KMC Controls VCZ-44 Series - Manual

VEZ-41/44 Series, 2-Way/3-Way, NPT, Pneumatic Zone Control Valves 1 Installation Guide
Installation Guide
2-Way/3-Way, NPT, Pneumatic Zone Control Valves
VCZ-41/44 Series
Mounting Valve Body
1. Clean the lines upstream from the valve. Remove
any debris larger than 0.06" (0.015 mm).
2. Align the valve’s flow indicator with the system
flow (see page 2 for 3-way mixing or diverting
applications).
3. Mount the valve so the actuator is positioned over
valve.
CAUTION
To prevent condensation from dripping onto the
actuator housing, mount the valve with the actuator
in the upright position or, at most, at a 45° angle.
4. Seal valves with approved pipe sealant.
5. Using two wrenches, secure the valve to the pipe.
Torque should not exceed 75 ft-lbs. (102 N
•
m).
6. Eliminate air from the system to keep the valves
full of fluid during operation.
NOTE: If the system experiences large amounts of
debris, steps should be taken to keep the
system clean.
UP
CAUTION
Using mineral oil lubricants or other incompatible
substances in system fluids may damage EPDM rubber
seals in valves. Before using any lubricant or additive in
a water or ethylene glycol base, consult the substance
manufacturer for compatibility with EPDM (Ethylene
Propylene Diene Monomer).
CAUTION
If mounting the actuator to a valve already in-line,
close the shut-off valves in the piping (upstream
first, then downstream) or switch off the pump to
allow the differential pressure in the valve to drop.
1a. To remove an existing actuator, disconnect the
air supply, turn the ring nut (coupling piece)
counterclockwise until it is loose, and pull off the
actuator.
1b. For a new assembly, REMOVE the black plastic
attachment support ring from the valve body
using a screwdriver or pliers. (It is only used with
electronic actuators.)
CAUTION
For proper function, the black plastic actuator
attachment support ring must be REMOVED from
the top of the valve bonnet before mounting the
actuator.
Mounting Actuator on Valve Body
Two-Way VCZ-41 Series Three-Way VCZ-44 Series
CAUTION
Pneumatic devices must be supplied with clean, dry
control air. Any other medium (e.g., oil or moisture
contamination) may cause the device to fail.
1/8" NPT
Air Connection
Ring Nut to
Valve Body
1
2
Mounting Actuator on Valve Body
REMOVE Black
Plastic Attachment
Support Ring
if Present
NOTE: Only MCP-6101/6102 actuators are
compatible with these valve bodies. Older
MCP-6001/6002 actuators are not.
2. Place the actuator on top of the valve body and
firmly hand-tighten (only) the ring nut.