Industrial valves are essential components in fluid control systems, tailored for specific environments and conditions. Among the many types available, resilient seated valves and metal seated valves stand out due to their distinct designs and applications. This article explores their differences in materials, performance, and use cases.

Resilient Seated Gate Valve                  Metal Seat gate valve

1. Sealing Material

• Resilient Seated Valves: These valves use a flexible elastomer, such as rubber, EPDM, or NBR, to create a tight seal. The elastomer’s deformability allows for bubble-tight closure, ensuring minimal leakage and excellent sealing performance even at low pressures.

• Metal Seated Valves: These feature metal-to-metal contact between the seat and gate or disc. Common materials include stainless steel and bronze, offering exceptional durability and resistance to wear, erosion, and high temperatures.

2. Temperature and Pressure Resistance

• Resilient Seated Valves: Ideal for systems operating at moderate pressures and temperatures below 80°C. However, elastomers can degrade under extreme heat or when exposed to abrasive or corrosive fluids.

• Metal Seated Valves: Built to endure harsh environments, they perform reliably under high pressures and temperatures (up to 425°C or more). This makes them suitable for extreme industrial processes.

3. Leakage and Sealing Performance

• Resilient Seated Valves: Known for near-zero leakage, these valves are ideal for systems that require bidirectional sealing, such as water supply pipelines and wastewater systems.

• Metal Seated Valves: While they may allow minimal leakage under some conditions, their robust sealing mechanisms excel in handling demanding environments where durability is critical.

4. Applications

• Resilient Seated Valves: Commonly found in municipal water systems, irrigation, and other applications involving clean, non-abrasive fluids. Their cost-effectiveness and ease of maintenance make them a popular choice.

• Metal Seated Valves: Widely used in heavy industries such as petrochemicals, power plants, and refining, where the fluids are abrasive, corrosive, or exposed to high temperatures and pressures.

5. Maintenance and Durability

• Resilient Seated Valves: The elastomer seats are replaceable, making these valves easier and less expensive to maintain. However, their durability is limited in abrasive environments.

• Metal Seated Valves: These valves are designed for long-term use in rugged conditions. While their maintenance requires more expertise, the longevity of their metal seats justifies the complexity.

Conclusion: Which Valve is Right for You?

The choice between resilient seated and metal seated valves depends on the operational needs:

• Opt for resilient seated valves in low-pressure, clean-water systems where sealing performance is a priority.

• Choose metal seated valves for high-pressure, high-temperature applications where durability and resistance to wear are essential.

By understanding these differences, you can make an informed decision, ensuring optimal valve performance and system longevity.

Botou Yaxing Fluid Equipment Co., Ltd is specialized in the design and manufacturing of high-quality cast iron water valves and accessories.

Our product range includes various series such as gate valves, butterfly valves, check valves, filters, hydraulic control valves, HVAC balancing valves, air release valves, rubber expansion joints, stainless steel expansion joints, and fittings.