OEM EN593 Replaceable EPDM Seat DI Flange Butterfly Valve Manufacturer, Manufacturers
Product Description
The outstanding difference between this product and other flange butterfly valves is that the valve seat is replaceable. First of all, this replaceable EPDM soft valve seat has greater elasticity and toughness and can provide good sealing. Secondly, as the name suggests, this type of valve seat is replaceable. As a component that often rubs, the valve seat is a consumable part. If the soft seat is damaged, just simply replace the valve seat. The costs can therefore be reduced.
In addition, the stainless steel CF8 valve disc has strong corrosion resistance and high temperature resistance. Therefore, it can be applied to different media, including liquid, gas and steam, etc.
Pneumatic actuators adopt double piston structure, with high precision and effective, and stable output torque.
Each product of ZFA has material report for the main parts of the valve, ensuring complete quality assurance.
Body Test: The valve body test use 1.5 times pressure than standard pressure. The test should be done after installation, the valve disc is half close, called body pressure test. The valve seat uses 1.1 times pressure than standard pressure.
Special Test: According to customer’s requirement, we can do any test you need.
Price Advantage: Our price is competitive because we process valve parts by ourselves. We think “Customer satisfaction is our ultimate goal.” Depending on our advanced technology, complete quality control and good reputation, we will offer more high-quality valve products.
| Size & Pressure Rating & Standard | |
| Size | DN40-DN4000 |
| 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 | |
| Body | Cast Iron(GG25), Ductile Iron(GGG40/50), Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L), Duplex Stainless Steel(2507/1.4529), Bronze, Aluminium Alloy. |
| 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 |
Our valves are compliance with valve international standard of ASTM, ANSI, ISO, BS, DIN, GOST, JIS, KS and so on. Size DN40-DN1200, nominal pressure: 0.1Mpa~2.0Mpa, suitable temperature:-30℃ to 200℃. The products are suitable for non-corrosive and corrosive gas, fluid, semi-fluid, solid, powder and other medium in HVAC, fire control, water conservancy project, water supply and drainage in urban, electric powder, petroleum, chemical industry, and so on.
The valve seat is a consumable part subjected to frequent friction. With a replaceable soft seat design, only the seat needs to be replaced if damaged rather than discarding the entire valve, significantly reducing overall maintenance and replacement costs.
Thanks to the corrosion-resistant and high-temperature-resistant stainless steel CF8 disc, the valve is suitable for liquids, gases, steam, semi-fluids, solids, and powders across corrosive and non-corrosive environments.
Body testing is conducted after installation at 1.5 times the standard pressure with the disc half-closed. The valve seat is tested at 1.1 times the standard pressure. Special custom tests can also be accommodated upon request.
The valves adhere strictly to major international engineering standards including ASTM, ANSI, ISO, BS, DIN, GOST, JIS, and KS.
We support multiple actuation types to fit operational requirements, including Hand Lever, Gear Box, Electric Actuator, and high-precision double-piston Pneumatic Actuators.
Yes, every ZFA product is supplied with material test reports for all critical main valve components to ensure complete compliance and quality verification.
