SM-400.8002
The C-2 Relay Valve functions to reproduce in
substantial volume whatever pressure is applied to the
small volume control portion of the valve itself. Its
essential purpose is to increase the speed of operation
for devices such as brakes, clutches, positioning
devices and to reduce trans-mission time in control
lines. This valve is usually directed by a relatively small
pressure control valve, such as a CONTROLAIR
®
Valve, which is located at some distance from the
controlled volume and is connected by small diameter
pipe or tubing.
C-2 RELAY VALVE
SERVICE INFORMATION
The user of these devices must conform to all applicable
electrical, mechanical, piping and other codes in the
installation, operation or repair of these devices.
INSTALLATION!
Do not attempt to install, operate or repair
these devices without proper training in the technique of
working on pneumatic or hydraulic systems and devices,
unless under trained supervision.
Compressed air and hydraulic systems contain high levels of
stored energy. Do not attempt to connect, disconnect or
repair these products when a system is under pressure.
Always exhaust or drain the pressure from a system before
performing any service work. Failure to do so can result in
serious personal injury.
MOUNTING!
Devices should be mounted and positioned in
such a manner that they cannot be accidentally operated.
WARNING: INSTALLATION AND
MOUNTING
INSTALLATION
Two 9/16 holes are provided on the pipe bracket for
mounting of the valve. Suitable clearance should be
allowed to permit removal of the valve portion from the
pipe bracket for servicing without disturbing the piping.
Ports for air connections are numbered on the pipe
bracket and the sizes are as follows:
1 - Supply, 1/2" - 14 NPT
2 - Control, 1/4" - 18 NPT
3 - Delivery, 1/2" - 14 NPT
EX- Exhaust, 3/4" - 14 NPT
MAINTENANCE
C
-2 Relay Valve should be visually inspected for
wear and given an “in system” operating
performance and leakage test at least once a
year. If these visual observations indicate valve
repair is required, the valve must be removed,
repaired and tested.
C-2 Relay Valve should be dismantled at periodic
intervals for inspection, cleaning and lubrication.
A major overhaul is recommended at one million
cycles. However, where frequency of use is such
that is would require more than two years to
obtain one million cycles, the valve must be
overhauled at the two year period.
After disassembly, clean all metal parts with a
nonflammable solvent. Rinse thoroughly and
blow dry with a low pressure air jet. Replace all
rubber parts and those parts which are damaged,
corroded, or worn.
The diaphragm and rubber packing rings should
be carefully inspected and replaced if cracked or
worn.
During re-assembly, lubricate all rubber parts
except diaphragm with Dow Corning 55 M
Grease and all metal-to-metal surfaces with
Number 107 Lubriplate.
ADJUSTMENT
The C-2 Relay Valve requires no adjustment.
The supply pressure should not exceed a
maximum of 250 psi. The control pressure
normally should not exceed 150 psi.
For additional dimensional information, ask for
drawing ID-76233-1.
