Introduction to several different valves

Bundor Valve answers your questions.The following sections describe the working principles and functions of several different common valves.

1. The check valve is a valve that automatically opens and closes the valve stem. Its function in the system is to prevent the fluid from flowing backwards.

The check valve is divided into a lift type and a swing type according to the structure. When the medium is downstream, the valve disc of the lift check valve rises. When the medium is reversed, the valve disc closes itself, preventing backflow of fluid. The check valve has good sealing performance and simple structure, but has a large resistance to fluid. The rocker of the swing check valve rotates around the sealing surface. When the medium is flowing downstream, the rocker is opened, and when the medium is reversed, the rocker is closed by itself to prevent backflow of fluid. This check valve is generally installed on a horizontal pipe, and its flow resistance is small, but the sealing performance is worse than that of the lift check valve.

2.The pressure reducing valve is a valve that automatically maintains the outlet pressure by adjusting the inlet pressure to a desired outlet pressure and relying on the energy of the medium itself. The action of the pressure reducing valve is mainly to change the gap between the valve and the valve seat through the sensitive components such as diaphragm, spring, piston, etc., so that steam, oil, air, etc. can achieve self-decompression.

3. The safety valve protects the pipes and vessels subjected to internal pressure. When the pressure of the medium in the protected system rises above the specified value (that is, the seat pressure of the safety valve), the safety valve opens itself and discharges part of the medium to prevent overpressure. When the medium pressure drops to the specified value (that is, the return pressure of the safety valve), the safety valve automatically closes.    

4. The trap is an automatic valve. It is mainly used on steam heat exchange equipment or pipes to remove condensate while preventing steam from flowing out.

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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