Check valve definition

Typically the check valve is designed for and can therefore be specified for a specific cracking pressure. The LNG check valve has to comply with the test procedures for the Class 5 . Definition of a check valve. The bodies (external shells) of most check valves are made of plastic or metal.

English dictionary definition of check valve.

A ball check valve uses a free-floating or spring loaded ball resting in a seat . A valve that permits flow of liquid through a hose or pipe in one direction but prevents a return flow. Uses include the prevention of backflow on uphill hose lays, . There are various types of . One of the most common uses of a swing check valve is the flapper valve in a flush-toilet mechanism. This allows water to enter from the bottom . Water Heater Rescue glossary of terms: Spring check valve definition.

Stop check valves are vital to several industries to protect boilers and other. That means less potential for erosive damage to the valve, which . This site uses cookies and similar technologies. When fluid is drawn in, the ball . If you do not change your browser settings, . Check Valve , In-line, Female Port. Swing check valves , as the name implies, also uses a swinging disc to allow or block flow.

The difference between the two is in the body design . For example, check valves can operate even when a facility loses power or when a device is off. This means they can keep the flow rate and direction steady so . The block positive direction is from port A to port B. Wafer check valves have a solid thermoplastic body with a very thin wafer profile that makes them an ideal check valve for applications that require valves with . DOUBLE CHECK VALVE meaning - DOUBLE CHECK VALVE definition - DOUBLE CHECK VALVE. These types of valves allow media flow in one direction only. A check valve is a backflow prevention device: it allows flow in only one direction.

Water hammer is a hydraulic phenomenon that can cause serious damage to your pumping system.

Oftentimes, a check valve is to blame. They are also known as non-return valves.