Rising Stem Resilient Seated Flanged Gate Valve is a reliable shut-off valve designed for water supply, wastewater treatment, fire protection, and industrial pipeline systems. It features a rising stem (OS&Y – Outside Screw and Yoke) design and a resilient rubber encapsulated wedge, providing excellent sealing performance, easy operation, and long service life.
Compared with traditional metal seated gate valves, the soft seated gate valve uses an EPDM or NBR rubber-coated wedge to achieve bubble-tight sealing with minimal leakage. The rising stem design allows operators to clearly identify the valve opening and closing position, making it suitable for applications where safety and easy maintenance are required.
Manufactured with a high-strength ductile iron body, Chihao Rising Stem Resilient Seated Flanged Gate Valves are available in PN10 and PN16 pressure ratings with various operating options, including handwheel, gearbox, electric actuator, and pneumatic actuator. The valve can be produced according to international standards and customized according to customer requirements.
Key Features
● Rising Stem (OS&Y) Design
The stem moves upward when the valve opens, providing a clear visual indication of valve position and improving operation safety.
● Resilient EPDM Rubber Wedge
The fully encapsulated rubber wedge ensures reliable shut-off performance, excellent sealing ability, and reduced operating torque.
● Ductile Iron Construction
The valve body is manufactured from ductile iron, offering high mechanical strength, corrosion resistance, and long-term durability.
● Low Torque Operation
The optimized wedge structure and smooth stem design reduce operating force and extend valve service life.
● Flanged End Connection
Standard flanged connections ensure easy installation and compatibility with various pipeline systems.
● Multiple Operation Options
Available with handwheel, gearbox, electric actuator, or pneumatic actuator to meet different project requirements.
Technical Specifications
| Specification | Description |
|---|---|
| Product Name | Rising Stem Resilient Seated Flanged Gate Valve |
| Valve Type | Soft Seated Gate Valve |
| Design | Rising Stem / OS&Y |
| Body Material | Ductile Iron |
| Wedge Material | EPDM Encapsulated Rubber |
| Stem Material | Stainless Steel |
| Pressure Rating | PN10 / PN16 |
| Size Range | DN50-DN600 |
| Connection Type | Flanged End |
| Face to Face Standard | EN 558 |
| Flange Standard | EN 1092-2 / ANSI B16.42 |
| Working Temperature | -10°C to 80°C |
| Suitable Medium | Water, Drinking Water, Wastewater, Fire Protection Water |
Applications
Rising Stem Resilient Seated Flanged Gate Valves are widely used in:
Water Supply Systems
Used for pipeline isolation, water distribution networks, pumping stations, and municipal water projects.
Fire Protection Systems
Suitable for fire hydrant systems, fire pump connections, and sprinkler pipeline applications.
Wastewater Treatment Plants
Provides reliable flow isolation for sewage and wastewater pipelines.
Industrial Pipeline Systems
Applied in cooling water systems, process pipelines, HVAC systems, and general industrial applications.
Manufacturing Standards
Our resilient seated gate valves can be manufactured according to international standards, including:
- EN 1074
- EN 1171
- EN 558
- EN 1092-2
- AWWA C509 / C515
- ANSI standards
Inspection and testing can be carried out according to customer requirements to ensure reliable performance before shipment.
Why Choose Chihao Rising Stem Resilient Seated Gate Valve?
✔ Professional manufacturer of industrial pipeline products
✔ High-quality ductile iron valve body with corrosion-resistant coating
✔ Reliable EPDM resilient sealing system
✔ Competitive solution for distributors, contractors, and engineering projects
✔ Support OEM customization and bulk orders
✔ Suitable for global water, fire protection, and industrial applications