TitleProduct

Double Eccentric Butterfly Valve

  • Price:

    Negotiable

  • minimum:

  • Total supply:

  • Delivery term:

    The date of payment from buyers deliver within days

  • seat:

    Liaoning

  • Validity to:

    Long-term effective

  • Last update:

    2020-02-24 20:37

  • Browse the number:

    320

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Company Profile

Ying Desi Rui Machinery Manufacturing Co., Ltd.

By certification [File Integrity]

Contact:sirui(Mr.)  

Email:

Telephone:

Phone:

Area:Liaoning

Address:Liaoning

Website:http://www.syydsr.com/ http://sirui.xanxn.com/

Product Details

In a double-offset or double eccentric butterfly valve, the stem is located behind the disc with an additional offset to one side (Figure 4). This double eccentricity of the stem enables the rotating disc to rub over the seat for only about one to three degrees.


The high performance double eccentric butterfly valve is a great solution for any industrial need. Made from top quality materials and with a long lasting design that's made to fight corrosion and vibration. Both wafer and lug butterfly valve designs offer bi-directional sealing as a standard in conformance with ASME. Butterfly valves are available for saturated steam at 200PSI and 450PSI with a tight shut off vacuum to 2x10(2).


The unique seat design utilizes a flexible lip seal concept When the disc closes, this action causes a slight deflection in the seat, energizing the seat. During this energized position, the seat has a stored energy force constantly pushing against the disc. In addition to this "energized" force, when pressure is on the insert side, the pressure pushes under the lip which further amplifies the sealing force between the disc and the seat.


Valve components Material specification

Components

Material

Body

Cast Iron, Cast Steel, SS, Duplex SS, etc.

Disc

Cast Steel, SS, Duplex SS, Monel, Inconel, etc.

Stem

SS, Duplex SS, Monel, Inconel, etc.

Seat

Cast Steel, SS, Duplex SS, Monel, Inconel, etc.

Actuator

Level, Handwheel, Gearbox, Electrical/Pneumatic Actuator, etc.


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