Sirr0und ProLine 1/2″ Pvc Check Valve PVC Construction, stainless steel spring loaded PVC poppet with resilient neoprene seal. Rated at 200 P.S.I. at 72 deg. F. (not for use with compressed air). Thread ends comply with ANSI B2.1. Packaged 1 per box. Import. MPN# 101-103 SKU# 430420UPC# 32888011038