSURE DATA ID# BJ-V002 ID# BJ-HV-F007 NORMAL OPEN
- 1230 PSI MANUFACTURER - ANCHOR / DARLING MANUFACTURER - LIMITORQUE NORMAL CLOSE
- 1230 PSI TYPE
- GATE MODEL
- SB-3 ABNORMAL OPEN
- 1375 PSI SIZE
- 14" MOTOR PPM
- 1900 ABNORMAL CLOSE
- 1375 PSI RATING
- 900 LB.
OUTPUT SPEED - 16 SECONDS TORQUE SET /OPEN
- 1.5 TORQUE SET /CLOSE - 1.5 4.
INJECTION TO FEEDWATER:
VALVE VALVE OPERATOR DIFFERENTIAL PRESSURE DATA ID# FD-V059 ID# BJ-HV-8278 NORMAL OPEN
- 1230 PSI MANUFACTURER - ANCHOR / DARLING MAITUFACTURER - LIMITORQUE NORMAL CLOSE
- 1230 PSI TYPE
- GATE MODEL
- SMB-0 ABNORMAL OPEN
- 1375 PSI SIZE
- 8" MOTOR PPM
- 1900 ABNORMAL CLOSE
- 1375 PSI RATING
- 900 LB.
OUTPUT SPEED - 37 SECONDS TORQUE SET /OPEN
- 2.25 TORQUE SET /CLOSE - 2.5 O
PAGE 4 OF 4 TABLE 1 (CONTINUED) 5.
STEAM LINE INBOARD ISOLATION:
VALVE VALVE OPERATOR DIFFERENTIAL PRESSURE DATA ID# FD-V001 ID# FD-HV-F002 NORMAL OPEN
-0 PSI MANUFACTURER - ANCHOR / DARLING MANUFACTURER - LIMITORQUE NORMAL CLOSE
- 1120 PSI TYPE
- GATE MODEL
- SMB-1 ABNORMAL OPEN
- 1315 PSI SIZE
- 10" MOTOR PPM
- 1700 ABNORMAL CLOSE
- 1315 PSI RATING
- 900 LB.
OUTPUT SPEED - 35 SECONDS TORQUE SET /OPEN
- 3.0 TORQUE SET /CLOSE - 3.0 6.
STEAM LINE OUTBOARD ISOLATION:
VALVE VALVE OPERATOR DIFFERENTIAL PRESSURE DATA ID# FD-V002 ID# FD-HV-F003 NORMAL OPEN
-0 PSI MANUFACTURER - ANCHOR / DARLING MANUFACTURER - LIMITORQUE NORMAL CLOSE
- 1120 PSI TYPE
- GATE MODEL
- SMB-1 ABNORMAL OPEN
- 1315 PSI SIZE
- 10" MOTOR PPM
- 1700 ABNORMAL CLOSE
- 1315 PSI RATING
- 900 LB.
OUTPUT SPEED - 35 SECONDS TORQUE SET /OPEN
- 2.625 TORQUE SET /CLOSE - 2.75 7.
MINIMUM FLOW BYPASS:
VALVE VALVE OPERATOR DIFFERENTIAL PRESSURE DATA ID# BJ-V016 ID# BJ-HV-F012 NORMAL OPEN
- 1230 PSI MANUFACTURER - ANCHOR / DARLING MANUFACTURER - LIMITORQUE NORMAL CLOSE
- 1230 PSI TYPE
- GLOBE MODEL
- SMB-0 ABNORMAL OPEN
- 1375 PSI SIZE
-4" MOTOR PPM
- 1900 ABNORMAL CLOSE
- 1375 PSI RATING
- 900 LB.
OUTPUT SPEED - 7 SECONDS TORQUE SET /OPEN
- 2.75 TORQUE SET /CLOSE - 2.75 O
A
-