Non-Rising Stem Resilient Seated Gate Valve (Ductile Iron)
The Non-Rising Stem Resilient Seated Gate Valve is a modern isolation valve that overcomes the limitations of traditional gate valves, particularly regarding sealing integrity and corrosion. It is widely recognized for its excellent, leak-tight sealing achieved through a resiliently seated gate, combined with a space-saving non-rising stem design.
It is a reliable and durable solution for controlling fluid flow in a wide variety of industrial and municipal applications.
⚙️ Technical Specifications
| Parameter | Specification | Note/Translation |
| Nominal Size (DN) | DN50 – DN1200 | Range from 2” to 48”. |
| Nominal Pressure (PN) | PN1.0 – PN2.5MPa | Suitable for medium-pressure pipelines. |
| Working Temperature | 0°C – 120°C | Suitable for cold and warm fluids. |
| Applicable Medium | Water | Primarily used for water and general fluids. |
| Actuation Options | Manual, Electric, Pneumatic, etc. | Versatile drive choices. |
🔑 Key Design and Operational Features
- Resilient Seating :
- The gate is completely encapsulated in resilient material, typically EPDM.
- This entire rubber-coated gate utilizes deformation compensation when closed to achieve a superior sealing effect.
- This overcomes the poor sealing, leakage, and corrosion issues common with older metal-seated gate valves.
- Non-Rising Stem :
- The stem threads within the valve body, meaning the overall height of the valve remains constant whether open or closed.
- This effectively saves installation space, making it ideal for buried installations or confined areas.
- Durable Construction:
- Body and gate are made of Ductile Iron , offering high strength and durability.
- The valve is able to withstand high pressure and maintains a tight seal even after extended periods of use, ensuring minimal maintenance.
📋 Main Parts Material List
| Item No. | Name | Material |
| 1 | Valve Body | Ductile Iron |
| 2 | Gate | Ductile Iron (EPDM Covered) |
| 3 | Bolts | Galvanized Steel |
| 4 | Sealing Ring | NBR |
| 5 | Bonnet | Ductile Iron |
| 6 | Valve Stem | Stainless Steel |
| 7 | “O” Ring | NBR |
| 8 | Thrust Washer | Tin Bronze |
| 9 | Shaft Bushing | Tin Bronze |
| 10 | Bolts | Galvanized Steel |
| 11 | Bonnet | Ductile Iron |
| 12 | Dust Cover | NBR |
| 13 | Handwheel | Cast Iron |
| 14 | Fastening Nut | Galvanized Steel |
🏭 Application Scope
This valve is widely used as a regulator and shut-off device in fluid pipelines across various systems:
- Municipal Water Supply and Sewage
- Construction and Building Services
- Petroleum and Chemical Industry
- Food, Medicine, Light Textile
- Electric Power, Shipbuilding, Metallurgy, and Energy Systems
This valve provides a modern, reliable, and space-efficient alternative to traditional gate valves in water and general utility services.
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