Swagelok SS-DLVC04 High Pressure Diaphragm Valve

Swagelok SS-DLVC04 High Pressure Diaphragm Valve is a stainless‑steel, diaphragm‑sealed valve designed for ultrahigh-purity, high‑pressure service in gas and liquid lines. This 1/4 in. valve uses face‑seal (metal gasket) ends compatible with Swagelok VCR fittings and a lever‑style manual actuator with a green handle, delivering precise, bubble‑tight shutoff in clean environments. The body is made of 316L stainless steel with a PTFE seat and a PTFE-coated 316 stainless steel gasket to minimize particle generation; the flow path is straight through (two‑way), and the valve offers a Cv of 0.14 for consistent flow control. Maximum room‑temperature pressure rating is 3500 psig at 70°F (241 bar at 20°C), with a maximum operating temperature of 250°F (121°C) at up to 2800 psig, and a surface finish of 20 µin Ra. This valve is part of Swagelok’s high‑purity, high‑pressure diaphragm valve family (DL/DS series), engineered for demanding environments such as ultraclean gas and liquid lines where reliability and repeatable shutoff are critical.