API609 Industry Butterfly Valve 4 inch

Nominal Diameter:           DN40–DN350

Nominal Pressure:          10Bar/16Bar

Design Standard:            API609

FTF Dimension:               API609

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

Inspection and Test:       API 598

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

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.