Triple Eccentric Flange Butterfly Valve
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Triple Eccentric Flange Butterfly Valve

The butterfly valve stem axis deviates from the center of the valve plate and the center of the valve body at the same time, and the rotary axis of the valve seat and the axis of the valve body channel have a certain Angle, called three eccentric butterfly valve, with flange connection valve is triple eccentric flange butterfly valve.

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Product Description

Durable Triple Eccentric Flange Butterfly Valve which Can be Customized From Our Factory in China
1.Introduction of Triple Eccentric Flange Butterfly Valve

The butterfly valve stem axis deviates from the center of the valve plate and the center of the valve body at the same time, and the rotary axis of the valve seat and the axis of the valve body channel have a certain Angle, called three eccentric butterfly valve, with flange connection valve is triple eccentric flange butterfly valve.

    


2. Structure of Triple Eccentric Flange Butterfly Valve

1). When the axis of the double eccentric valve stem is eccentric, the conical axis of the sealing surface of the butterfly disc is inclined to the cylinder axis of the body. That is to say, after the third eccentric, the sealing section of the butterfly plate is no longer true circle, but ellipse, and the shape of the sealing surface is asymmetric. One side is inclined to the center line of the body, and the other side is parallel to the center line of the body.

2). The biggest characteristic of tri eccentricity is that it fundamentally changes the sealing structure, no longer the position sealing, but the torque sealing, that is, it does not rely on the elastic deformation of the valve seat, but completely depends on the contact surface pressure of the valve seat to achieve the sealing effect.

3). Therefore, the problem of zero leakage of metal valve seat is solved at one stroke. Because the pressure of contact surface is directly proportional to the pressure of medium, the problem of high pressure and high temperature resistance is also solved.



4.Advantage of Triple Eccentric Flange Butterfly Valve

1) Good sealing performance improves the reliability of the system;

2) The friction resistance is small, the opening and closing is labor-saving and flexible;

3) It has long service life and can switch repeatedly;

4) Strong pressure and high temperature resistance, wide range of applications.

5) Double flow direction can bear pressure, installation without flow direction limit

6)More widely used


5.Technical date of Triple Eccentric Flange Butterfly Valve


Type of Valve
Triple Offset Flange Butterfly Valve
DN(mm)
DN80~DN2200
PN(MPa)
1.0~1.6
Design Temperature Range
-253℃~815℃
Applicable Medium
Fresh water, Sewage, seawater, Oil and gas etc
Connection type:
Flang
Actuator type
Manual drive, Pneumatic,Hydraulic or electric Actuator
Sealing
Metal Hard Seal, Soft seal


4. Material of Triple Eccentric Flange Butterfly Valve


No
PART NAME
MATERIAL
1 Body
WCB
2 Stem
2Cr13
3 Seat
SS304
4 Seal Ring
SS304+Granphite
5 Retainer
Q235
6 Disc
WCB
7 Bushing
Self-lubricating
8 Yoke
WCB
9 Gland
WCB


6. Application of Triple Eccentric Flange Butterfly Valve


Triple eccentric flange butterfly valve can be used in oil and gas exploitation, offshore platform, petroleum refining, petrochemical industry, inorganic chemical industry, energy power generation and other major industrial fields.


7.About Tianjin Milestone Pumu & Valve Co., Ltd.



8.Welcome to c ontact us

[email protected]
Cell: +86 13400234217

9. FAQ

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