Polyethylene for chemical lines. Step-down barb design allows for use with 1/4", 3/8" or 1/2" tubing. Designed for one-way flow of product and positive seal against flow in the opposite direction.

Model 100-11P features a stainless spring and ball with EPDM O-ring.

Model 100-11PCV features a Teflon ball, hasteloy spring and Viton O-ring.

Ceramic Weights for above valves: #113 Weight fits over 1/4" or 3/8" tubing. #114 Weight fits inside 1/2" tubing.