Jamieson Equipment Co. Inc. distributes pinch valves manufactured by WAM Group Inc.. Featuring an operating pressure of 4 bar, the valves are used primarily to arrest product flow in pneumatic conveying lines, including powders, granules, fibers and liquids. The valves have control pressure of maximum 6 bar, and maximum differential pressure of 1.5 to 2 bar depending on sleeve properties.

Valtrorc International manufactures pinch valves in single or multiple tube configurations. Available in normally closed, normally open, or closed open designs, the valves feature operating pressures up to 30 psig, and outer diameter tubing from 1/16" to 5/16" or 3/32" to 1/4".