Swagelok SS-RL3M4-F4 Low Pressure Relief Valve

Swagelok SS-RL3M4-F4 is a stainless steel, low‑pressure proportional relief valve built for precise over‑pressure protection in small‑bore and instrumentation systems. The valve features 1/4 in. MNPT x 1/4 in. FNPT end connections and a 316 stainless steel body, delivering corrosion resistance and compatibility with Swagelok tubing fittings and standard piping. As part of Swagelok’s RL3 series, it offers external set‑pressure adjustments, enabling you to tailor relief levels from outside the line for safe, repeatable operation across a variety of low‑pressure applications. It is designed for a variety of applications where proportional relief is required to maintain system pressure within safe limits, and its MNPT to FNPT configuration supports straightforward installation in compact manifolds and process lines.