Cla-Val 100-02 Technical Manual - Manual (Page 2)

100-02
• Drip-Tight, Positive Seating
• Service Without Removal From Line
• Threaded or Flanged Ends
• Globe or Angle Pattern
• Every Valve Factory Tested
Powertrol Valve
The Cla-Val Model 100-02 is a hydraulically operated, diaphragm
actuated, globe, or angle pattern valve. It consists of four major
components: body, intermediate chamber, diaphragm assembly,
and cover. The diaphragm assembly is the only moving part.
The diaphragm assembly which is guided top and center by a
precision machined stem, utilizes a non-wicking diaphragm of
nylon fabric bonded with synthetic rubber. The diaphragm forms
a seal between the cover chamber and intermediate chamber. 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. As pressure above the diaphragm is
relieved and pressure is applied below the diaphragm, the valve
opens wide for full flow. The rate of closing or opening can be
controlled by modulating flow into or out of the diaphragm
chambers.
The Model 100-02 is recommended where independent
operating pressure is desired. Available in various materials and
in a full range of sizes, with either threaded or flanged ends, its
applications are many and varied.
Full Open Operation
When operating pressure below the
diaphragm is applied and operating,
pressure is relieved from the cover
chamber and, the valve is held
open, allowing full flow.
Modulating Action
The valve holds any intermediate
position when operating pressure is
equal above and below the
diaphragm. A Cla-Val four-way pilot
control with "lock" position can
maintain this balance by stopping
flow in the pilot control
system.
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 with Lock
MODEL
(Full Internal Port)