Cash Valve Home Page
Low Pressure Back Pressure Valve
For service on air, water, oil and other non-corrosive
liquids and gases. Sizes: 1/2", 3/4", 1", 11/4"

Controls up to 25 psi. Automatically maintains desired
pressure in a line or system by discharging excess
pressure to the atmosphere or to a lower pressure
system. All bronze, neoprene-nylon diaphragm,
composition disc, sensitive adjusting spring. On
installation, a “T” is placed in the inlet line and a
sensing connection is run from it to the top of the valve.

FR, FR-6, FR-10
0 to 600 psi Back Pressure Valves

Centrifugal, regenerative turbine, reciprocating or
rotary pump bypass valve. Protects pump systems
from over pressure.

Sizes: 1/2", 3/4", 1", 11/4", 11/2", 2"

Protects against periodic high pressures; maintains a
desired inlet pressure by relieving to a lower variable
pressure, or to atmosphere. Relieves dependably at
adjusted pressures; shuts tight after relieving.
Features unique “Floating Ring” seating arrangement
that produces perfect seat contact. The FR valves
afford unusually close regulation, repeatability of
opening pressure and close reseating pressures.The
FR-10 is for more economical, lower pressure
applications — maximum pressure setting 250 psi.
(Provided with iron body and spring housing only).
Type FR is available in iron, bronze, steel or stainless
steel body; threaded connections; monel, stainless
steel or BUNA-N diaphragm. Pressure settings from 0
to 400 psi. The FR-6 is available for 200 to 600 psi.

Click here for PDF (CAVMC-0516-US).

Small Back Pressure Valves

For service on liquids, air and gases not corrosive to
brass. Recommended for bypass regulation on fuel oil
systems, compressor governor pilot control, and many
small to medium pumping system bypass jobs.
Ideally suited for many applications in the cryogenic

1/8", 1/4", 3/8" FRM
1/4", 3/8", 1/2" FRM-2

Automatically maintains a constant inlet or back
pressure. Functions as a pressure limiting regulator,
not as a safety device. Bronze body, stainless steel
seat ring and disc.

Click here for PDF (CAVMC-0516-US).

K-5, K-5C
Angle Back Pressure Valves

Suitable for pump systems of all kinds. Applicable on
water, other fluids and especially oils of all grades.

Sizes: 1", 11/4", 11/2", 2"

High-capacity valves. For flow up to 200 gallons per
minute in the larger sizes. Bronze body and trim,
threaded connections, bottom and side female
connections, brass spring chamber, stainless steel
adjusting spring, high temperature gaskets. K-5 has a
metal seat. K-5C has a soft seat for tight shut-off.
Relief pressures range from 5 to 150 psi.

Click here for PDF (CAVMC-0517-US).

Piston Type Back Pressure Valve

For water, other liquids, and light fuel oils. Not for
steam. Designed to limit a specific pump discharge
pressure on machine tool hydraulic systems, oil
burning equipment, rams, presses, lifts, etc.

Sizes: 1/4", 3/8", 1/2", 3/4", 1", 11/4"

Bronze angle body, stainless steel trim, threaded
connections, single metal-to-metal seat only, bottom
female inlet, side female outlet. Relief pressure
ranges from 15 to 600 psi. Maximum temperature is
450°F (232°C).

Click here for PDF (CAVMC-0517-US).

High Pressure, Angle By-pass Valve

Suited for by-pass applications on high pressure
pumps or any system requiring automatic regulation of
pump discharge pressure. Many applications in the
chemical and process field (waste
treatmentdesalination) and car washes.

Sizes: 1/4", 3/8", 1/2", 3/4"

Angle type by-pass valve handles high pressure up to
1500 psi in brass body. Threaded connections.
Maximum temperature 450°F (232°C).

Click here for PDF (CAVMC-0517-US).

Pilot Operated Back Pressure Valve

Suitable for air or water service.

Sizes: 1", 11/4", 11/2", 2"

Offers high-capacity, extremely accurate control. Main
valve features brass construction, BUNA-N diaphragm
and seat disc, stainless steel spring. Pilot is brass
with stainless steel spring, seat disc and seat ring;
bronze diaphragms for air service or neoprene
diaphragms for water. Pressure setting 15 to 200 psi.

Click here for PDF (CAVMC-0518-US).

Small By-pass Valve

For water, oil, and other fluids.

Sizes: 1/2", 3/4", 1"

Small, economical bypass valve for pressure control of
a less critical nature. Bronze body, stainless steel ball
seat. Metal-to-metal seat — does not close off drip
tight. Leak-proof cover cap and gasket. Male inlet,
female side outlet. Pressure ranges 10 to 250 psi.

Adjustable Angle By-pass Valve

An inexpensive solution to installations requiring
frequent changes in the set point. Designed for
bypass and overpressure protection in pumping
systems such as weed sprayers, etc. that are non-
corrosive to bronze.

Size: 1/2" only

Bronze body, BUNA-N disc and stainless steel spring.
One of three pressure springs is used, providing an
adjustable range of 10 to 60 lbs., 0 to 125 lbs., or 20 to
200 lbs. Male inlet, female outlet.

CP & CP2
Compressor Pilot Valve

Types CP and CP-2 are used as pilot valves in Rotary
Screw Compressors to control receiver pressure or
compressor discharge pressure. The Pilot Valves
provide a regulated output pressure that increases on
a desired ratio to provide input pressure to the air
intake valve. Benefits of the Types CP and CP-2 are
savings in energy, quieter Compressor operation, and
reduced wear.

Size: 1/4"

Bronze body, bronze trim, with stainless steel seat ring
and disc. Maximum Controlled pressure of 400 psig.
Back Pressure Valves
DRA- Low Pressure Back Pressure Valve
FR, FR-6, FR-10, 0 -600 PSI Back Pressure Valves
FRM, FRM-2, Small Back Pressure Valves
K-5, K-5C, Angle Back Pressure Valves
K-10, Piston Type Back Pressure Valve
K-15, High Pressure, Angle By-pass Valve
KP, Pilot Operated Back Pressure Valve
MC, Small By-pass Valve
CP & CP2, Compressor Pilot Valve
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NSW, Adjustable Angle By-pass Valve
Industrial Valves & Controls
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