Product name: D373H worm gear drive wafer hard seal butterfly valve

Model: D373H

Diameter: 50-1200mm

Material: cast steel, stainless steel

Pressure: 1.0MPa ～ 2.5MPa

Introduction to hard seal butterfly valve: it adopts precise J-shaped elastic seal ring and 3 eccentric multi-layer metal hard seal structure. Metallurgy, electric power, petrochemical, water supply and drainage, urban construction and other industries with moderate temperature lower than 425 ° C. In the pipeline, it is used to regulate the flow and volume, and to transport and cut off the fluid. The valve adopts three-eccentric structure. The hardness of the sealing surface of the valve seat and disc is different from that of stainless steel, which has excellent corrosion resistance and long service life. The valve has two-way sealing function and can be used for military and postal purposes. Meet the accuracy requirements of the national GB/T13927-92 valve pressure test.

Product features of hard seal butterfly valve

1. The valve adopts a three-eccentric sealing structure. The valve seat and butterfly plate are almost free of wear, and it has a sealing function that is more and more tight.

2. The sealing ring is made of stainless steel, which has the dual advantages of metal hard seal and elastic seal. It has excellent sealing performance, corrosion resistance, long service life and other characteristics regardless of low temperature and high temperature.

3. The drive device can be installed in multiple positions (rotating 90 ° or 180 °) for the convenience of users.

4. The sealing surface of the disc plate is made of hardfacing cobalt-based cemented carbide, which is wear-resistant and has a long service life

5. The large size butterfly plate adopts quilted frame structure with high strength, large flow area and small flow resistance.

6. The valve has the function of two-way sealing. It can be installed in any direction without the restriction of medium flow direction or the influence of space position.

Main technical parameters of D373H worm gear drive wafer hard seal butterfly valve

Nominal diameter DN (mm) 50 ～ 2000 Nominal pharmacology PN (MPa) 0.6 1.0 1.6 2.5 Sealing test (MPa) 0.66 1.1 1.76 2.75 Strength test (MPa) 0.9 1.5 2.4 3.75 Applicable temperature carbon steel: - 29 ℃ ～ 425 ℃ stainless steel: - 40 ℃ ～ 650 ℃ Applicable medium water, air, natural gas, oil and weak corrosive fluid leakage rate conforms to GB/T13927-92 Standard drive mode worm gear drive, electric, pneumatic, hydraulic