6 10 Wafer Style Butterfly Valve / Food Grade Exhaust Butterfly Valve

6 10 Wafer Style Butterfly Valve / Food Grade Exhaust Butterfly Valve

Wafer Style Butterfly Valve introduction:

Double  end flanged resilient sealing butterfly valve is operated by the disc rotating form 0° to 90°, can be applied to cut off or regulate the flow of medium.

Wafer Style Butterfly Valve is a type of flow control device, typically used to regulate a fluid flowing through a section of pipe.
The valve is similar in operation to a ball valve. A flat circular plate is positioned in the center of the pipe.
The plate has a rod through it connected to an actuator on the outside of the valve. Rotating the actuator turns the
plate either parallel or perpendicular to the flow. Unlike a ball valve, the plate is always present within the flow,
therefore a pressure drop is always induced in the flow regardless of valve position.

Wafer Style Butterfly Valve Standard

Design: EN 593, EN 1074-1&2; IS 13095 Double Eccentric DoubleFlanged Butterfly Valve;

Face to Face in acc. EN 558 / ISO 5752 series 14;

Flange Drilling in acc. to EN 1092-2;

Worm Gear Box with Hand Wheel;

ISO 5211 Mounting Flange standard;

Testing in acc. EN 12266-1;

Fusion Bonded Non-toxic Epoxy Powder Coating w/o NSF61/WRAS

(DN250 10inch butterfly valve)

face to face length: 10 inch valve length be 8inch(203mm).

Body Ductile Iron w/Fusion Bonded Epoxy ASTM A536 65-45-12

Disc Ductile Iron w/316SS Edge w/Fusion Bonded Epoxy ASTM A536 65-45-12

Seat NBR Vulcanized on Body (Buna-N)

Shaft Type 316 Stn. Stl ASTM A276 Ty316

Packing V-Ring NBR (Buna-N)

Flanges ANSI B 16.1 Class 125

Wafer Style Butterfly Valve Features: 

⊙ Professional design

When initiating the rotary opening movement the disc is off-seated after only a few 

degree of opening movement and there is very little wear and tear between seat ring and disc.

⊙ Excellent corrosion protection

Inside electrostatic epoxy resin power coating or vitreous enamel(upon request), outside electrostatic

 epoxy resin power coating.

⊙ Reliable health nature 

Epoxy resin power is up to the health standard.        

Mail part & material 

Body, Disc: GGG50 with internal and external epoxy resin coating 

Stems: 1Cr17Ni12Mo2Ti, Stainless steel min.13%Cr 

Bushing :Bronze CuAI10Fe3

Seal ring, O-ring: NBR, EPDM or FPM 

Technical Specification

- Nominal diameter:150～2600mm        

- Nominal pressure:1.0/1.6/2.5Mpa
- Strength testing pressure:1.5/2.4/3.75Mpa

- Sealing testing pressure:1.1/1.76/2.75Mpa

Executive standard

Main external and connection dimension

1.0MPa                                                  mm

1.6MPa                                              mm 

2.5MPa                                              mm

Wafer Style Butterfly Valve Advantages:

1) Small in size and light in weight and maintaince.
   It can be mounted whereever needed.

2) Simple, compact structure, quick 90 degree on-off operation.

3) Disc has two-way bearing, perfect seal, without leakage under 
   the pressure test.