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For use in fresh or salt water with a minimum of head loss, these PVC swing check valves are identical to our white PVC swing check valves, only clear. They’re completely nonmetallic and use no springs. They’re pressure rated up to 100 psi and mount both horizontally and vertically. They have a full-flow design with a Buna-N seal and hinge (slip x slip). Made in USA.
Not recommended for use with air.