The model 455 valve is a pneumatically operated, normally closed pinch-type valve that features micrometer control over the amount of flow (the amount the tube opens) and precise control over tube closure (insures the accuracy and repeatability of operation and greatly extends pinch tube life.) Although tubing constructed of Teflon® is the recommended standard, 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 inline, two-way (on-off) valve with adjustable flow. A Tridak controller or a user supplied device can be used to operate the valve.

UN-ACTUATED OPERATION- When the 3-way, normally closed valve is off, the pinching surface of the spring loaded piston prevents flow by collapsing the tube. The 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 OPERATION- When the 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.

We supply .066 I.D. x .095 I.D. tubing made of Teflon® and .125 I.D. Urethane tubing as standard and stock 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.

MODEL OPTIONS

455-1 (1) 455 VALVE (1) 1/8 URETHANE TUBING ASSEMBLY (1) EACH 15, 18, 20, 21, 22, 23 AND 25 GUAGE 1/2" DISPOSABLE TIP (6) C/P TIPS (1) C/P TIP ADAPTER (1) MANUAL 455-2 (1) 455 VALVE (1) .095 TUBING ASSEMBLY (1) EACH 15, 18, 20, 21, 22, 23 AND 25 GUAGE 1/2" DISPOSABLE TIP (6) C/P TIPS (1) C/P TIP ADAPTER (1) MANUAL 455-3 (1) 455 VALVE (1) .066 TUBING ASSEMBLY (1) EACH 15, 18, 20, 21, 22, 23 AND 25 GUAGE 1/2" DISPOSABLE TIP (6) C/P TIPS (1) C/P TIP ADAPTER (1) MANUAL

The 455 valve works in conjunction with the 455.775.826 controller.

© Drawbridge Leaders, Inc. 2006-8