The M51 dome-loaded pressure maintaining valve provides precise upstream pressure control for high-flow and high-pressure applications. Its balanced valve design ensures stable regulation, even under fluctuating inlet pressures. With internal or external dome loading, it eliminates the need for a pilot regulator in gas applications. Built from stainless steel, it offers exceptional durability and corrosion resistance in demanding environments. The M51 supports liquid and gas media, with a maximum inlet pressure of 310 barg. Leak-tight sealing, helium leak testing, and multiple elastomer options enhance performance, making it ideal for compressors, aerospace ground support, and pump pressure control systems.

Key features

Dome-loaded pressure maintaining valve

Stainless steel body and dome

Internal/external dome loading

Outlet pressure: 0.5 – 310 barg

Inlet pressure: up to 310 barg

Leak-tight design with helium leak testing available

Compatible with NBR, FPM, and EPDM elastomers

High-flow design for efficient pressure management

Suitable for gases and liquids

Compact and robust construction