The metal-seated sliding valve is designed for use in systems operating under high temperature and pressure. In this type of valve, the sealing surfaces are made of metal, providing high resistance to wear. The valve’s slide is moved up and down to either open or close the fluid passage.

Additionally, both sides of the slide are supported by metal seals. This design provides secure sealing for challenging fluids. Thanks to the metal seal, a longer lifespan can be achieved compared to elastomer-seated valves. The risk of deformation in high-temperature fluctuations is minimized.

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How Does a Metal-Seated Sliding Valve Work?

When the system is activated, the slide is pulled upwards with the help of a shaft, allowing the fluid to pass through. When the valve is closed, the slide is lowered, completely stopping the flow. The sealing is achieved through the metal seats located between the slide and the body of the valve.

In this type of valve, the sealing surfaces make contact in a metal-to-metal configuration. This ensures durability even in high-pressure systems. The structural integrity of the valve is maintained under mechanical loads. Additionally, the valve body is typically made from cast iron or stainless steel, offering strength and resistance to corrosion.

Where are Metal-Seated Sliding Valves Used?

Metal-seated sliding valves are commonly used in industrial and heavy-duty facilities. They are frequently preferred in chemical plants, especially in pipelines that transport aggressive chemicals. Additionally, these valves can be safely applied in steam lines at power plants.

They are used in the oil and gas industry, particularly in areas that require operation under high temperature and pressure. In water treatment systems, they are preferred for controlling fluids containing sludge and solid particles. Additionally, they can be used in heavy-duty conditions, such as in mining facilities and steel mills.

Metal-Seated Sliding Valve Product Features

Body: Cast Iron or Stainless Steel
Slide: Hardened Stainless Steel
Seal: Metal-to-Metal Sealing
Connection Type: Flanged (Compliant with DIN or ANSI standards)
Pressure Class: PN10, PN16, PN25
Operating Temperature: -10°C to +400°C
Size Range: DN50 – DN600

Why Should Metal-Seated Sliding Valves Be Preferred?

Metal-seated sliding valves offer long service life and high durability. They are especially reliable in facilities where temperature fluctuations are frequent, ensuring safe operation even under challenging conditions. Additionally, they provide effective sealing in environments where elastomer seals may fail, meeting the sealing requirements in harsh or aggressive fluid applications.

Thanks to their ability to operate under high pressure, metal-seated sliding valves enhance safety levels. Additionally, they extend maintenance intervals and reduce the risk of failure. Their compatibility with remote control systems is another reason they are often preferred, allowing for convenient and efficient operation in modern industrial setups.

For more valve types, you can visit the UNOX valve category. High-performance solutions are offered, combining both quality and reliability for optimal results.