Bi-directional metal sealing triple offset butterfly valve
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Bi-directional metal sealing triple offset butterfly valve

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Bi-directional metal sealing triple offset butterfly valve has features of corrosion resistance, high bi-direction sealing performance and long life application.

Characteristics:

1. Reasonal structure design, zero leakage sealing, small volume, light weight and easy operation.

2. Adopting double eccentric sealing structure, over close self-locking performance, quick and complete releasing contact of sealing trims to avoid scratch and elongate life span.

3. The sealing trims adopts acid-proof stainless steel, acid-proof stainless steel or stainless steel +PTFE and have corrosion resistance, high temperature resistance and wide use features.

4. The valve adopts half shaft, bridge style disc to ensure high stiffness, large flow area, small flow resistance and saving energe.

5. The valve may adopts horizantal or vertical installation free of medium direction.

Main part material:

Part name

Material

Valve body

GGG25,GGG40, 500-7,WCB,316

Valve shaft

420,316

Valve disc

GGG25,GGG40, 500-7,WCB,316

Sealing trims

410, CoCrW, SS321, SS304, PTFE

Applying standards:

General design complies with: MSS-67-2002, ANSI/AWWA C504, BS EN593-2004, DIN3354

Flange connecting complies with: ASME/ANSI B16.5-2003, ASME B16.47-2006, BS4504, DIN2532, DIN2533

Face to face length complies with: ASME B16.10-2000, BS EN558-2, DIN3202

Pressure testing complies with: API598-2004, EN 12266-1/2, DIN3230

Main technical parameter:

Nominal pressure(Mpa)

0.25

0.6

1

1.6

2.5

Nominal diameter(mm)

50-3000

50-3000

50-3000

50-3000

50-1000

Connecting style

Flange connection

Sealing test (Mpa)

0.275

0.66

1.1

1.76

2.75

Shell strength test(Mpa)

0.375

0.9

1.5

2.4

3.75

Applying medium

Water, oil, gas and corrosive medium

Applying temperature(0C)

(NBR)-29-80, (EPDM)-29-130, ( silicon rubber) -29-250

Driving style

Manual, worm gear, electricity, pneumatic, hydraulic



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