OEM Bare Shaft Vulcanized Seat Flanged Butterfly Valve Manufacturer, Factory
Product Description
Dual Half-Shaft Design
The valve opening and closing process is more stable, reducing fluid resistance and improving flow control accuracy.
Vulcanized Valve Seat
Made of special vulcanized material, it has good wear resistance and sealing performance, ensuring long-term stable operation of the valve.
Flange Connection
Standard flange connection is used to facilitate connection with other equipment and has a wide range of applications.
Various Actuators
Pneumatic, electric or manual actuators can be selected according to user needs to meet different operating needs.
Scope of Application
Widely used in pipeline flow control in petroleum, chemical industry, metallurgy, water treatment and other fields.
Sealing Performance
When the valve is closed, it can ensure complete sealing and prevent fluid leakage.
Easy Maintenance
Simple structure, easy to maintain and repair, reducing operating costs.
| Size & Pressure Rating & Standard | |
|---|---|
| Size | DN40-DN1800 |
| Pressure Rating | Class125B, Class150B, Class250B |
| Face to Face STD | AWWA C504 |
| Connection STD | ANSI/AWWA A21.11/C111 Flanged ANSI Class 125 |
| Upper Flange STD | ISO 5211 |
| Material | |
| Body | Ductile Iron, WCB |
| Disc | Ductile Iron, WCB |
| Stem/Shaft | SS416, SS431 |
| Seat | NBR, EPDM |
| Bushing | PTFE, Bronze |
| O Ring | NBR, EPDM, FKM |
| Actuator | Hand Lever, Gear Box, Electric Actuator, Pneumatic Actuator |
The dual half-shaft design enhances the valve disc's structural stability during opening and closing, lowers fluid resistance across the port, and delivers higher precision for flow control.
A vulcanized seat provides exceptional wear resistance and creates a reliable, bubble-tight seal that prevents leakage and extends the operational lifespan of the valve under varying working pressures.
The valve features an ISO 5211 upper flange, making it compatible with manual hand levers, gearboxes, pneumatic actuators, and electric actuators based on operational automation requirements.
The face-to-face dimensions follow AWWA C504 standards, and the connection conforms to ANSI/AWWA A21.11/C111 Flanged ANSI Class 125, ensuring global engineering compatibility.
This flanged butterfly valve is primarily used across water treatment facilities, chemical processing, petroleum piping systems, and metallurgical industries for flow regulation and shut-off control.
The body and disc are available in Ductile Iron and WCB, stems in SS416 or SS431, with seat options of NBR or EPDM, and bush seals in PTFE or Bronze to match specific chemical and pressure demands.
