DN700 Worm Gear Welding Triple Eccentric Butterfly Valve Gear

Nominal Diameter:                                    DN80–DN3000

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

Design Standard:                                      BS EN593/BS5155/API609/DIN3354

FTF Dimension:                                         ISO 5752 SERIES 14/BS EN558 SERIES 14/DIN3202 F4

WELD END DIMENSIONS Connection:    BS EN 12627 /ASME B16.25

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.