cashco C-PRV Installation, Operation & Maintenance Manual
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cashco C-PRV Installation, Operation & Maintenance Manual

Pressure reducing regulator
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ISO Registered Company
I. DESCRIPTION AND SCOPE
Model C-PRV is a pressure regulator used to control downstream (outlet or P
are 1", 1-1/2", 2" and 3" with Tri-Clamp
temperatures less than 300°F (149°C). Refer to Technical Bulletin C-PRV-TB for specific design con di tions.
II. INSTALLATION
A. General:
1. An inlet block valve should always be installed
up stream of the regulator.
2. An outlet pressure gauge should be located
ap prox i mate ly ten pipe diameters down stream
and within sight.
3. All installations should include a downstream
re lief device if the inlet pressure could exceed
the pressure rating of any downstream
equip ment.
4. Flow Direction: Install so flow enters through
the bottom connection and exits the side
connection.
5. Install with spring chamber (2) in the vertical
up position to allow for proper draining.
III. PRINCIPLE OF OPERATION
A. General:
1. Movement occurs as pressure vari a tions
reg is ter on the di a phragm. The registering
pres sure is the outlet, P
pres sure.
diaphragm move ment. As the outlet pressure
drops, the range spring pushes the diaphragm
down, opening the port; as outlet pressure
IV. START-UP
A. General:
1. Ensure that lock-open pin (10) and hitch pin
(15) are in proper po si tion. See Sec tion VII.
2. Confirm that the proper range spring is
INSTALLATION, OPERATION & MAINTENANCE MANUAL
MODEL C-PRV
PRESSURE REDUCING REGULATOR
fitting connections. This regulator is only suitable for liquids and gases at
®
or downstream
2
The range spring op pos es
SECTION I
SECTION II
Installation of adequate overpressure pro tec tion
is recommended to pro tect the reg u la tor from
overpressure and all down stream equip ment from
damage in the event of regulator failure.
SECTION III
increases, the diaphragm pushes up and the
port opening closes.
2. A complete diaphragm failure will cause the
reg u la tor to fail open
The Model C-PRV should never be used as a shutoff
device.
SECTION IV
in di cat ed to be within the regulator by
inspection of the unit's nameplate. Apply
setpoint pres sures that are only within the
stated range.
IOM-C-PRV
) pressure. Inlet and outlet sizes
2
CAUTION
CAUTION
12-19

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Summary of Contents for cashco C-PRV

  • Page 1 1", 1-1/2", 2" and 3" with Tri-Clamp fitting connections. This regulator is only suitable for liquids and gases at ® temperatures less than 300°F (149°C). Refer to Technical Bulletin C-PRV-TB for specific design con di tions. SECTION II II. INSTALLATION A.

  • Page 2: Maintenance

    Returns WILL NOT BE ACCEPTED by 4. Remove hitch pin (15) and lift up nut or handle Cashco, Inc. without an MSDS form at tached to (6) to remove. the outside of shipping carton.
  • Page 3 21. Apply Emhart Bostic White Food Grade "Never a. Remove spacer (21). Seeze" or equivalent to threaded end of plug b. Remove set screw (24) CCW. (17). Thread adapter nut (20) onto plug (17) and tighten to 60 in-lbs of torque. IOM-C-PRV...

  • Page 4: Cleaning Procedure

    5. Insert pin (10), jostle nut or handle (6) lift up 3. Remove the lock-open pin (10) from the pin or push down to secure pin (10) thru ad just ing retainer hole in the spring cham ber (2). (See screw (5). Figure 2.) IOM-C-PRV...

  • Page 5: 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.
  • Page 6 Figure 3 Barstock Body shown above. See the next page for Item Number Descriptions. Adjusting screw pin and guide seals Composition Seat IOM-C-PRV...
  • Page 7 (1" & 1-1/2" Red. Port Only) Diaphragm Gaskt (LG Trim) U-Cup Seal (2 pcs.) Bearing (Soft Seal) Nut - (Handle Opt-4) Set Screw (Investment cast only.) Spring (Set Screw not needed for C-PRV Clamp with comp seat.) Pin (Cotterless Hitch) Diaphragm Spacer Diaphragm Set Screw...
  • Page 8 POTENTIALLY EXPLOSIVE ATMOSPHERES REGULATIONS 2016 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 and given in Schedule 1 of The Equipment and Protective Systems Indented for Use in Potentially Explosive Atmospheres Regulations 2016.
  • Page 9 1000HP-1+6, 1000HP-1+8, 1000LP, 1000LP(OPT-45), 1000LP(OPT-46G) 6987 8310HP, 8310HP-1+6, 8310HP-1+8, 8310LP, 8311HP, 8311LP 345, 345(OPT-45) BA1/BL1, PA1/PL1 C-BPV, C-PRV, C-CS D, D(CRYO), D(OPT-37), D(OPT-20), D(OPT-45) DL, DL(LCC), DL(OPT-45) BR, BR(CRYO) HP, HP(LCC), HP(OPT-45), HP(OPT46G), HP-1+6+S(OPT-40), HP-1+6+S P1, P2, P3, P4, P5, P7...

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