The role of check valve and installation precautions

The check valve is mainly used in the pump water supply system to prevent the impact of the high-pressure water backflow on the pump impeller.

The check valve is an automatic valve that relies on the pressure of the medium flowing to achieve the opening and closing of the valve flap. The check valve is mainly used to prevent the medium from flowing back and backflow, so it is also called a check valve, a one-way valve and so on. Check valve is a kind of automatic valve, its function is to prevent the back flow of the medium, prevent the pump and drive motor from reversing, as well as the release of the container medium. This article will explain the function of the check valve and the precautions for installation.

Check valve function

The check valve is mainly used in the pump water supply system to prevent the impact of the high-pressure water backflow on the pump impeller. When the water pump in the water supply system of the water pump suddenly stops running, the pressure in the pump disappears instantly, and the high-pressure water connected to the outlet of the water pump will flow back to the water pump in the reverse direction. After the non-return valve installed at the outlet of the water pump has no medium pressure, it will be closed immediately to prevent the high-pressure water from flowing back to the pump.

Imagine if there is no check valve installed at the outlet of the water pump, high-pressure water flows back to the water pump in the reverse direction, and the impeller of the water pump reverses under the impact of the high-pressure water. Under the impact of high-pressure water, the impeller may loosen or damage the impeller or other parts in a serious situation. When the pump runs again, the loose or damaged impeller can also fly out, bringing huge safety hazards to the production work.

The check valve in the hot water system is used to prevent hot water from flowing back into the pipeline. If the check valve is not installed, the hot water will flow back, which may scald the pipeline and even hurt people.

Precautions for check valve installation

1. The check valve is a one-way valve, so the installation position, height, and direction of inlet and outlet must meet the design requirements, and the direction of medium flow should be consistent with the direction of the arrow marked on the valve body.

2. Before installing the check valve, check the appearance. The nameplate of the valve should meet the requirements of the current national standard "General Valve Marking" GB 12220. It can be used after all standards are qualified.

3. Don't let the check valve bear weight in the pipeline, especially the large check valve, which should have independent support and not be affected by the pressure generated by the pipeline.

Pre: What kind of valve is good for heating pipeline

Next：Back To List

EMAIL US

Email Newsletter

Sign up for our email newsletters

HOT PRODUCTS

NEWS FEATURE

The engineering energy-saving valve market trend

info@bundorvalve.com +86 150 0225 9955

Contact us now if you have any questions about our company and products.We will retain your information completely private.

FAQ

Who should we contact if there is after-sale problem?

You can send mail to info@bundorvalve.com or call us directly to Ms.Shirley. Business scopes spreads to middle China,West China,East China,South China and 76 countries &areas all over the world. We are familiar with all types of enterprises development strategy. Through reliable products and perfect services, the brand of Bundor has won extensive praise from customers.

What certificated does the factory have?

Bundor has 117 products patents and passes CE, CU-TR, API, WRAS, ISO9007, ISO18001, ISO14001, AAA credit grade certificate. Strictly in accordance with ISO, API, JIS, DIN and other standards for valve production, the factory has a perfect enterprise standardization system, has more than 80 sets of high-precision mechanical equipment and quality testing equipment. Can provide more than 10000 kinds of valve models, with a perfect computer system, with independent product research and development capabilities.

Which port is the nearest port from factory?

Bundor valve is located in jinan area, tianjin city, is a collection of scientific research, design, production, sales and after-sales service as one of the professional valve manufacturers, its main export port is tianjin port. Tianjin port is an important comprehensive port and foreign trade port in north China. After the order is confirmed, production can be arranged in 24 hours to ensure the delivery time. Bundor valve always adhere to science and technology and quality peers, dare to innovate, the pursuit of excellence.

What’s the payment terms?

T/T, L/C, D/P D/A, PayPal, Western Union, Cash, Escrow are all allowed. Bundor valve has a set of perfect international trade system. From international trade marketing promotion to international trade negotiations, the group's international trade market of Bundor has been developing steadily in developing countries and regions such as Asia, Africa and Latin America, and has successfully opened markets in developed countries and regions such as Europe and America.

Founded in 1990s, Bundor is an experienced manufacturing and trading combo specialized in the research & development, production and sales of Butterfly valve, gate valve, check valve, globe valve and other valves. 26 years adhering to the principle of manufacturing process of competent valve fittings,the control of valve manufacturing throughout all the production processes, correctly understand customer requirements, and commit to provide products that ensure customer satisfaction.Our team