Our replacement Back Pressure Regulator (BPR) Cartridge operates as an easy to use, replaceable component for our BPR systems. We constructed this cartridge from PEEK, Tefzel (EFTE), PCTFE and included a gold plated stainless steel spring delivering consistent, reliable usage. It is conveniently designed to be used with any of our standard BRP Holders and creates a back pressure of 750 psi (34 bar). It comes with a black body and blue end cap.