Wafer Type Dual Plate Check Valves are maintained open by the flow of fluid in the forward direction and are closed by back pressure of the fluid or by the weight of the closing mechanism or by a spring force. Available in Various designs and sizes. The range of these valves available from 50mm to massive units of 1600mm dia. All features put together make the valve as the most efficient & versatile design.

Brief Introduction:

Double disc check valves are mainly used for the pipelines which medium is one-way flow, only allowing medium to flow in one direction, in order to prevent accidents.

They are widely used in water source projects, urban water supply and drainage, sewage treatment, electric power,petroleum, petrochemical, heat supply and metallurgy industries etc.

Suitable medium include water, sewage, sea water, steam, air, foodstuff, oils, nitric acid, strong oxidizing medium and urea etc.

Structure Performance:
1.Structure length is short. 
2.Small volume, light weight. 
3.Unobstructed channel, small fluid resistance. 
4.Action is sensitive, sealed performance is good. 
5.Simple and compact structure, attractive appearance. 
6.Long using life and high reliability.

Design:
Built in Double-disc wafer swing check valve 
Retainerless 
Metal seal or rubber seal. 
DN15-DN1200, class150-2500

Product features 
To API594 
Face to face per ANSI B 16.10 
Flange ends dimension ANSI B 16.5/ANSI B 16.47 
Final inspection tests to API598.

Shanghai Datian Valve Pipe Engineering Co.,Ltd.

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