Page 125 - ParkerBrassCatalog2010

Parker Hannifn Corporation
Parker Brass Products Division
Otsego, Michigan
C21
C
In-Line Flow Control Valves
General Information
It is sometimes impossible to mount a fow control directly on the port
of the cylinder, either due to lack of space or because of the need
for remote adjustment of the fow control. To resolve this problem
in-line fow controls are designed to mount on the piping between the
directional valve and the cylinder or can be mounted on the control
panel next to other control units.
Designed to be versatile
Parker In-Line Flow Controls are unidirectional fow control valves.
Intake air fows freely through the fow control; exhaust air is metered
out through a specially designed adjustment screw. An arrow on the
body of the valve indicates the direction of controlled fow. Since it is a
tube to tube connection, our in-line fow controls may be installed as a
meter in or a meter out device.
Parker in-line fow controls can be easily added to existing circuitry.
Simply splice it into the cylinder port line. In-line fow controls may
be used individually or, they may be stacked together using two
joining clips, supplied standard with each valve. Panel mounting is
accomplished by using the through holes in the molded body.
Adjustment characteristics
Control is achieved through a fnely threaded special adjustment screw.
The special shaped adjustment screw produces a more linear fow
control than ordinary tapered screws.With the use of a locking nut,
the in-line fow control may be secured in its fnal setting. Settings are
maintained even under adverse conditions such as vibration. A captive
adjustment screw prevents loss or dangerous blow out.
Full fow in both directions
Intake capacity is always slightly greater than the full open exhaust
capacity, enabling maximum variation of speeds between outward and
return strokes.
Advantages
• Assembly in banks
• Panel mounting
• Allows other function fttings to be mounted on a cylinder
• Space saving
• Weight saving
• Flexibility
Valve Specifcations
MaximumWorking pressure: 145 PSI
Operating Temperature: +5° - +150° F
Body material: High resistance polyamide
Adjustment screw material: Brass
Clip
Slots
Inlet
chamber
Outlet
chamber
Inlet Exhaust
Flow regulation on the inlet port
Flow regulation on the exhaust port
Inlet
chamber
Outlet
chamber
Inlet Exhaust
Adjustment screw
Locknut
Exhaust
from cylinder
Check valve
To power
valve