Flapper Check Valve

Flapper Check Valve

Basic information
Basic information
This valve can be installed at the water outlet of the pump or the water outlet pipe to prevent backflow of the medium.
Features
Features
1. Switch can be up to 100,000 times;
2. Full flow area, low flow resistance;
3. Less likely to accumulate debris;
4. Simple structure and convenient maintenance.
Principle
Principle
The sealing ring of this valve adopts the tilting design, and the closing time is short, which can reduce the water hammer pressure.
Installation and Commissioning
Installation and Commissioning
This valve can be installed in sewage. For specific use, please consult ZhengFeng Valve Group.

Part

Material

Standard

Body

Ductile Iron

EN 1563/DIN 1693

Bonnet

Ductile Iron

EN 1563/DIN 1693

Disc

Ductile Iron + EPDM / NBR

EN 1563/ISO 4633

Seal

EPDM / NBR

ISO 4633

Nuts

Stainless Steel 431

EN10088-1/ASTM A959

Bolts

Stainless Steel 431

EN10088-1/ASTM A959

For the materials options not listed, consult factory.

ZhengFeng manufactures valves in more than 50 different alloys.

Product scope, Standards & Materials
Size Range: 2"~24"
Pressure Rating: 10bar ~ 25bar
Face to Face Dimensions: AMSE B16.10, EN558-1
Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2
Coating: Fusion Bonded Epoxy Coating
Inspection and Test: ISO 5208 / EN 12226-2

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