New Type Wafer Concentric Butterfly Valve

New Type Wafer Concentric Butterfly Valve

Basic information
Basic information
New Type Wafer Concentric Butterfly Valve can be used as adjusting and intercepting equipment in a variety of corrosive operating conditions.
Features
Features
1. Body jaw adapts to 10bar and 16bar bolt fixation;
2. Special flange for butterfly valve is not required during installation;
3. Disc for spraying nylon, corrosion resistant;
4. No pin structure, no corrosion point.
Principle
Principle
Because large diameter may have too much torque, the large diameter is recommended to use the turbine for easier manual operation.
Installation and Commissioning
Installation and Commissioning
Clean the sealing cover of butterfly valve and dirt in the pipeline, the flange mouth on the pipeline must be right, pressure the rubber sealing ring of concentric butterfly valve, there is no need to use the sealing washer, it is forbidden to install the concentric butterfly valve and weld the flange, otherwise it will burn the rubber sealing ring of butterfly valve. For specific use, please consult ZhengFeng Valve Group.

Part

Material

Standard

Body

Ductile Iron

EN 1563/DIN 1693

Disc

Ductile Iron+Nylon

EN 1563/ISO 4633

Stem

Stainless Steel 431

EN10088-1/ASTM A959

Handle

Ductile Iron

EN 1563/DIN 1693

Seat

EPDM

ISO 4633

Bushing

CuZn39Pb1 / C37000

EN12167/ASTM B135

For the materials options not listed, consult factory.

ZhengFeng manufactures valves in more than 50 different alloys.

Product scope, Standards & Materials
Size Range: 2"~48"
Pressure Rating: 10bar ~ 25bar
Face to Face Dimensions: EN 558-2008
Flange End Dimension: EN1092-2, ISO 7005-2
Coating: Fusion Bonded Epoxy Coating
Inspection and Test: EN 1074-1 and 2, EN 12266

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