China Butterfly Valve-ANSI Triple Eccentric Butterfly Valve

Author:China Butterfly Valve     Published time:2018-04-16 06:45     Reading times:431    

China Butterfly Valve-ANSI Triple Eccentric Butterfly Valve Application


China Butterfly Valve-ANSI Triple Eccentric Butterfly Valve has a range of pressure resistance up to 2500 pounds, temperature resistance as low as -196 °C as high as 850 °C, and a seal that achieves zero leakage with a control ratio of more than 100:1. In other words, in all kinds of harsh and critical process control pipelines, whether they are on-off valves or control valves, as long as the type is properly selected, it is now possible to use the butterfly valves with confidence and at a low cost.

 

China Butterfly Valve-ANSI Triple Eccentric Butterfly Valve refers to the addition of an angle eccentricity on the basis of the double eccentric structure, even if the sealing surface of the butterfly valve is inclined and tapered. The feature of this structure is that the outer periphery of the butterfly plate is processed into an outer oblique taper surface, and the inner side of the sealing valve seat is processed into an inner taper surface. The sealing cross section of the butterfly valve becomes elliptical, and the shape of the sealing surface of the butterfly plate is therefore asymmetrical up and down. Since the sealing surface is tapered, the side plate divided by the stem axis is pressed upward toward the valve seat along the large inclined surface, and the small side plate presses the valve downward along the small inclined surface. seat. The seal between the butterfly plate seal ring and the valve seat is not based on the elastic deformation of the valve seat, but depends on the contact surface compression to achieve the seal, so the three eccentric butterfly valve is basically open and closed without friction, and with the increase of the closing pressure, the valve The more closed the more tight.

 

China Butterfly Valve-ANSI Triple Eccentric Butterfly Valve is to fundamentally change the seal structure, it is no longer a position seal, but a torque seal. That is, not relying on the elastic deformation of the seat, but rely on the contact surface pressure of the seat to achieve the sealing effect, thus solving the problem of zero leakage of the metal seat of the butterfly valve. In the design of sealing angle, the medium pressure can be partially applied to the sealing surface when the medium is in the forward and reverse direction. The contact surface pressure and the sealing surface of the part of the medium pressure make the high pressure and high temperature resistant.


China Check Valve-Double Plate Rubber Check Valve Product Details:

Nominal Diameter:       DN50–DN1200

Nominal Pressure:       10Bar/16Bar/25Bar/40Bar/64Bar/100Bar/150lb/300lb/600lb

Design Standard:         BS EN593/BS5155/API609/DIN3354

FTF Dimension:            ISO 5752/BS EN558/API609/ASME B16.10/DIN3202

Flange Connection:     ASME B16.5 /DIN 2501 /EN1092 

Inspection and Test:    EN12266-1/API 598/ISO5208

 

Material List:

1. Body

    Carbon Steel                ASTM A216 WCB

    Stainless Steel             ASTM A351 CF8/CF8M

2. Disc

    Carbon Steel                ASTM A216 WCB

    Stainless Steel             ASTM A351 CF8/CF8M

3. Stem

    Stainless Steel             ASTM A182 304/316/410   

    Alloy                             Monel K500

4. Seat                             SS304/SS316/Stellite 

5. Disc Seal                      Laminated Seal Ring/Stainless Steel

6. Retaining                     Carbon Steel/Stainless Steel

7. Screw                           Carbon Steel/Stainless Steel

8. Packing                        Flexible Graphite

9. Yoke                             Carbon Steel

10. Bushing                      Self-lubricating/SS304

11. Pin

     Stainless Steel             ASTM A182 304/316/410

     Alloy                             Monel K500

Structure and Feature

1. Bi-directional tightness.

2. Small in size and light in weight. Easy installation and maintenance. It can be mounted wherever needed.

3. Simple and compact construction, quick 90 degree on-off operation.

4. Minimized operating torque, energy saving.

5. Flow curve tending to straight line. Excellent regulation performance.

6. Long service life. Standing the test of tens of thousands opening/closing operations.

7. Bubbles-tight sealing with no leakage under the pressure test.

8. Wide selection of materials, applicable for various medium.

China Butterfly Valve Manufacturer all the pictures in the article is original .If you want to copy it, please ark the derivation!

 


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