Purpose 
This valve is used mainly for water supply and drainage system and can be set on the pump outlet to prevent the pump from getting harmed by the medium back flow.It can also be set on the mouth of a water outlet pipe to prevent the medium from backflow.
Features
Simple structure,reliable performance,long durable,open-close times can be up to over million ones,suitable for sewage.

Executive standard
Size of flange:DIN3352
Face to face Length :DIN3202-F6/ISO5752
​​​​​​​Flange Connection:DIN2501/DIN2532/EN1092
Test and inspection standard:DIN3230/ISO5208
Performance parameters:
DN 40-600 mm
PN 1.0----1.6  MPa
Suitable temperatur 100 C max
Media Water, gas, oil.
Main Parts Material
Body,Bonnet,DISC:Cast Iron
Seat ring:Brass

Technical Datesheet:

Dimensions