Description

A check valve, also known as a one-way valve, is a device that allows fluid to flow in only one direction. The primary purpose of a check valve is to prevent backflow into the system. Check valves are a cheap, effective and simple solution to a potential problem. Backflow can cause problems if the water flow is contaminated, thereby contaminating the upstream media. For example, a sewer line will have a check valve to ensure that waste can leave but not re-enter the system from which it originated.

There are a variety of sizes, designs and materials to ensure that there is a check valve for every application. A two-way check valve is commonly used. Check valves with vents are used as three-way check valves to protect incoming water from contamination caused by backflow. Atmospheric vents allow purified water to be discharged to an existing drain. An arrow on the bonnet indicates the direction of flow through the check valve.

Specifications:

Size DN50—DN600

Nominal Pressure PN10/PN16

Working Temperature -10°C~120°C

Suitable Medium Chemicals,air,water,steam,oil, acids,salts,etc

Performance:

Standard: