Steel flanged swing check valve 19s70nzh Pn 25

Check valves 19s70nzh PN 25 are swing check valves used to prevent backflow of the working medium in pipeline systems. Their design ensures reliable sealing, durability, and the ability to operate over a wide range of temperatures and pressures.

Design and Operating Principle:

The 19s70nzh valve consists of a body, a flap (disk), a hinge on which the flap is mounted, and sealing surfaces.

• Body: Made of carbon steel.
• Flap (disk): Rotates on a hinge, opening the passage for medium flow in the forward direction.
• Hinge: Provides rotation of the flap.
• Sealing surfaces: Ensure tightness in the closed position, preventing backflow. Made of stainless steel to increase corrosion resistance.

When there is a flow of medium in the forward direction, the flap opens under pressure, allowing the flow to pass through. When attempting reverse movement of the medium, the flap is pressed against the seat of the body by reverse pressure, blocking the passage.

Advantages of the 19s70nzh valve:

• Reliable protection against backflow: Prevents emergencies related to the reverse movement of the medium in the pipeline.
• Simple design: Ensures reliability and durability.
• Wide range of applications: Can be used in various industries.

Application

The 19s70nzh valves are widely used to prevent emergencies in pipelines by blocking backflow of the medium when the direction of movement of liquid or gas changes due to pressure drops or other factors.

They are used in:

1. Main oil and gas pipelines for hydrocarbon transportation.
2. Industrial enterprises for working with various working media.
3. Water supply systems and steam installations.