Cla-Val 100-22 600 Series - Manual

The Cla-Val Model 100-22 Powercheck Valve is a hydraulically
operated diaphragm valve with a built-in check feature to prevent
return flow. Available in globe or angle pattern, it consists of four
major components: the body, intermediate chamber, diaphragm
assembly and cover. The diaphragm assembly is the only moving
part.
The diaphragm assembly which is guided top, center and bottom by a
precision machined stem utilizes an FDA approved non-wicking
diaphragm of nylon fabric bonded with synthetic rubber. A synthetic
rubber disc retained on three and one-half sides forms a drip-tight
seal with the renewable seat when pressure is applied above the
diaphragm. When pressure above the diaphragm is relieved, the
valve opens wide. The rate of closing or opening can be controlled by
modulating the flow into or out of the cover chamber. When a pres-
sure reversal occurs the valve will immediately close, preventing
reverse flow through the valve. The split stem will allow the disc
retainer assembly to check closed regardless of the position of the
diaphragm.
The Model 100-22 Powercheck Valve is recommended on system
applications where a positive check feature is necessary to prevent
reverse flow.
Check Action
When a static condition or pressure
reversal occurs, the split stem design
allows the valve to instantly check
closed. Return flow is prevented
regardless of the diaphragm's position.
• Built-in Automatic Check Valve
• Reduced Cavitation Design
• Service Without Removal From Line
• Packless Construction
• Drip-Tight and Positive Seating
100-22
600 Series
Powercheck Valve
Full Open Operation
When operating pressure below the
diaphragm is greater than the pres-
sure in the cover chamber, the valve
is held open, allowing full flow.
Tight Closing Operation
When pressure below the
diaphragm is relieved and operating
pressure is applied to the cover
chamber, the valve closes
drip-tight.
Principle of Operation
Four-Way Control
Four-Way Control
Four-Way Control
Note: For optimum operation of built-in check feature, installation with stem vertically up is recommended.
MODEL
(Reduced Internal Port)