Butt-welding End Butterfly Valve

Eccentric Butterfly Valve -> Butt-welding End Eccentric Butterfly Valve

The triple eccentric butterfly valve, which makes use of a metal seat, is therefore able to withstand a greater amount of pressure, compared to resilient seated butterfly valve. The seal of the eccentric disc could be either metal/Graphite multi-layer design, or fully metal-to-metal design. The multi-layer design could achieve zero leakage and simple maintenance, while the metal-to-metal design is more reliable in higher temperature and pressure. Basically speaking, triple eccentric butterfly valve is both applied in shutoff or throttling service.

Butt-welding end butterfly valve has the advantage of zero leakage at the valve and pipe joints, and is then recommended at high temperature, high pressure applications to achieve bubble tight seal. The flangeless butt-welding end would also bring great convenience to thermal insulation works.

Features of Butt-welding End Eccentric Butterfly Valves:

Eccentric Disc Design
Multi-layer Disc Seal Standard
Fully Meal-to metal Seal Optional
Uni-directional Flow
Butt-welding End

Applicable Standards of Butt-welding End Eccentric Butterfly Valves:
a) Design & Manufacture: API 609, EN 593, MSS SP-68
b) Face to Face Dimension: API 609, EN 558
c) End Connection: ASME B16.25, EN 12627
d) Test and Inspection: API 598, EN 12266

Sizes: 2" - 48" or DN50 - DN1200
Pressure Rating: Class 150 - Class 600 or PN10 - PN100
Materials of Valve Body: WCB, LCB, WC6, WC9, CF8, CF3, CF8M, CF3M, etc.
Operated by: Lever, Gear, Pneumatic, hydraulic and Electric actuator

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Product Categories : Butterfly Valve > Eccentric Butterfly Valve