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PRESSURE REDUCING REGULATOR
I.
DESCRIPTION AND SCOPE
The Model 1000HP-5 and 1000HP-36 are cryogenic pressure reducing regulators used to control down stream
(outlet or P
) pressure to levels above 10 psig, and up to 300 psig (size dependent). Sizes are 1/2", 3/4", 1",
2
1-1/2" and 2".
The unit is designed for liquid or gaseous service with proper trim utilization, and proper jet selection.
Refer to Technical Bulletin 1000HP-CRYO-TB for sizing, application and selection recommendations.
Installation, operation and maintenance manuals (IOM's) exist for the following other Model 1000 products:
1000HP-Basic
II. INSTALLATION
1. An inlet block valve should always be in stalled.
2. If service application is continuous such that
shut down is not readily accomplished, it is
rec om mended that an inlet block valve, and a
manual bypass valve be in stalled.
3. Pipe unions must be installed to allow re mov al
from piping. Trim can only be changed by unit
removal from pipeline. If flanges are uti lized, a lap
joint flange is required on the inlet end of the valve
to help align bolt holes as the cylinder screws into
place.
4. An outlet pressure gauge should be located
ap prox i mate ly ten pipe diameters down stream,
and within sight.
5. All installations should include a down stream
relief de vice if the inlet pressure could exceed the
pressure rating of any downstream equip ment or
the maximum outlet pressure rat ing of the unit.
Installation of adequate overpressure pro tec tion is
recommended to pro tect the reg u la tor from over pres sure
and all down stream equip ment from dam age in the event
of regulator failure.
INSTALLATION, OPERATION & MAINTENANCE MANUAL
MODEL 1000HP - CRYOGENIC
1000LP-Basic
CAUTION
SECTION I
SECTION II
The maximum outlet pressure listed on the name plate is
the "upper operative limit" for the sensing diaphragm.
Higher pressures could damage the diaphragm. (Field
hy dro static tests frequently de stroy dia phragms. DO NOT
HY DRO STAT IC TEST THROUGH AN INSTALLED UNIT;
ISO LATE FROM TEST.)
6. Clean the piping of all foreign ma te ri al in clud ing
chips, welding scale, oil, grease and dirt before
in stall ing the valve. Strain ers are rec om mended.
1000HP-Differential
WARNING
IOM-1000HP-
Cryogenic
12-16
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Related Manuals for cashco 1000HP
Summary of Contents for cashco 1000HP
- Page 1 SECTION I DESCRIPTION AND SCOPE The Model 1000HP-5 and 1000HP-36 are cryogenic pressure reducing regulators used to control down stream (outlet or P ) pressure to levels above 10 psig, and up to 300 psig (size dependent). Sizes are 1/2", 3/4", 1", 1-1/2"...
-
Page 2: Principle Of Operation
1000LP (larger diaphragm) for down stream pres- high of an inlet pressure for the regulator to close sure control from 1-30 psig; 1000HP (small er off against. (Refer to Technical Bulletin, Tables 6 diaphragm) for down stream pressure control from and 7 for limits.) Reduced port, Option -12 allows... -
Page 3: Maintenance
2. Owner should refer to owner's proce dures for removal, handling and cleaning of reusable 1. Maintenance procedures hereinafter are parts, and disposal of nonreusable parts, i.e. based upon removal of the regulator unit asbestos gaskets, suitable sol vents, etc. from the pipeline where in stalled. IOM-1000HP-Cryogenic... - Page 4 (Options 1000-55, 1000-5 or 1000- 36) are as sem bled using special gasket sealant, Fluorolube GR-362 , or equivalent. Cashco, Inc. recommends following fac to ry cleaning spec ification #S-1134, or equiv a lent. Con tact factory for details. B. Diaphragm Replacement: Diaphragm sub-assembly consists of items (10), (11), (12), 1.
- Page 5 1-5/32" 1-7/16" 1-13/16" 1-25/32" 2-3/16" 5/8" 25/32" 3/4" 29/32" 7/8" 29/32" 13/16" 1-1/16" 1-7/16" 1-1/2" 1-25/32" 2-5/32" 9/16" 23/32" 3/4" 11/16" 7/8" 29/32" If either of the above dimensions are ex ceeded by 1/8", re place rocker arm (14). IOM-1000HP-Cryogenic...
- Page 6 Model 1000 regulator. torques are as follows: 2. Not removing the stud nut (10) will provide performance equal to original factory Model 1000HP-5 or -36 per form ance when a diaphragm(s) (20) Body Size Bolt Size Metal Diaph.
- Page 7 (21) and piston Di a phragm Replacement, Step 14. sub-assembly (24 or 24, 25 and 26) should be replaced. (Cashco, Inc., does not rec om mend E. Trim Removal and Replacement: attempting to replace the valve seat (21.2) by pressing out and then re-pressing in.
- Page 8 Cashco, Inc's., cleaning (24) port holes and rotate. Remove the stan dard #S-1134. Contact fac to ry for details.
-
Page 9: Troubleshooting Guide
Can be caused by excessive chattering. See No. 1 to remedy valve chatter. Can be caused by corrosive action. Consider alternate diaphragm material, or Option 1000-9, TFE diaphragm cover. Downstream (outlet) pressure buildup occurring that overstresses diaphragms. Pusher plate gasket leaking. Replace gasket. IOM-1000HP-Cryogenic... - Page 10 Possible Causes Over-pressurization downstream resulting in: Replace diaphragms. Correct potential source of downstream over- Bent metal diaphragm(s). pressure. Sprung rocker arm. Check measurements of rocker arm. Replace if necessary. Range spring overstressed/fatigued. Replace range spring; consider next higher range spring. IOM-1000HP-Cryogenic...
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Page 11: Section Viii
Cashco, Inc. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Cashco, Inc. product remains solely with the purchaser. - Page 12 21. CYLINDER ASSEMBLY 21.1 CYLINDER 21.2 VALVE SEAT 23. PISTON COLLAR 24. PISTON 25. SEAT DISC 26. SEAT DISC SCREW 27. RANGE SPRING 28. NAME PLATE 30. PISTON SPRING 35. DIAPHRAGM COVER (-9 OPT) 36. BODY O-RING (not shown) IOM-1000HP-Cryogenic...
- Page 13 ATEX requires that all components and equipment be evaluated. Cashco pressure regulators are considered components. Based on the ATEX Directive, Cashco considers the location where the pressure regulators are installed to be classified Equipment-group II, Category 3 because flammable gases would only be present for a short period of time in the event of a leak.
- Page 14 If the above issues are addressed by selecting options that do not have potential sources of ignition, avoiding options that have not been assessed, and by taking the proper usage issue precautions, then Cashco regulators can be considered to be a mechanical device that does not have its own source of ignition and thus falls outside the scope of the ATEX directive.
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