DuPont P1V SV804 Flange Insert Check Valve 1 Inch

DuPont P1V SV804 Flange Insert Check Valve, 1 inch, is a stainless‑steel inline valve designed to mount between ANSI Class 150/300 flanges, delivering unidirectional flow and preventing backflow in process lines. The valve is part of Check‑All’s Flange Insert family and features a 1/2‑psi cracking‑pressure spring with a 316 stainless steel body, providing robust service in demanding piping environments. It can be installed between mating flanges in either horizontal or vertical orientations with no modifications to the existing pipe, and is manufactured in the USA. Note that seating options vary by model, with PTFE seating specified for certain 1″ F6 configurations in this family.