The Clamp valve is a flexible tube and a clamp. The tubing is made from TEFLON®
A TEFLON® reinforcing jacket heat shrunk over the tube element increases strength without sacrificing flexibility.
The clamping mechanism consists of a compressor which travels down a stem with rotation of the hand-wheel or power operator, and a yoke which travels up the stem at the same time. Together these components clamp off flow bubble-tight.
TEFLON® inserts - teardrop shaped in cross section - on each side of the TEFLON® tube prevent the tube element from being overstressed. All flexing takes place on the center line of the valve between the teardrops, insuring long life for the valve.
The radius clamps are connected to the yoke and to the compressor by means of links and link pins. These components, working together, provide a scissor-jack action which pushes the tube element inward during the opening cycle and pulls it outward during closing.
Four lift forks embedded top and bottom in the tube element on each side of the clamp act as powerful fingers which work with the links and link pins to pull the sealing surfaces apart even under full vacuum conditions.
Operating parts are encased in a ductile iron body with Standard ANSI Class 150 flanges. Because the valve is symmetrical and completely bi-directional, either end can be placed upstream.
Four threaded safety vent holes are provided, two in each of the symmetrical body halves, so that one hole is always at a low point regardless of the plane of installation. Three of the four holes are plugged when the valve is shipped. Plugs are easily moved to suit user's preference for vent hole location. Technical Info
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