OEM Replaceable Seat CF8M Disc Lug Butterfly Valve DN250 PN10 10Inch Manufacturer, Factories
Product Description
The replaceable seat ensures a bubble-tight shutoff, critical for isolating flow or preventing leaks.
Allows the seat to be replaced without removing the valve from the pipeline, reducing downtime and maintenance costs. It can ensure a tight seal against the disc, preventing leakage when the valve is closed.
CF8M is a cast stainless steel (316 stainless steel equivalent), offering excellent corrosion resistance, durability, and suitability for harsh environments.
The valve has threaded lugs, enabling it to be bolted between flanges or used as an end-of-line valve with only one flange. This design supports easy installation and removal.
Equivalent to a 10-inch valve, suitable for large-diameter pipelines.
Rated for a maximum pressure of 10 bar (approximately 145 psi), appropriate for low to medium-pressure systems.
Can be operated manually (via lever or gear) or with actuators (electric or pneumatic) for automated systems. The lug design often includes an ISO 5211 mounting pad for actuator compatibility.
Depends on the seat material (e.g., EPDM: -20°C to 130°C; PTFE: up to 200°C). CF8M discs handle a wide temperature range, typically -50°C to 400°C, depending on the system.
Likely adheres to standards like API 598 (testing), ASME B16.34 (valve design), and MSS SP-68 (performance).
| 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 | |
| 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 lined with PTFE |
| Stem/Shaft | SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel |
| Seat | EPDM |
| Bushing | PTFE, Bronze |
| O Ring | NBR, EPDM, FKM |
| Actuator | Hand Lever, Gear Box, Electric Actuator, Pneumatic Actuator |
The replaceable seat allows maintenance personnel to change the seat directly on-site without removing the valve from the piping system. This significantly lowers labor costs, minimizes process downtime, and guarantees bubble-tight shutoff performance.
Yes, the threaded lug design allows the valve to be securely bolted to a single flange, making it suitable for end-of-line isolation service as well as bidirectional flow control between two flanges.
CF8M is the cast equivalent of 316 stainless steel, offering exceptional resistance to pitting, crevice corrosion, and aggressive chemicals, while reliably withstanding broad temperature fluctuations.
The valve can be operated manually via a hand lever or worm gear box, or automated via pneumatic or electric actuators utilizing the standardized ISO 5211 upper mounting flange.
The standard product range covers nominal diameters from DN40 to DN1200, supporting working pressures from PN6 up to PN25, ANSI Class 150, and JIS 5K to 16K configurations.
