Industrial D2768C3904 Pressure Release Assembly

The Ross Controls D2768C3904 is a 27 Series inline, pilot‑operated check valve with an integrated pressure‑release function, designed for safety‑critical tooling and automation applications. This 2/2 pneumatic PO check valve features 3/8" NPT ports (Port 1 and Port 2) in an inline mounting configuration, a cast aluminum body, Buna‑N seals, and a poppet made from acetal and stainless steel for durability in filtered‑air systems; it is rated for an operating range of 30 to 150 psig (2 to 10 bar) with a Cv of 2.9. External dimensions are approximately 3.38" L × 2.38" W × 3.11" H and it weighs about 2.3 lb. The unit’s pressure‑release capability is provided as Manual Pressure Relief, it defaults to Normally Closed, and it is actuated by compressed air. Temperature ratings cover ambient and media temperatures from 40 to 175 °F (4 to 80 °C), and it supports safety requirements at Category 1 PL c with flow suitable for filtered air applications.