Double shaft, CF8M disc, ductile iron body, wafer butterfly valve is a special type of valve designed to control the flow of fluids in piping systems.
The "double stem" feature means that the valve has two stems or shafts connected to the disc. This design enhances the stability and control of the valve disc movement, ensuring reliable and precise operation of the valve.
"Ductile iron valve body" means the valve body is made from ductile iron, a type of cast iron that has been treated with small amounts of magnesium or other additives to increase its strength and ductility. Ductile iron has good mechanical properties and is known for its durability and wear resistance.
This type of valve is commonly used in low pressure and medium temperature applications such as HVAC systems, water treatment plants and general industrial processes.
| Size & Pressure Rating & Standard | |
|---|---|
| Size | DN40-DN1200 |
| Pressure Rating | PN10, PN16, CL150, JIS 5K, JIS 10K |
| Face to Face STD | API609, BS5155, DIN3202, ISO5752 |
| Connection STD | PN6, PN10, PN16, PN25, 150LB, JIS5K, 10K, 16K, GOST33259 |
| Upper Flange STD | ISO 5211 |
| Material Specifications | |
| Body | Cast Iron(GG25), Ductile Iron(GGG40/50) |
| Disc | DI+Ni, Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L), Duplex Stainless Steel(2507/1.4529), Bronze, DI/WCB/SS coated with Epoxy Painting/Nylon/EPDM/NBR/PTFE/PFA |
| Stem/Shaft | SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel |
| Seat | NBR, EPDM/REPDM, PTFE/RPTFE, Viton, Neoprene, Hypalon, Silicon, PFA |
| Bushing | PTFE, Bronze |
| O Ring | NBR, EPDM, FKM |
| Actuator | Hand Lever, Gear Box, Electric Actuator, Pneumatic Actuator |











