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Quick Details

  • Standard or Nonstandard: Standard
  • Structure: Check
  • Pressure: Low Pressure
  • Power: Hydraulic
  • Material: Casting
  • Temperature of Media: Medium Temperature
  • Media: Water
  • Port Size: DN40~DN600
  • Place of Origin: Shandong, China (Mainland)
  • Model Number: CV70
  • Brand Name: DS
  • Application: General
  • Size range: DN40-DN600mm
  • Working pressure: PN10 and PN16
  • Applicable temperature: From -40 to +230° C
  • Flange drilling according: as per your require

Packaging & Delivery

Packaging Details Inner packing:Plastic bags, Outer packing:Cartons and wooden case
Delivery Time 30-45 days



Main Features :

DONGSHENG Dual Flap Wafer Check Valve is designed to operate with the minimum of flow restriction.


The twin spring loaded half disc operate with the pipeline flow and reseal back against the rubber disc seating providing a positive shut off against any back flow . The resilient seating prevent a slamming action .


Check Valves offer greater flexibility and low cost in most piping systems and moreover , of its light weight , it is so convenient to install and has smaller face to face dimension than conventional swing check valve .


These valves can be supplied to match the international standards of flange (DIN,ANSI,JIS & BS) .


DongSheng check valves when compared with order traditional isolating valve such as swing check valve offer the following advantages:

Low purchase cost

Compact design

Non-slam principle of operation

Light weight

Easy installation

Good flow characteristic and less pressure drop

Suitable for horizontal and vertical up flow


Typical Applications:


Heating air-conditioning pipe lines
High frequency lines
Fire extinguishing system
Vessel pipelines
Iron and steel industry
Mineral, oil industry
Wood working, pulp and paper industry
Textile industry
Water and condensate lines


Applicable fluids:


Water , warm water , sea water , air and weak acid








Cast iron GG25 / Stainless Steel



AISI 316 / chrome coated GGG40


Resilient seat



Hinge pin

AISI 316



AISI 304


Retainer screw

Carbon steel


Disc bearing






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