Dispense Valve Model 455
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Description The 455 is supplied with all the components required for the valve to be used with silicone, urethane or vinyl tubing. The 455 valve can be used as a dispense valve or as an in-line, two-way (on-off) valve with adjustable flow. A Tridak controller or a user supplied device can be used to operate the valve. |
Operation
UNACTUATED - When the user-supplied 3-way normally closed valve is off,
the pinching surface of the spring loaded piston prevents flow by collapsing
the tube. The patented pinch stop adjusting screw limits tube stress and
provides a fixed start position for the piston. This control greatly extends
the tube life and insures shot to shot repeatability.
ACTUATED - When the user-supplied 3-way valve is on, air moves the pinch piston back to the adjustable micrometer stop. This controls the amount the tube opens, which, in turn, controls the flow rate of the fluid. This action, combined with the nozzle size (if a nozzle is used) and the time the 455 valve is open, governs the amount of fluid that is dispensed.
Pinch
Tubing
Tridak supplies .066 I.D. x .095 I.D. tubing made of Teflon®
and .125 I.D. Urethane tubing as standard and stocks a variety of other
materials (Viton®, silicone, buna, etc.) for special orders. Tubing
life will vary with the type of tubing used. Most materials will have
a life of 1 - 10 million cycles and certain materials, such as silicone
and natural rubber, may extend tubing life to a billion cycles. Please
consult your Tridak representative for availability of non-standard items.
Available
455 Models |
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