Holders & Accessories

Excess Flow Valve

Prevents pressure build up in the interspace between relief devices.

Excess flow valves are designed for use with double rupture disc or rupture disc and relief valve combinations. As rupture discs are pressure differential devices it is essential to prevent pressure build-up in the interspace between relief devices. Elfab’s Excess Flow Valves provide the essential facility for preventing unacceptable build up of pressure in the space between the safety valve and the rupture disc.

The Excess Flow Valve closes when exposed to high flow rate, as occurs when a rupture disc bursts. Elfab’s Excess Flow Valves are manufactured in stainless Steel and are available in 1/4" or 1/2" connection and pressure gauge options.

• Essential protection
• Robust Stainless Steel construction
• Rapid shut off
• Pressure guages are sold separately