Cole Parmer Spex VapLock 3-Way Pinch Valve One Port Normally Open Other Port Normally Closed Silicone Tubing

Solenoid-operated pinch valves open and close tubing to achieve controlled fluid flow. Since tubing is the only wetted part there is no dead volume and no obstruction in the flow path. Simply change the tubing when needed. Two-way valves are available in normally open or normally closed configurations. Three-way valves feature both a normally open and a normally closed flow path, which are operated simultaneously.

Designed for durability, valves last for a minimum 2 million open-and-close cycles and can remain in the fully energized state indefinitely without damage to the valve or tubing. PPS plunger and ASA/PC body material provide chemical resistance.

Valves are available with either C-Flex or platinum-cured silicone tubing. Both withstand the rigors of usage with pinch valves, will not stick even after prolonged closure, and are easily sterilizable. Tubing are rated for over 300,000 cycles. All two-way valves come with one 12"L tubing already in place. Three-way valves include two 6"L tubing joined by a Y connector.

†Low noise models 12021-25 and 12021-30 reduce the valve noise level from about 72 dB (A) to less than 50 dB (A).
‡Model 12021-40 features threaded mounting holes on the bottom of the valve body.