Positive Safety Swing Check Valves

A Emergency Shut-off Swing Check Valve (ESOV) is a crucial component used to quickly and effectively stop the flow of gas, liquid, or vapor in emergencies or hazardous situations.

Description

What are Positive Safety Swing Check Valves?

Positive Safety Swing Check Valves are a type of check valve that is designed to prioritize safety. These valves are equipped with accessories that ensure reliable and secure operation in various applications. They incorporate a swing-type disc that allows flow in one direction while preventing backflow in the opposite direction.

The “positive safety” aspect refers to additional safety mechanisms implemented in these valves. For example, some positive safety swing check valves are equipped with a secondary closing mechanism, such as a spring or weighted lever, in addition to the primary swing action of the disc. This ensures a more secure and fail-safe closure, especially in critical situations.

Positive Safety Swing Check Valves are commonly used in industries where preventing backflow is crucial, such as in water and wastewater treatment plants, industrial processes, and oil and gas facilities. These valves provide peace of mind by offering enhanced safety features and reliable performance to protect equipment and prevent any potential hazards.

What are Emergency Shut-off Swing Check Valve (ESOV)?

ESOV series of ANSI flanged swing-check valves with fusible links are created to offer a straightforward and efficient way of closing during emergencies or hazardous situations.

These valves have an external spring load and remain open thanks to the fire-sensitive fusible link. When the link melts due to fire or high temperatures, the valve automatically closes. The external lever rotates the hinge pin, causing the disc to redirect the flow of liquid, gas, or vapor.

We offer Swing Check Emergency Shut-Off Valves that have a Spring Assisted Swing Check with Fusible Link. Our ESOV series valves are available with 150# and 300# ANSI Flanged Connections in sizes ranging from 2″ to 16″.

Sizes & End Connections

150# ANSI Flanged: 2″ to 16″

300# ANSI Flanged: 2″ to 16″