Tilting Check Valve with Counterweight & Hydraulic Damper

Size Range: DN100-DN2000

Pressure: PN10/16

Body Materials: Ductile Iron QT450



  • Provide material report

    QT450-10 or WCB valve body,the chemical composition and mechanical properties meet the the national standard, material report can be provided.

  • Processed by precision CNC machine

    All parts are processed by precision CNC machine tools to ensure product accuracy.

  • Prevent destructive water hammer

    Excellent performance of slow closing system, not affected by the medium in the pipeline. The valve disc closes quickly first and then slowly closes to prevent destructive water hammer.

  • Smooth opening and closing

    Rubber seals or stainless steel hard seals, smooth opening and closing, no vibration, no noise, valve discs and other parts can also be selected according to working conditions.

  • Low friction and torque

    Valve shaft is supported by self-lubricating sleeve bearings to reduce friction and torque.

  • Double detection

    Each valve will be inspected for shell and seal pressure before leaving factory. 250μm thickness Akzo epoxy coating.


Tilting Check Valve with Counterweight & Hydraulic Damper is mainly used at the outlet of pumps in industrial water supply and sewage treatment plants, prevent backflow of media in the pipe network and automatically eliminate destructive water hammer,to ensure that the pump and pipeline are not damaged.  Small volume, simple structure, small fluid resistance, stable operation, and good cushioning performance,especially suitable for large size pipeline systems.


Parameter Information:
1. Executive standard:
Name Design and manufacture Face to face Length End Flange  Pressure Test 
GB/T 12238 GB/T 12221 GB/T 17241.6 GB/T 13927

2. Material of Main Parts:
Name 17-Body 13-Disc 4-Stem 14-Seat
Material QT450-10 QT450-10 2Cr13 EPDM

Size   PN10
DN NPT L D1 n-d
100 4'' 190 180 8-φ19
125 5'' 200 210 8-φ19
150 6'' 210 240 8-φ23
200 8'' 230 295 8-φ23
250 10'' 250 350 12-φ23
300 12'' 270 400 12-φ23
350 14'' 290 460 16-φ23
400 16'' 310 515 16-φ28
450 18'' 330 565 20-φ28
500 20'' 350 620 20-φ28
600 24'' 390 725 20-φ31
700 28'' 430 840 24-φ31
800 32'' 470 950 24-φ34
900 36'' 510 1050 28-φ34
1000 40'' 550 1160 28-φ37
1200 48'' 630 1380 32-φ40
1400 56'' 710 1590 36-φ43
1600 64'' 790 1820 40-φ49
1800 72'' 870 2020 44-φ49
2000 80'' 950 2230 48-φ49


Check valves, globe valves, ball valves, filters, rubber joints, etc. are commonly used pipe accessories in fluid pipelines, with functions such as cut-off, regulation, diversion, prevention of backflow, pressure regulation, diversion, or pressure relief. It is commonly used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metals, and radioactive media.


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


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