PN16 DN50 Rubber Disc Swing Check Valve (Rubber Lined)

Short Description:

UNIQUE Rubber check valve consists of valve body, bonnet, disc and spring.

It is mainly used in the pipeline outlet of the water supply and drainage system, petroleum, chemical industry and other industrial sectors.

Due to the slant design of the sealing ring of the rubber check valve, the closing time is short and the water hammer pressure can be reduced.

The disc is made of butyronitrile rubber and steel plate through high temperature.

It is easy to be washed and sealed.

The product structure is simple, maintenance, maintenance and transportation are convenient.

The dual-plate check valve opening and closing member is opened or closed by the medium flow and the force to prevent the back flow of the valve from being called a check valve. Check valves are automatic valves, mainly used on pipes with one-way flow of media, allowing only the media to flow in one direction to prevent accidents.

The dual-plate check valve is used for pure pipelines and industrial, environmental, water treatment, high-rise building water supply and drainage pipelines to prevent reverse flow of media. The check valve adopts a clip type, the butterfly plate has two semicircles, and the spring is forcibly reset, and the sealing surface can be a body wear welding wear material or a lining rubber, and the utility model has wide application range and reliable sealing.

Nominal Diameter: 1-1/2″ – 24″(DN40 – DN600)

Pressure range: Class150- Class300 (PN16- PN40)

Working temperature: -196℃ - +560℃

Body material: Cast Iron, Ductile Iron, Carbon steel, LCB, LCC, Stainless steel,

Supper Duplex Steel (F51/F55), 4A, 5A, Alloy steel, Aluminum Bronze.


Design and manufacture: API594, API 6D

Face to face: API594, API6D, DIN3202

End Connection: ANSI B16.5, DIN2543-2548, ASME B16.4, API605

Inspection and test: API598

Product Detail

Product Tags

Technical conditions and materials:

·Face-to-face sizes conform to EN558-1, basic series 48(DIN 3202 F6) soft sealing conforms to EN 12334
·Diaphragm closing, rapid and soundless
·Diaphragm material NBR EPDM
·Final inspection conforms to EN12266
·Applicable size: DN40~DN500
·Applicable temperature: -20~100°C
·Valve body: cast iron/nodular cast iron
·Valve disc: EPDM wrapped


1. Swing check valve disc 90°C action provides better non-return function for clean fluid.
2. Stainless steel or bronze internals, high abrasion resistance, good sealing performance and strong corrosion resistance
3. Rubber disc swing check valve is on-off in 45°C, rapid and soundless, offering better on-return function for fluid with many foreign substances.
4. Rubber disc swing check valve is wrapped by EPDM or other materials suitable for different mediums.
5. The surface and internal of valve body are with epoxy resin corrosion-proof coating

  • Previous:
  • Next:

  • Write your message here and send it to us