Double Flange Type Butterfly Valve
Double flange butterfly valve
Area of application
Marine industry, Water supply & drainage, fire fighting, shipbuilding, water treatment and other systems
Data sheet of Double flange Butterfly valve
| Type: | Double flanged |
|---|---|
| Size & Connections: | DN50 to D1200 |
| Medium: | Air, Inert Gas, Oil, Seawater, Waste water, Water |
| Materials: |
Cast Iron / Ductile Iron/ Carbon Steel / Stainless Steel / Alu Bronze |
| Pressure Rating: | PN10, PN16 |
| Temperature: | -30°C to 200°C |
| Seat/Lining: |
Replaceable / Bonded vulcanized Liner NBR/EPDM/VITON, PTFE/PFA full lined |
| Certificates & Approvals: |
DNV-GL, Lloyds, DNV, ABS, BV Type Approval 3.1 & 3.2 Cert (on request) |
Standards
- Design and Manufacture Conform to EN 593、 API609
- Flange dimensions Conform to EN 1092-2 PN10
- Face to Face dimensions Conform to EN558 series
- Topwork’s dimensions Conform to ISO5211
- Testing Conform to API598、EN12266-1
Material of Parts
| Part name | Material |
|---|---|
| Body |
ASTM A536 65-45-12/ASTM A126 B EN-JL 1040 (GG-25) EN-JS 1030 (GGG-40) EN-JS 1049 (GGG 40.3) Stainless steel (1.4408) Alu-Bronze |
| Disc / Plate |
DI+NI,CF8/CF8M,C954/C958 EN-JS 1030 (GGG-40) Stainless steel (1.4408) |
| Shaft / stem | SS431/SS420/SS410/SS304/SS316 |
| Seat / lining | NBR/EPDM/VITON /PTFE/PFA |
| Taper pins | SS416/SS316 |
| Bushing | BRASS/PTFE |
| O-ring | NBR/EPDM/VITON /PTFE |
| Key | STEEL |
Actuation
- Worm-gear/hand-wheel
- Electric-actuator
- Pneumatic-actuator
- Hydraulic-actuator
Double flange butterfly valve features
- Simple structure and easy operation
- Easy installation and good sealing
- Long service life and high reliability
- Good interchangeability of parts and cost saving
- Wafer type butterfly valve with concentric design
- Using backless structure, Rubber fusion bonded on valve body
- Replaceable, resilient seat
- Streamlined disc, one-piece stem
Factory View
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