We supply a wide range of bi-directional triple offset butterfly valves with zero leakage. The low torque guarantees easy operation and the metal seat design allows it to be applied in severe services. All parts are replaceable and in-line maintenance is available. The triple offset butterfly valve complies to API609 standard, offers a light weight, cost effective, and compact design with a low operating torque. Additionally, it can replace traditional gate, globe and ball valves in most industry applications.

Design Standard: API609, ASME B16.34

Flange: ASME B16.5, ASME B16.47

Structure Length: API609, ISO 5752, ASME B16.10

Size Range: 2"~120" (DN50~DN3000)

Pressure Rating: ASME CLASS 150-2500 (PN16-PN420)

Temperature Range: -196℃ to +650℃

Disc Sealing: Graphite/Metal laminated, Solid metal

Body Material: Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel, etc.

End Connection: Wafer, Lug, RF, BW, ANSI B16.10 Gate Valve Face to Face

Operation: Gear, Pneumatic, Electric, Hydraulic, Bare Stem, etc.

Fire Safe Design: Yes

Brand: Neway

Applications: Petrochemical, Refinery, Shipbuilding industry, Power plant, Steel Mill, Water Treatment, etc.

The triple offset butterfly valve has a true metal-seated, quarter-turn design for bi-directional service. It is fire safe by design, and it eliminates the innate problem of material aging and deformation of soft seated butterfly valves. Full metal construction and increased material compatibility make triple offset butterfly valves ideal for most process and control applications.

Triple Offset Frictionless Design:

1^st offset: The stem shaft is offset from the sealing surface plane, allowing for continuous engagement of the seating surface.

2^nd offset: The stem shaft’s rotation axis is offset from the center of the bore, removing contact between the seat and seal ring through most of the disc’s travel.

3^rd offset: The conical seating surface is offset asymmetrically to eliminate friction during opening and closing.

Compact Design:

The triple offset butterfly valves are designed to API 609 and offers flow control solution in a compact design. The triple offset butterfly valves series provides a light weight solution to bulky gate, globe and ball valves when space or weight are at a premium.

Actual Image of Triple Offset Metal Seated Butterfly Valves:

Advanced Manufacturing 

Advanced Quality Control

Q: What’s the level of low emission shaft seal of this triple offset butterfly valve can achieve?
A: We can supply packing to limit fugitive emission rates down to 20 ppm(20 ppm per sniffing method with helium gas.), also optional shaft seal design available per SHELL MESC 77/312 & TA-Luft.

Q: What’s the advantage of metal seated butterfly valves compare to soft seated ones?
A: Metal seated butterfly valves eliminate the innate problem of material aging and deformation in soft seated ones, and it’s a solution for the toughest industrial applications.