Cast Iron GGG50 DIN 3352 F4 F5 & BS 5163 Resilient Seated Gate Valves
How to Choose The Best Resilient Seated Gate Valves
Types of Resilient Seated Gate Valve
Silient-seated gate valves are commonly used in water, wastewater, and other fluid control systems due to their durability, ease of operation, and ability to provide a tight seal. These valves use a resilient seat material, typically elastomeric, to provide the sealing function, allowing them to offer reliable performance even in demanding environments. Below are the different types of resilient-seated gate valves, categorized based on various features and materials:
1. Standard Resilient-Seated Gate Valves
These are the most common types of resilient-seated gate valves. They consist of a metal body and a rubber or elastomeric seat, which provides the sealing function. The seat is typically attached to the valve body and is designed to withstand pressure without deforming or leaking. Standard resilient-seated gate valves are used for general-purpose applications where a simple, reliable shutoff valve is needed. These valves often feature a non-rising stem design, which helps prevent corrosion and allows for smooth operation.
Key Features:
● Metal body with elastomeric seat
● Non-rising stem design
● Suitable for standard pressure applications
● Used in potable water, wastewater, and industrial systems
2. Non-Rising Stem (NRS) Resilient-Seated Gate Valves
Non-rising stem resilient-seated gate valves have a stem that remains stationary while the gate rises or falls in response to valve operation. This design is advantageous for applications where space constraints make rising stems impractical. NRS valves are often used in buried or underground installations, as they don't require above-ground clearance for the stem to rise.
Key Features:
● Stem does not rise during operation
● Typically used in buried or space-constrained installations
● Easier to maintain and operate in tight spaces
● Ideal for municipal water systems and industrial plants
3. Rising Stem Resilient-Seated Gate Valves
In contrast to the NRS design, rising stem resilient-seated gate valves have a stem that moves upward and downward with the gate. This type of valve is often used in above-ground applications where the position of the stem provides a visual indicator of whether the valve is open or closed. Rising stem valves are typically employed in systems where valve status needs to be easily monitored.
Key Features:
● Stem rises and falls with the gate
● Provides a visual indication of valve position
● Ideal for installations where valve status monitoring is important
● Commonly used in water treatment plants, fire protection systems, and other critical infrastructure
4. Flanged Resilient-Seated Gate Valves
Flanged resilient-seated gate valves have flanged connections at the ends of the valve body, allowing for easy attachment to pipelines or other system components. This type of valve is commonly used in systems where bolted connections are necessary for installation and maintenance. Flanged valves are typically found in municipal water systems, industrial applications, and irrigation systems.
Key Features:
● Flanged connections for easy installation
● Common in large-diameter pipelines
● Used for high-pressure or high-flow applications
● Suitable for water, wastewater, and industrial fluid transport
5. Socket Weld Resilient-Seated Gate Valves
Socket weld resilient-seated gate valves are designed for smaller-diameter pipes where a tight, secure connection is required. These valves use socket weld fittings, which involve welding the pipe directly into the valve socket. Socket weld valves are typically used in high-pressure systems or smaller pipelines where leak prevention and high structural integrity are critical.
Key Features:
● Socket weld connection for secure fit
● Suitable for smaller-diameter, high-pressure systems
● Commonly used in steam, gas, or chemical lines
● Provides excellent sealing and minimal risk of leaks
6. Flexible Wedge Resilient-Seated Gate Valves
Flexible wedge resilient-seated gate valves feature a flexible wedge that is designed to conform to the seat, ensuring a tight seal. The flexible design of the wedge helps absorb thermal expansion, pressure fluctuations, and system vibrations, making these valves suitable for a wide range of applications, including hot water systems and industrial pipelines.
Key Features:
● Flexible wedge for enhanced sealing
● Suitable for high-pressure and high-temperature systems
● Absorbs system stress like thermal expansion and vibrations
● Used in power plants, chemical industries, and municipal systems
7. Ductile Iron Resilient-Seated Gate Valves
Ductile iron is commonly used for the construction of resilient-seated gate valves due to its high strength, durability, and resistance to corrosion. These valves are often coated with a protective layer, such as epoxy or polyurethane, to enhance their longevity and resistance to the elements. Ductile iron valves are widely used in water distribution systems, wastewater management, and industrial fluid control systems.
Key Features:
● Made from ductile iron for increased strength
● Corrosion-resistant coatings for added durability
● Common in water and wastewater applications
● Long-lasting and reliable under harsh environmental conditions
Resilient-seated gate valves come in a variety of types, each designed for specific applications and environments. From standard and flanged versions to those made from durable materials like ductile iron, these valves provide dependable performance in both low- and high-pressure systems. Whether it's for water treatment, industrial processes, or wastewater management, selecting the right type of resilient-seated gate valve ensures efficient and long-lasting operation.