Pressure Seal Check Valves

Pressure Seal Valves

Pressure Seal valves are specially designed valves that provide maximum sealing, especially in high pressure and high temperature systems. Unlike conventional flanged gate valves, these valves have a gasket system that automatically seals more and more as the pressure increases. This feature offers a great advantage, especially in industries with harsh operating conditions such as oil, gas, power plants and chemical plants. The metal seal system presses the valve cover more firmly against the body as it is subjected to high pressure, increasing sealing. This ensures a safe and efficient working environment in high pressure lines.

One of the most important advantages of Pressure Seal valves is their lightweight and compact design. Compared to conventional flanged gate valves, they require less material, saving weight and space, especially in large diameter pipelines. They also show superior resistance to deformation under high temperature and pressure, thus minimizing maintenance requirements. In the long term, it offers low maintenance costs and fewer operational interruptions, increasing the efficiency of industrial businesses.

Pressure Seal valves are generally preferred in applications such as steam systems, high pressure liquid lines and boilers, turbines and pipelines used in power plants. Designed specifically for these systems, these valves are an indispensable flow control solution for industrial enterprises with their low leakage rate, long service life and high safety standards. Offering superior performance under high pressure, Pressure Seal valves are the ideal choice for businesses that want to ensure maximum safety in critical processes.

Bolted and Pressure Seal Connections

Bolted connections are one of the traditional types of connections commonly used in industrial valves, pipelines and pressure vessels. These connections utilize a system of bolts and nuts to hold flanged covers or body components together. Bolted connections are suitable for sealing medium and low pressure systems and are often preferred for ease of maintenance and installation. They are also advantageous in systems that require frequent maintenance because the removal and reinstallation of fasteners is quick and practical. However, under very high pressure and temperature, these connections can loosen or deform over time, which can pose a risk to safety and efficiency.

Pressure Seal connections are a special connection system developed specifically for high pressure and high temperature applications. This design ensures a tighter fit of the sealing elements as the pressure inside the valve or pipeline increases. Unlike traditional bolted systems, the strength of the connection increases as the pressure increases, making it preferred in power plants, chemical plants and heavy industry applications where high safety is required. Pressure Seal connections are compact and lightweight, saving material on large diameter pipelines and valves, while providing a longer life and low maintenance solution.

The main difference between these two connection types is their performance in sealing and pressure resistance. Bolted connections provide flexibility in low and medium pressure systems, while Pressure Seal connections offer a high pressure resistant and long lasting solution. In industrial plants, the choice of connection should be based on the system’s operating pressure, temperature level and maintenance requirements. While Pressure Seal connections are preferred for critical systems operating under high temperature and pressure, bolted connections offer a more practical solution for systems with lower pressure and frequent maintenance.

TYPES

• Pressure Seal Gate Valve
• Pressure Seal Globe Valve
• Pressure Seal Check Valve

FEATURES

1. There are no body-cover flanges or bolts exposed to pressure.
2. Forged steel material for all parts subjected to pressure. Optimized design for thermal fatigue required for power plant where frequent start-ups and shutdowns are mandatory.
3. Flanged valves are forged or full penetration welded with flanges integrated into the valve body.
4. Lighter design compared to bolted lid.
5. High quality packaging for reliable sealing and low emission performance.
6. The sealing surface is machined to the tightest tolerances and lowest roughness, ensuring reliable sealing and long service life.
7. High CV values.
8. OS&Y).
9. Low operating torque design.
10. Two pieces of self-aligning packing.
11. Graphite-based pressure seal with metal anti-extrusion cap.