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Wafer Type Butterfly Valve

Wafer type butterfly valve is one butterfly valve with simple structure, small size and light weight. It is mainly composed of body, disc, rotating shaft, seat and transmission device (hand lever, worm gearbox, electric device). Its operation is easy, only rotating 90° could achieve quickly open and close. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is very small. Such it has better flow control characteristics.

1. Standard

Design & manufacturing

EN593

Face to face

EN558-1

Inspection & testing

EN12266-1

2.Technical Specification

Size

DN50-600

Working pressure

PN10 / PN16

Applicable temperature

0℃~80℃

Operation

Hand lever / Gearbox /

Electric actuator

3. Main parts material

Part Name

Material

Body

Ductile Iron

Disc

Ductile Iron/SS304/SS316

Stem

SS420/SS410/SS416

Seat

EPDM

Fasteners

Carbon steel/Stainless steel

4. Features

  • Simple and compact construction
  • Small in size and light in weight
  • Quick 90° on-off operation, low torque
  • Good sealing capability, no leakage


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