Cla-Val 100-04 - Manual (Page 2)

• Built-in Automatic Check Valve
• Drip Tight, Positive Seating
• Globe or Angle Pattern
• Service Without Removal From Line
• Every valve factory-tested
The Cla-Val Model 100-04 Hy-Check 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 a body, cover and diaphragm
assembly. The diaphragm assembly which is guided top
and bottom by a precision machined stem is the only
moving part.
A synthetic rubber disc retained on three and one half sides
forms a drip-tight seal with the renewable seat when
operating pressure is applied above the non-wicking
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 pressure reversal occurs the
split stem will immediately allow the disc retainer assembly
to check closed regardless of the position of the
diaphragm.
The Model 100-04 is used on system applications such as
remote control, pressure regulation, solenoid control, etc.;
wherever a positive check feature is necessary to prevent
reverse flow. Its packless construction and simplicity of
design minimizes maintenance and assures a long
dependable service life.
100-04
Hy-Check Valve
Full Open Operation
When pressure in the cover
chamber is relieved to a zone of
lower pressure, the line pressure at
the valve inlet opens the valve,
allowing full 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.
Tight Closing Operation
When pressure from the valve inlet
is applied to the cover chamber, the
valve closes drip-tight.
On-Off Control On-Off Control
Modulating
Control
Principle of Operation
Note: For optimum operation of built-in check feature, installation with stem vertically up is recommended.
MODEL
(Full Internal Port)