China Class 150 C95800/C958 Disc Lug Butterfly Valve DN250 with Soft Seat Exporter, Exporters
Product Description
The C95800 disc (also called C958 disc) is made of nickel-aluminum bronze. It offers outstanding resistance to seawater corrosion, cavitation, and marine biofouling, making it ideal for marine pipelines and desalination systems.
C95800 material naturally forms a protective oxide film in saltwater environments, significantly extending overall valve service life.
The combination of C95800 material with an EPDM valve seat is arguably the most cost-effective solution for regulating valves in seawater systems.
The lug body design with threaded holes allows the valve to be securely installed between flanges and supports end-of-line operation—meaning one side of the pipeline can be disassembled without disturbing the other. This design improves maintenance efficiency and installation flexibility.
| 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, JIS 5K, 10K, 16K, GOST33259 |
| Upper Flange STD | ISO 5211 |
| Material Specifications | |
| 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 |
C95800 provides exceptional resistance to marine biofouling, cavitation, and general seawater corrosion by forming an adherent protective oxide layer, ensuring high durability in aggressive marine and desalination environments.
The lug design features threaded bolt holes that allow the valve to be bolted directly to pipe flanges. This enables end-of-line service, meaning one side of the pipeline can be disconnected for maintenance while the other side remains pressurized.
The valves conform to multiple international connection standards including EN/DIN PN6, PN10, PN16, PN25, ASME 150LB, JIS 5K, 10K, 16K, and GOST 33259, ensuring seamless integration into diverse piping networks.
EPDM offers excellent chemical stability, resilience, and tight bi-directional sealing in water systems. Combined with the C95800 disc, it provides a highly cost-effective and reliable solution for saltwater handling.
Thanks to the standard ISO 5211 upper mounting flange, the valve can be operated manually with a hand lever or gear box, or automated with electric or pneumatic actuators according to system requirements.
