cashco P3 Installation, Operation & Maintenance Manual

Two stage cylinder gas pressure reducing regulator

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ISO Registered Company
I. DESCRIPTION AND SCOPE
The Model P3 is a pressure reducing regulator used to control downstream (outlet or P
sizes 1/4" (DN8), 3/8" (DN10) and 1/2" (DN15). The unit is suitable for cylinder gaseous services. Refer to Techni-
cal Bulletin P3-TB for design conditions and selection recommendations.
II. INSTALLATION
Installation of adequate overpressure protection
is recommended to pro tect the regulator from
over pres sure and all down stream equip ment
from dam age in the event of regulator failure.
1. An inlet block valve should always be installed.
2. If service application is continuous such that
shut down is not readily accomplished, it is rec-
ommended that an inlet block valve, outlet block
valve, and a manual bypass valve be installed.
3. Pipe unions should be installed to allow removal
from piping.
4. An outlet pressure gauge should be located ap-
proxi mately ten pipe diameters downstream, and
within sight.
5. All installations should include a downstream re-
lief de vice if the inlet pressure could exceed the
pres sure rating of any downstream equip ment or
the maximum outlet pressure rating of the unit.
6. Clean the pip ing of all foreign material including
chips, welding scale, oil, grease and dirt before
installing the reg u la tor.
mend ed.
7. In plac ing thread seal ant on pipe ends pri or to
en gage ment, ensure that excess material is
INSTALLATION, OPERATION & MAINTENANCE MANUAL (IOM)
MODEL P3
TWO STAGE CYLINDER GAS
PRESSURE REDUCING REGULATOR
CAUTION
Strainers are rec om-
SECTION I
SECTION II
Recommended Piping Schematic
re moved and not allowed to enter the regulator
upon startup.
8. Flow Direction: Install so the flow direction match-
es the inlet stamp on the main regulator body (1).
9. For best performance, install in well drained hori-
zon tal pipe.
10. Basic Regulator - (Refer to Figure 2, Model P3):
Regulator may be rotated around the pipe axis
360°. Recommended position is with 2nd stage
knob (4) ver ti cal upwards.
11. Regulators are not to be buried un der ground.
12. For insulated piping systems, recommendation is
to not insulate regulator.
) pressure. Available in
2
For Pressure Reducing Station
IOM-P3
03/16

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Summary of Contents for cashco P3

  • Page 1 SECTION I I. DESCRIPTION AND SCOPE The Model P3 is a pressure reducing regulator used to control downstream (outlet or P ) pressure. Available in sizes 1/4" (DN8), 3/8" (DN10) and 1/2" (DN15). The unit is suitable for cylinder gaseous services. Refer to Techni- cal Bulletin P3-TB for design conditions and selection recommendations.
  • Page 2: Principle Of Operation

    (upstream) block observed and man u al ly reg u lat ed. Close the valve. Close the outlet (downstream) valve only if reg u la tor re mov al is required. outlet (down stream) block valve. IOM-P3...
  • Page 3: Maintenance

    Option-M, main tenance must in clude a level phragm (7.1), ac tu a tor post (7.2), actuator of clean li ness equal to Cash co clean ing stan- gasket (7.4), actuator o-ring (7.5). Remove dard #S-1134. Contact factory for details. di a phragm gas ket (10). IOM-P3...
  • Page 4 Option-M, main tenance must in- NOTE: Use only parts man u fac tured and clude a level of clean li ness equal to Cash co's sup plied by Cashco, Inc. for these products. clean ing stan dard #S-1134. Contact factory See Section VIII.
  • Page 5: Troubleshooting Guide

    Check system; isolate (block) flow at regulator inlet - not outlet. Relocate regulator if necessary. No pressure relief protection. Install safety relief valve, or rupture disc. Restricted diaphragm movement. Ensure no moisture in spring chamber at temperatures below freeze point. IOM-P3...
  • Page 6: 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 7 Actuator Gasket -----------------‡‡ Actuator O-ring ------------------‡‡ Poppet --------------------------------- ‡‡ Poppet Spring ----------------------- ‡‡ Diaphragm Gasket ----------------- ‡‡ Seat ------------------------------------ ‡‡ Seat Retainer ------------------------ ‡‡ Range Spring * Spring Clip Inline Filter ---------------------------- ‡‡ Snap in cover ‡‡ Recommended Spare Part IOM-P3...
  • Page 8 Cashco, Inc. Cashco GmbH Cashco do Brasil, Ltda. P.O. Box 6 Handwerkerstrasse 15 Al.Venus, 340 Ellsworth, KS 67439-0006 15366 Hoppegarten, Germany Indaiatuba - Sao Paulo, Brazil PH (785) 472-4461 PH +49 3342 30968 0 PH +55 11 99677 7177 Fax. # (785) 472-3539 Fax.

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