Worm Gear Operated Ductile Iron Butterfly Valve 

Size: DN40-600

Body: GG25, GGG40,

Disc: CF8/ CF8M/ GGG40/ Al-Br

Seat: NBR/EPDM/PDFE /VITON

Color: Any color according to customer requirement

Working pressure: PN10/ 16

Flange standard: PN10/ 16/ ANSI150

Brief introduction of wafer type spline butterfly valve

1. Wafer type spline butterfly valve, designed to comply with MSS-SP-67, BS5155, and API609. Compatible with GB, DIN, BS, ANSI flanges. Face to face according to ISO 5752.

2. Characteristic of wafer type spline butterfly valve is to splice the rubber liner on the body, the strength more highly and the seal more reliably for the seat.

3. The spline is between the shaft and disc.

4. Available in size 1.5'-24'.

5. Available with handles, manual gear operators, and electric or pneumatic actuators.

Strengths:

1. Midline butterfly valve is compact in structure and light in weight, and easy for assemly and disassembly, and maintenance.

2. The operaturing torque of it is small.

3. It is small in flowing resistance and good in erengy-saving effect, with discharge characteristic approximating inclined straight line.

4. It is featured by reliable sealing, zero leakage with ten thousands of opening and clising times,

5. The valve can be made of various materials, adapted to all kinds of media.

6. They are used in the pipelines and vessels for conveying various corrosive and non-corrosive fluid media in thr engineering systens of water supply generating, petroleum, gas, chemicals, smelting, food, medicine, paper-making, shipping and environmental protection and also for regulating and cutting off the flowing of media.

1. Performance Specification

Note: Applicable temperature and mediums are depending on the materials of different valve seats, bodies, stems and discs, see table 1 and table 2:

Regular Material of the Main Parts (Table 1)