Product Model: H41W/H

Nominal Diameter: DN15~350 mm 

Nominal Pressure: PN1.6~6.4 MPa

Applicable Temperature: -20 to 350°C

Main Material: WCB, CF8, CF8M, CF3M

Application: Power stations, natural gas, ammonia, refrigeration systems, heat transfer oil systems, hot water.

Product Overview
When the medium enters the valve body in the direction indicated by the arrow, the medium's pressure acts on the disc, generating an upward thrust. When the medium's thrust is greater than the gravity of the disc, the check valve opens. When the force of the downstream medium pressure acting on the disc plus the disc's own gravity is greater than the force of the upstream pressure acting on the disc, the check valve closes, preventing the medium from flowing backward.

Design & Manufacturing Standards

1. Design and manufacturing standards are in accordance with: DIN 3356;

2. Face-to-face dimensions are in accordance with: DIN 3202;

3. Flange end dimensions are in accordance with: DIN 2543-2545;

4. Butt weld end dimensions are in accordance with: DIN 3239;

5. Inspection and testing are in accordance with: DIN 3230.

Product Features

1. The DIN standard lift check valve features a reasonable structure, reliable sealing, excellent performance, and an attractive appearance.

2. The sealing surface is hardfaced with Co-based hard alloy, offering good wear resistance, corrosion resistance, and anti-friction performance, ensuring a long service life.

3. The stem undergoes quenching and tempering and surface nitriding treatments, providing good corrosion resistance and anti-friction performance.

4. Double sealing for more reliable performance.

5. The stem lifting position indication is more intuitive.

6. Part materials, flange, and butt weld dimensions can be reasonably selected according to actual working conditions or user requirements to meet various engineering needs.