Cashco P1 User Manual

Model p1, Single stage pressure reducing regulator, I. description and scope

INSTALLATION, OPERATION & MAINTENANCE MANUAL (IOM)

IOM-P1

11/13

SECTION I

I. DESCRIPTION AND SCOPE

The Model P1 is a pressure reducing regulator used to control downstream (outlet or P

) pressure. Sizes are 1/4"

and 3/8" (DN8 and DN10) FNPT or 1/2" (DN15) with Tri-Clamp connections. The unit is suitable for gaseous or liquid
services. Refer to Technical Bulletin P1-TB for design conditions and selection recommendations.

SECTION II

II. INSTALLATION

MODEL P1

SINGLE STAGE

PRESSURE REDUCING REGULATOR

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. Strainers are rec om -
mend ed.

7. In plac

ing thread seal ant on pipe ends pri or to

en gage ment, ensure that excess material is

CAUTION

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.

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 P1):

Regulator may be rotated around the pipe axis
360°. Recommended position is with aluminum
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.

Recommended Piping Schematic

For Pressure Reducing Station

Outlet
@P

SRV

Supply
@P

Bypass

Model P1
Reducing
Regulator

Blowdown-Drain