Worm Gear Class150 48'' Buttwelding Triple Offset Butterfly Valves:
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Material: |
Body: WCB; Disc: CF8, Stem: 13Cr. Seat: WCB+STL,Sealing ring: ss304+graphite |
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Nominal Pressure |
Class 150LB |
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Nominal Diameter: |
DN1200 |
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End Connection: |
Welding |
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Face To Face: |
API 609 |
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Working Temperature: |
-100~+750℃ |
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Test And Inspection: |
API 598/ISO 5208 |
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End Connection: |
Buttwelding |
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NACE: |
NACE 0175 |
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Certificate: |
ISO9001, ISO14001, ISO28001, TS, CE,TUV
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The design features of DBV triple eccentric butterfly valves:
The first eccentricity: the deviation between stem rotation center and the seat centerline ensures a tight seal between the seat and disc.
The second eccentricity: the deviation between stem rotation center and the seat centerline, when the valve opens, can make the butterfly plate leave sealing surface quickly.
The third eccentricity: the deviation between the center of the seal ring’s vertebral body and the seat centerline completely eliminates the friction between disc and seat.
Product Characteristics of DBV triple eccentric butterfly valves:
1. Elastic property of composite metal sealing ring performs zero leakage.
2. Torque seal ensures persistent two-way zero leakage.
3. The design of right-angled rotation with zero friction is implemented by the distinctive triple eccentric principle. It eliminates the friction between the seat and sealing ring in 90degree rotation.
4. STL one-piece hard-surface seat may adapt to many working conditions, which is featured by long service life and easy maintenance.
5. One-piece cast(sheet welded) body, face to face dimensions conforming to ISO5752, ASME B16.1, and API609, can be replacement to high performance butterfly valves and other types of valves, with easy and flexible installation.
6. All metal structure and zero leakage performance make the valve have the property of nature fireproof safety.
7. Anti-blowout stem for high dependability completely conforms to API609.
8. The valve position indictor on the stem and the flange mounted at the top are in favor of the indication of disc position.
9. The stem of triple eccentric butterfly valve is a shaft structure, stem and disc and connected by pin-key combination.
