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Big Size EPDM Resilient Seat Gate Valve AWWA Standard - China Suppliers & Factory for DN40-DN600 Sizes
| Valve Type: | Resilient seat gate valve | Structure: | Non-rising type |
| Standard: | AWWAC509 | Workmanship: | Investment casting |
| Sealing direction: | Bidirectional | Sealing grade: | Zero leakage |
| Temperature: | -20°C < T < 120°C | Operation: | Handwheel |
Characteristics
The gate plate of a resilient-seated gate valve typically employs an integral encapsulation process. The rubber sealing face is capable of compensating for minor imperfections on the sealing interface via elastic deformation, thereby achieving zero leakage. Meanwhile, a triple-layered O-ring seal is fitted around the valve stem, providing highly effective protection against medium leakage.
Advantages
1
Ultra Large Flow Capacity & Extremely Low Pressure Loss
The large-diameter design is suitable for large flow transmission needs such as main pipelines and pump stations. When fully open, the gate completely separates from the flow channel, and the flow channel is straight through. The fluid resistance coefficient is extremely low, far lower than that of butterfly valves and globe valves of the same caliber, which can effectively reduce the energy consumption of pump stations and reduce long-term operating costs. Not easy to accumulate debris: The bottom adopts a flat bottom design, similar to the pipeline, which is not easy to cause debris accumulation and allows the liquid to flow smoothly, especially suitable for fluid media containing impurities.
2
Corrosion Resistant & Wear-Resistant, with a Long Service Life
The valve body is mostly made of ductile iron material, with epoxy resin powder sprayed on the inner and outer surfaces, which is acid and alkali resistant, corrosion-resistant, and suitable for buried or humid harsh environments. The valve stem is made of stainless steel material and sealed with multiple O-rings to prevent rusting and jamming of the valve stem. The rubber sealing layer adopts wear-resistant ethylene propylene diene monomer (EPDM) or nitrile rubber (NBR), which has excellent anti-aging performance and extends the overall service life of the valve.
3
Easy to Operate, Compatible with Remote Control
Large caliber specifications can be equipped with electric and pneumatic actuators to achieve remote automation control and meet the regulation needs of smart pipeline networks. After optimizing the valve stem sealing structure, the friction resistance is reduced, and manual operation is more convenient. It also supports replacing the valve stem sealing ring under pressure without stopping the pump or water supply, which does not affect the continuous operation of the system.
Packing
📦 Standard Export Wooden Case Packaging
Application Scenarios
📌
The resilient-seated gate valve is widely utilized for water supply and drainage, sewage treatment, HVAC systems, and light industrial fluid handling systems.
Frequently Asked Questions
Q
What is the operating temperature range of this resilient-seated gate valve?
This valve is designed to operate within a temperature range of -20°C to 120°C, making it suitable for a wide variety of fluid handling environments, including both cold and moderately high-temperature applications.
Q
What sealing standard does this gate valve meet, and is it truly zero leakage?
Yes. The valve achieves zero leakage through its integral rubber encapsulation process on the gate plate. The elastic rubber sealing face compensates for minor imperfections on the sealing interface through deformation. Additionally, a triple-layered O-ring seal around the valve stem provides extra protection against medium leakage.
Q
Can this valve be used in buried or corrosive environments?
Absolutely. The valve body is made of ductile iron with epoxy resin powder coating applied to both inner and outer surfaces, offering excellent resistance to acids, alkalis, and corrosion. The stainless steel valve stem with multiple O-ring seals further prevents rusting and jamming, making it ideal for buried or humid harsh environments.
Q
Does the valve support remote or automated operation?
Yes. Large caliber specifications of this gate valve can be equipped with electric or pneumatic actuators to enable remote automation control. This makes them compatible with smart pipeline network management systems and suitable for pump stations, water treatment facilities, and HVAC systems requiring automated flow regulation.
Q
What rubber material is used for the sealing layer, and how long does it last?
The rubber sealing layer is made from wear-resistant Ethylene Propylene Diene Monomer (EPDM) or Nitrile Rubber (NBR), both of which offer excellent anti-aging performance. These materials significantly extend the overall service life of the valve, reducing maintenance frequency and long-term operational costs.
Q
What packaging is used for export shipment of this gate valve?
The valve is shipped in standard export wooden case packaging, which is designed to protect the product during international transportation. This ensures the valve arrives in excellent condition regardless of shipping distance or handling conditions.