Vertical check valve H42H-16C DN80

Vertical check valve H42H-16C DN80Detailed introduction:

Model meaning

H: Represents the type of return valve.

4: The representative connection method is flange connection.

2: The representative structural form is vertical.

H: The representative valve seat material is stainless steel alloy.

16: The representative nominal pressure is 1.6MPa.

C: The representative valve body material is carbon steel.

DN80: indicates a nominal diameter of 80mm.

working principle

Normally in a closed state, when the pressure of the medium at the inlet of the pipeline overcomes the resistance of the spring, the valve opens and the medium can flow from the inlet to the outlet; When the pressure of the medium at the inlet end is lower than that at the outlet end, the spring pushes the valve core towards the valve seat to close the valve, preventing the medium from flowing back and thus playing a check role.

execution standard

Design and Manufacturing: GB/T 12235.

Structural length: GB/T 12221.

Connecting flange: JB/T 79-1994.

Testing and Inspection: JB/T 9092-1999.

performance parameters

Nominal pressure: 1.6MPa.

Test pressure: The shell strength test pressure is 2.4MPa, and the sealing test pressure is 1.76MPa.

Working temperature: ≤ 425 ℃.

Applicable media: water, oil, etc.

Main component materials

Valve body and disc: made of carbon steel material.

Directional valve: made of carbon steel material.

Sealing surface: Welding D507, with good wear resistance, high temperature resistance, and abrasion resistance.

Vertical check valve H42H-16C DN80feature

Reasonable structural design: The valve disc rotates around the pin axis outside the valve seat, reducing the violent impact that occurs when closing; The connection between the pin shaft and the valve disc adopts an internal pin shaft structure, reducing external leakage points and making it more reliable to use.

Reliable sealing performance: The sealing surfaces of the valve disc and seat are made of hard alloy welding, which is wear-resistant, high-temperature resistant, has good scratch resistance, and has a long service life, effectively ensuring the sealing performance of the valve.

Widely applicable: Various piping flange standards and flange sealing surface types can be adopted to meet various engineering needs and user requirements; The valve body material variety is complete, and the packing and gasket are reasonably selected according to actual working conditions or user requirements, which can be suitable for various pressure, temperature, and medium working conditions.

Installation key points

Installation position: Generally installed on vertical pipelines, with the installation arrow pointing upwards to allow the medium to flush open the valve disc from bottom to top.

Pipeline connection: Before installation, it is necessary to ensure that the pipeline is clean and free of dirt and impurities. The flange size of the pipeline connected to the check valve should match the flange size of the check valve, and bolts should be evenly tightened to avoid water leakage or detachment.

Valve direction: Adjust the direction of the check valve according to the fluid flow direction to ensure consistency with the fluid flow direction, in order to achieve normal check function.