Excess Flow Valves

Excess Flow valves, also referred to as velocity checks, emergency shutdown devices, seismic valves, shutdown valves, surge preventers, earthquake valves, and line rupture valves, are designed to automatically close in the event of a sudden flow surge. These in-line valves allow pressurized gas or liquid to flow in either direction. They are spring-loaded shut-off valves that close when the flow surpasses a predetermined rate, as indicated on the valve. Each valve's closing flow rate is determined by specific conditions. Our 2000 series Excess Flow valves are versatile and can be used with various fluids and processes, including LP gas, butane, anhydrous ammonia, anhydrous chlorine, nitrogen air, water, and more. These valves come in a broad range of pressure classes, materials, flange designs, and end connections. All valves undergo testing in our certified flow laboratory, with test certificates and performance graphs provided by our advanced data-acquisition system, Total Valve Live.

To schedule a brief presentation that can be held at your location or via Webinar, please contact us at Sales@totalvalve.com.

Series

• 2100 Between Flanges for Bypass Resetting
• 2400 Tank Applications
• 2600 Externally Adjustable - Fire Safe API 6F Rated
• Note: All valves are available by different pressure classes. We will custom design and manufacture an excess flow valve to meet customer and federal requirements. Dimensions shown are for standard design and are subject to change without notice. See our product catalog for individual valve specifications.