© 2019 Emerson. All rights reserved.
VCIOM-14764-EN 22/01
CASH VALVE™
TYPES K-10 AND K-15 BACK PRESSURE VALVES
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
Before installation, these instructions must be carefully read and understood.
DESCRIPTION
The Types K-10 and K-15 are fully automatic
piston type back pressure valves. They
are designed to dependably maintain a
predetermined pressure in a vessel or system
by maintaining a predetermined valve inlet
pressure and relieving the excess pressure
into a lower pressure line. Types K-10 and K-15
valves are not emergency relief devices but are
designed for regulating continuous pressure.
SPECIFICATION DATA
Service:
For water, liquids and fuel
oils – light to medium viscosities.
NOT FOR AIR OR STEAM
. Designed to limit a
specific pump discharge pressure on machine
tool hydraulic systems, oil burning equipment,
rams, presses, lifts, etc. The Types K-10 and
K-15 are well suited for bypass applications on
high pressure pumps or any system requiring
automatic regulation of pump discharge
pressure, especially in the chemical and
process field (waste treatment-desalination)
and car washes.
Sizes:
K-10: ¼",
3
/
8
", ½", ¾", 1",
and
1
1
/
4
"
K-15:
¼",
3
/
8
", ½", and ¾"
Connections:
NPTF Threaded female
bottom inlet, side outlet
Body:
Bronze
Maximum
Temperature:
450°F (232°C)
Pressure
Control Range:
K-10: 15-600 psig
(1.03-41.4 bar)
K-15: 20-1500 psig
(1.37-103.4 barg)
INSTALLATION INSTRUCTIONS
When installing the valve, connect the line
(usually the pump discharge line) from the
system pressure to be regulated to the bottom
(inlet) connection on the valve. Connect the
bypass return line to the side outlet on the
valve. All fluid in excess of the valve pressure
setting will now be automatically relieved
or by-passed to maintain the correct pump
discharge (system) pressure.
Thoroughly flush out the valve and the adjacent
piping before installing the valve to remove
any foreign material to ensure efficient and
trouble-free operation for which the valve
was designed.
In the typical installations shown on the
following page, the Types K-10 and K-15 valves
are shown installed in the horizontal position
with the spring chamber upright. This is the
recommended way to install the valve. The
valve will function well in any position but
servicing it is more difficult in other positions.
WARNING
Failure to follow these instructions or to properly
install and maintain this equipment could result in
an explosion, fire and/or chemical contamination
causing property damage and personal injury
or death.
Cash Valve back pressure regulators, relief
and differential relief valves must be installed,
operated and maintained in accordance with
federal, state and local codes, rules and
regulations and Emerson Process Management
Regulator Technologies, Inc. instructions.
If a leak develops or if the outlet continually vents
gas, service to the unit may be required. Failure
to correct trouble could result in a hazardous
condition. Only a qualified person shall install or
service the unit.
Installation, operation and maintenance
procedures performed by unqualified person
may result in improper adjustment and unsafe
operation. Either condition may result in
equipment damage or personal injury. Call a
qualified person when installing, operating and
maintaining the Type K10 Back Pressure valves.
CALIFORNIA PROPOSITION 65 WARNING
This product can expose you to chemicals
including lead, which is known to the State of
California to cause cancer, birth defects or other
reproductive harm. For more information, go to
www.P65Warnings.ca.gov.
INTRODUCTION
Scope of the Manual
This manual provides instructions for the
installation, adjustment and maintenance for
the Type K10 Back Pressure valves.