China Butterfly Valve-soft-sealed butterfly valve

China Butterfly Valve-Rubber Seated Wafer Type Butterfly Valve, also known as soft-sealed butterfly valve, is mainly used to realize the piping system cutting and flow control components. It has been widely used in many fields such as petroleum, chemical, metallurgy, and hydropower. The disc of the soft sealing butterfly valve is mounted in the diameter direction of the pipe. In the cylindrical passage of the butterfly valve body, the disc-shaped disc rotates around the axis, and the rotation angle is between 0° and 90°. When the rotation is 90°, the valve is fully open. The characteristics of the new high-life stainless steel butterfly valve and the butterfly valve have problems in use. According to the connection method, the soft sealing butterfly valve can be divided into a flange type soft sealing butterfly valve, a clip type soft sealing butterfly valve, and a welded soft sealing butterfly valve.

Nominal Diameter:         DN40–DN1200   

Nominal Pressure:         10Bar/16Bar   

Design Standard:           BS EN593/BS5155/API609/DIN3354   

FTF Dimension:              ISO 5752-20/BS EN558-20/API609   

Flange Connection:       ASME B16.1 Class125/ASME B16.5 CL150/ASME B16.47 CL150/

                                         DIN 2501 PN10-16/EN1092 PN10-16/JIS10K  

Inspection and Test:      EN12266-1/API 598/ISO5208/JIS B2003   

Material List:                     

1. Body:

    Cast Iron                       ASTM A126 CL.B/ DIN1691 GG25   

    Ductile Iron                    ASTM A536 60-40-18/ DIN1693 GGG40   

    Carbon  Steel                ASTM A216 WCB   

    Stainless  Steel             ASTM A351 CF8/CF8M   

    Bronze AL-Bronze         ASTM B148 C954   

2. Disc:

    Ductile Iron                    ASTM A536 60-40-18/ DIN1693 GGG40   

    Carbon Steel                 ASTM A216 WCB   

    Stainless Steel              ASTM A351 CF8/CF8M   

    Bronze AL-Bronze         ASTM B148 C954   

    Coating                         Nickelplate/Epoxy/EPDM/VITON/Nylon   

3. Stem:

    Stainless Steel              ASTM A182 304/316/410   

    Alloy                              Monel K500   

4. Seat:

    Elastomer                     Working temperature   

    EPDM                          -45℃-135℃   

    NBR                             -10℃-80℃   

    VITON                          -20℃-150℃   

    PTFE                            -10℃-150℃   

5. Bushing:

    PTFE   

    Bronze   

6. 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.