Cashco C-CS User Manual

Model c-cs “clean steam, Pressure reducing regulator

IOM-C-CS

12-13

MODEL C-CS

“CLEAN STEAM”

PRESSURE REDUCING REGULATOR

SECTION l

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

I. DESCRIPTION AND SCOPE

Model C-CS is a pressure reducing regulator used to control down stream (outlet or P

) pressure. Inlet and outlet sizes

are 3/4" (DN20), 1" (DN25), 1-1/2" (DN40), 2" (DN50) and 3" (DN80) with Tri-Clamp

fi tting connections. This regula-

tor is primarily designed for steam service at tem per a tures equal to or less than 366°F (185°C); this cor re sponds to
150 psig (10.3 Barg) sat u rat ed steam; however the unit may also be used for clean gaseous or liquid applications.

SECTION II

II. INSTALLATION

1. An inlet block valve should always be in stalled.

2. If service application is continuous such that

shutdown is not readily accomplished, it is
recommended that inlet and outlet block valves
and a manual bypass valve be in stalled.

3. An outlet pressure gauge should be lo cat ed

ap prox i mate ly ten pipe diameters down stream
and within sight.

4. All installations should include a down stream

re lief device if the inlet pressure could exceed
the pressure rating of any down stream equip-
ment.

5. Flow Direction: Install so the fl ow enters

through the bottom connection and exits the
side connection.

6. Install in a well drained pipe, properly trapped,

with spring chamber (2) in the vertical position
to allow for proper drain ing.

7. For insulated piping systems, the regulator

should not be insulated.

SECTION III

III. PRINCIPLE OF OPERATION

1. Movement occurs as pressure variations reg-

is ter on the diaphragm. The registering pres-
sure is the outlet, P

or down stream pressure.

The range spring opposes di a phragm move-
ment. As the outlet pressure drops, the range
spring pushes the diaphragm down, opening

The Model C-CS should never be used as a shut-off device.

CAUTION

Do not apply spring load or operate regulator with
hitch pin (21) removed from top of guide post (27 ).
Pre ma ture di a phragm failure will re sult.

CAUTION

Installation of adequate overpressure protection is
recommended to protect the regulator from overpres-
sure and all downstream equipment from damage in
the event of regulator failure.

CAUTION

Inlet

@ P

Outlet
@ P

SRV

Bypass

(Recommended Piping Schematic for Pressure Reducing Station)

Model C-CS

Reducing Regulator

Blowdown Drain