Double eccentric butterfly valve
Product Description
Double eccentric butterfly valve (TH-BTV-DE)
Area of application
Marine industry, Water supply & drainage, fire fighting, shipbuilding, water treatment and other systems
Data sheet of Double eccentric Butterfly valve
| TYPE: |
Double eccentric |
| SIZE & CONNECTIONS: |
DN1400 to D3800 |
| 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, full lined PTFE/PFA |
| 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 EN2632
- Face to Face dimensions Conform to DIN3202 F4
- Topwork’s dimensions Conform to ISO5211
- Testing Conform to ISO5208
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 eccentric butterfly valve features
- Double eccentric butterfly valve is also called high-performance butterfly valve, which is mainly used for water drainage in water plants, power plants, steel smelting, chemical industry, water source engineering, environmental facilities construction, etc.
- It is especially suitable for waterway pipelines as regulating and shut-off equipment.
- Compared with the center-line butterfly valve, the double eccentric butterfly valve is more resistant to high pressure, longer life and better stability.
- Reasonable design, compact structure, easy assembly and disassembly, and easy maintenance.
- The eccentric structure is adopted to reduce the friction of the sealing ring and prolong the service life of the valve.
- Completely sealed with zero leakage. Can be used in ultra-high vacuum conditions
- Replace the valve plate seal ring, butterfly plate, rotating shaft and other materials, applicable to multiple media and different temperatures
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