What is resilient seated gate valve?

A Resilient Seated Gate Valve controls fluid flow by using a flexible, non-metallic seat to ensure tight shutoff. This valve plays a vital role in waterworks and industrial systems, supporting efficient water and wastewater management. Market demand continues to grow rapidly, especially in the Asia Pacific region. In fact, market demand in this region has grown by 12% annually. Yaxing Valve delivers reliable solutions for these applications.

Resilient Seated Gate Valve

Definition of Resilient Seated Gate Valve

A resilient seated gate valve, also known as a soft seal gate valve, uses an elastomer-lined wedge to achieve a complete leak-proof seal. This design ensures that the valve seals tightly under pressure, preventing leaks and supporting the safe and efficient movement of fluids. The body and bonnet of the soft seal gate valve feature corrosion-resistant materials, often coated with fusion bonded epoxy. This construction provides durability and extends the service life of the valve, even in challenging environments. The soft seal gate valve stands out for its good sealing performance, making it a preferred choice in water supply and industrial systems.

The resilient seated gate valve differs from the hard seal gate valve by using a flexible, non-metallic seat. This flexibility allows the resilient seated gate valve to adapt to minor imperfections in the sealing surface, ensuring reliable operation. The soft seal gate valve remains a critical component in modern fluid control systems, where maintaining a tight shutoff is essential.

Features

The soft seal gate valve offers several features that enhance its performance and reliability:

  ● Seals tightly to prevent leaks under pressure.

  ● Facilitates the safe and efficient movement of fluids.

  ● Provides corrosion resistance through fusion bonded epoxy coatings.

  ● Supports easy maintenance and long service life.

Yaxing Valve manufactures soft seal gate valves using high-quality materials, including cast steel, carbon steel, and stainless steel. These material options allow the resilient seated gate valve to handle a wide range of applications, from municipal water supply to industrial pipelines. The robust construction of the soft seal gate valve ensures dependable operation in both standard and demanding conditions.

The resilient seated gate valve meets the requirements of AWWA C509-23, which outlines the minimum standards for resilient seated gate valves used in water supply service. Key points from this standard include:

  ● The standard specifies materials, design, testing, inspection, rejection, marking, and shipping.

  ● Valves operate within a temperature range of 33°F to 125°F (0.6°C to 52°C).

  ● Maximum fluid velocity is 16 ft/s (4.9 m/s) when fully open.

  ● Available sizes range from 3 to 72 inches (75 to 1,800 mm) nominal pipe size.

  ● Minimum design working water pressure is 200 psi for sizes 3-12 inches and 150 psi for sizes 14-72 inches.

Gate Valve Comparison

Metal Seated vs. Resilient Seated

Gate Valves play a crucial role in fluid control systems. The two main types—resilient seated gate valve and hard seal gate valve—differ significantly in their construction and application. The soft seal gate valve uses an elastomer seat that relies on flexibility to create a tight seal. The hard seal gate valve features a metal-to-metal contact, which provides stability in extreme conditions.

The following table highlights the main differences between these two gate valve types:

The resilient seated seal gate valve excels in low-pressure environments, such as municipal water distribution and wastewater systems. The hard seal gate valve is preferred for high-pressure and high-temperature applications, including industrial pipelines and abrasive media. The sealing performance of the soft seal gate valve stands out in water supply systems, where good sealing performance is essential for preventing leaks. Operational torque requirements also differ. Metal seated gate valves require higher torque because of their harder sealing surfaces. The soft seal gate valve needs less torque, making it easier to operate and maintain. The following points summarize the operational differences:

  ● Metal seated gate valves require higher operational torque due to their rigid sealing surfaces.

  ● Soft seal gate valves require lower operational torque because of their flexible elastomer seats.

When comparing the average lifespan, the resilient seated gate valve typically lasts 15-20 years in water distribution systems. The hard seal gate valve often has a longer lifespan, especially in demanding environments.

Leakage rates also vary between these gate valve types. The resilient seated gate valve is designed for zero leakage, thanks to the elastic deformation of its rubber materials. The hard seal gate valve may allow some degree of leakage, depending on its classification and intended use.

Advantages

The resilient seated gate valve offers several advantages over the hard seal gate valve. Its elastic sealing ring provides good sealing performance, which is crucial for water supply and wastewater management. The design allows for convenient maintenance. Operators can easily disassemble and install the valve, replacing the gate without dismantling the entire valve. This feature saves time and resources.

The resilient seated gate valve is preferred for applications with specific fluid characteristics and lower pressures. The hard seal gate valve is chosen for extreme conditions, emphasizing its durability and stability.

  ● Soft seal gate valves excel in low-pressure applications due to their flexible elastomer seats.

  ● Hard seal gate valves are designed for high-pressure and high-temperature environments, providing stability.

  ● The sealing performance varies significantly due to the different sealing mechanisms employed.

Yaxing Valve stands out as a trusted manufacturer in the industry. The company’s commitment to quality and innovation ensures that every soft seal gate valve delivers reliable performance and durability. Yaxing Valve supports municipal, industrial, and agricultural projects with advanced gate valve solutions tailored to diverse operational needs.

Applications 

Uses

The resilient seated gate valve serves as a critical component in many water management systems. Operators use this valve in municipal water distribution, dirty water treatment, fire prevention, irrigation, and industrial pipelines. The following table highlights common applications and their benefits:

Operators rely on the soft seal gate valve for drinking water, sewage, fire protection, and irrigation. The valve’s design ensures excellent sealing performance, which helps reduce water loss in distribution networks. The use of rubber or elastomer materials in the closure members prevents leaks and supports system integrity.

FAQ

What is the main advantage of a resilient seated gate valve?

The valve provides a tight seal, preventing leaks in water systems. Operators prefer it for reliable shutoff and easy maintenance.

Can resilient seated gate valves handle corrosive fluids?

Yes. Yaxing Valve offers models in stainless steel and carbon steel. These materials resist corrosion and suit various industrial applications.