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CA5 and SA5 - ULTRA HIGH PURITY, SPRING LOADED
I. DESCRIPTION AND SCOPE
Models CA5/SA5 are spring operated back pressure regulators used to control upstream (inlet or P1) pressure. Sizes are
3/4" (DN20) and 1" (DN25). With proper trim uti li za tion, the unit is suitable for liquid or gaseous service. (NOTE: This
product was formerly identified as a Model C5 or S5; a Model CA5/SA5 and C5/S5 are one and the same product.)
II. REFERENCES
Refer to Technical Bulletin CA5/SA5-TB for tech ni-
cal specifications of a Model CA5/SA5 reg u la tor.
III. INSTALLATION
1. Install per direction of flow arrow indicated on
body, or "IN" and "OUT" markings.
2. Regulator may be rotated around pipe axis 360
degrees. For ease of maintenance, the rec om-
mend ed orientation is with the spring chamber
(4) upwards.
3. Provide space below, above, and around reg u la tor
for removal of parts during maintenance.
4. Install block valves and pressure gauges to pro-
vide means for adjustment, operation, bypass, or
removal of the regulator. A UHP filter is rec om-
mend ed before inlet to remove typical pipe line
debris from entering valve and damaging internal
"soft goods", primarily the dynamic seal and valve
seat.
INSTALLATION, OPERATION & MAINTENANCE MANUAL (IOM)
MODEL CA5/SA5
BACK PRESSURE REGULATORS
SECTION I
SECTION II
SECTION III
ABBREVIATIONS
CCW – Counter Clockwise
CW
– Clockwise
ITA
– Inner Trim Assembly
CAUTION
DO NOT HYDROSTATIC TEST THROUGH AN
IN STALLED UNIT; ISOLATE REGULATOR FROM
TEST. The upper range spring pres sure level
on the nameplate is the rec om mend ed "upper
op er at ing limit" for the sens ing di a phragm.
Higher pres sures could cause internal dam age.
Recommended Piping Schematic
For Back Pressure/Relief Station
IOM-CA5/SA5
02-20
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Related Manuals for cashco CA5
Summary of Contents for cashco CA5
- Page 1 3/4" (DN20) and 1" (DN25). With proper trim uti li za tion, the unit is suitable for liquid or gaseous service. (NOTE: This product was formerly identified as a Model C5 or S5; a Model CA5/SA5 and C5/S5 are one and the same product.) II.
-
Page 2: Principle Of Operation
CAUTION 5. The regulator may now be disassembled for inspection and pre ven ta tive main te nance while Do not walk away and leave a bypassed reg u la tor in-line. unattended! IOM-CA5/SA5... -
Page 3: Maintenance
6. Remove upper diaphragm pressure plate (8). parts. Only use original equipment parts sup plied by Cashco for re build ing or re pair ing 7. Remove diaphragm(s) (9) and examine to regulators. de ter mine if failed. If diaphragms (9) failed, de ter mine if op er at ing con di tions are ex ceed ing 4. - Page 4 NOTE: Regulators are originally supplied with a C. Disassembly of the ITA: level of clean li ness equal to Cashco clean- 1. To Disassemble the ITA (See Figure 2): ing standard #S-1662. Contact factory for details.
- Page 5 Repeat this pro ce dure until the adjust- ing screw keeps the two flanges faces from 3. Properly align all three cage bolt (18) holes touching by ap prox i mate ly 1/8 inch (3 mm). as there is only one proper alignment pos- IOM-CA5/SA5...
- Page 6 11. Install all flange bolts (12) and nuts (11) with nameplate (99) located under one bolt head. Hand-tighten nuts (11). 12. Evenly tighten body bolting (11,12) using an alternating cross pattern in one revolution increments. Tighten all bolts to 30-35 Ft-lbs (41-47 Nm). IOM-CA5/SA5...
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Page 7: Section Viii
Diaphragm continually breaks. Possible Causes Remedies A. Differential pressure across dia- Reference limits as recorded in technical bulletin as well as phragm may have exceeded limits. where the various pressures are acting. (See Tech Bulletin). IOM-CA5/SA5... - Page 8 A1. Remove internals, clean and if necessary, replace regulator. A2. Install UHP filter at inlet. B. Oversized regulator; plug operates Check actual flow conditions; resize regulator for minimum and directly next to seat. maximum flow; if necessary, replace with smaller regulator. IOM-CA5/SA5...
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Page 9: New Replacement Unit
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 10 Opt-1 - Closing Cap Figure 3: Model CA5/SA5 Item No. Description Item No. Description Cage Washer Adjusting Screw Cage Cap Screw Adjusting Screw Lock Nut Cage Closing Cap Valve Plug Spring Chamber 21 * Seal Spring Follower Body Range Spring...
- Page 11 ATEX 2014/34/EU: Explosive Atmospheres and Cashco Inc. Products Cashco, Inc. declares that the products listed in the table below has been found to comply with the Essential Health and Safety Requirements relating to the design and construction of products intended for use in potentially explosive atmospheres given in Annex II of the ATEX Directive 2014/34/EU.
- Page 12 1465, 3381, 3381(OPT-45), 3381(OPT-40) 4381, 4381(OPT-37), 4381(CRYO), 4381(OPT-45), 5381 MPRV-H, MPRV-L PBE, PBE-L, PBE-H CA-1, CA-2 CA1, SA1, CA4, SA4, CA5, SA5 DA2, DA4, DA5, DA6, DA8 DA0, DA1, DAP, SAP SLR-1, SLR-2, PTR-1 ALR-1, ULR-1, PGR-1 BQ, BQ(OPT-45), BQ(CRYO)
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