Sanitary Check Valves Working Principle and Notifications

LAKE FOREST, Calif. - April 17, 2018 - PRLog -- A sanitary check valve is a valve that normally allows fluid to flow in one direction. In addition, it has other hygiene requirements. Check valves are two-way valves, which means they have two openings in the body, one for the fluid to enter and the other for the liquid to come out. There are different types of check valves used in a wide variety of applications. Check valves are often part of everyday household items.

The sanitary check valve opens when the fluid flows forward and closes when the fluid is reversed. These are mainly automatic valves, whose main function is to prevent the backflow of fluids as well as to prevent the inversion of the pump and the drive motor and the release of fluid from the tank. It is also used for safety protection in auxiliary systems where the pressure can exceed the system pressure.

Ball check valves are usually very small, simple and economical. They are commonly used in liquid dispensers or minipump gel, spray devices, some rubber bulbs to pump air, etc., manual air pumps and some other pumps, and rechargeable dispensing syringes. Although bullets are usually made of metal, they can be made of other materials; in some cases, it specializes in highly durable or inert materials, such as sapphire.

High-pressure HPLC pumps and similar applications commonly use small inlet and outlet ball check valves with ruby ​​balls and sapphire or ruby ​​ball and seat seats, both for hardness and chemical resistance. After prolonged use, such check valves may eventually wear out or the seat may develop a crack requiring replacement. Therefore, such sanitary check valves are made to be replaceable, sometimes placed in a small, airtight plastic body within a metal fitting which can withstand high pressure and which is screwed into the head of the pump.

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