Wafer Concentric Butterfly Valve with Post Indicator

Wafer Concentric Butterfly Valve with Post Indicator

Basic information
Basic information
This valve can be used to open or close the medium in the fluid pipe and is one of the accessories of the automatic sprinkler system in fire engineering.
Features
Features
1. Directly and clearly reflect the valve switch status;
2. Easy to open and seal;
3. Good quality rubber, long life;
4. Simple structure and convenient maintenance.
Principle
Principle
The wafer concentric butterfly valve with position indicator is the connection between the butterfly valve and the position indicator. The position indicator is added with the electric switch box on the basis of the manual device of the valve. There is a micro switch in both open and close directions. When the valve is "closed" or "open" in place, an electrical signal can be provided. The electrical switch box is fully sealed, and the joint part of the shell is provided with a sealing ring, so it can be used outdoors.
Installation and Commissioning
Installation and Commissioning
Clean the inner cavity of the valve before installation. Impurity and foreign matter are not allowed on the sealing ring and disc. Close the disc before cleaning to avoid damaging the sealing ring. For specific use, please consult ZhengFeng Valve Group.

Part

Material

Standard

Body

Ductile Iron

EN 1563/DIN 1693

Disc

Ductile Iron

EN 1563/DIN 1693

Seat

EPDM / NBR

ISO 4633

Stem

Stainless Steel 431

EN10088-1/ASTM A959

Position Indicator

PVC

ISO 4633

Worm Actuator

Ductile Iron

EN 1563/DIN 1693

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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