The D343H hard sealed stainless steel butterfly valve seat sealing ring is composed of multiple layers of stainless steel sheets on both sides of a soft T-shaped sealing ring.
The sealing surface between the valve plate and the valve seat is a slanted cone structure, and a heat-resistant and corrosion-resistant alloy material is welded on the slanted cone surface of the valve plate;
The structure in which the spring fixed between the adjusting ring pressure plate and the adjusting bolt on the pressure plate are assembled together. This structure effectively compensates for the tolerance zone between the shaft sleeve and the valve body, as well as the elastic deformation of the valve stem under medium pressure, solving the sealing problem of the valve in the bi-directional exchange of medium transportation process.
D43H and D343H metal hard sealed stainless steel butterfly valves use precision J-shaped elastic sealing rings and three eccentric multi-level metal hard sealing structures. They are widely used in industrial pipelines such as metallurgy, power, petrochemicals, water supply and drainage, and municipal construction where the medium temperature is ≤ 425 ℃, for regulating flow and carrying fluids. D343H Advantages of Metal Hard Sealed Stainless Steel Butterfly Valve: 1. The hard sealed stainless steel butterfly valve adopts a three eccentric sealing structure, with almost no wear on the valve seat and butterfly plate, and has a sealing function that becomes tighter as viewed.
The sealing ring is made of stainless steel, which has the dual advantages of metal hard sealing and elastic sealing, and has excellent sealing performance in both low and high temperatures, corrosion resistance, and long service life. Impact, can be installed in any direction. 6. The drive device can be installed in multiple stations (rotated 90 ° or 180 °), Easy for users to use.
Features:
This valve adopts a three eccentric sealing structure, with almost no wear on the valve seat and butterfly plate, and has a sealing function that becomes tighter as viewed.
The valve body is made of stainless steel, which has the dual advantages of metal hard sealing and elastic sealing. It has excellent sealing performance in both low and high temperatures, corrosion resistance, and long service life.
The sealing surface of the disc plate is made of welded cobalt based hard alloy, which is wear-resistant and has a long service life. The large-sized disc plate adopts a frame structure with high strength, large overcurrent area, and low flow resistance.
This valve has a bidirectional sealing function, which is not limited by the flow direction of the medium or the spatial position during installation, and can be installed in any direction.
The drive device can be installed in multiple stations (rotated 90 ° or 180 °) for easy user use.
Main technical parameters: nominal diameter DN (mm) 50-2000 nominal pharmacological 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 weakly corrosive fluid leakage rate in accordance with GB/T13927-92 standard driving mode worm gear transmission, electric, pneumatic, hydraulic four, hard sealed stainless steel butterfly valve main component material name material valve body WCB, alloy steel, stainless steel QT450-10 Butterfly Plate WCB, Alloy Steel, Stainless Steel, QT450-10 Valve Shaft 2Cr13 Stainless Steel, Alloy Steel Seal Ring Stainless Steel Ring Packing Flexible Graphite V, Adopting Standard Manufacturing Standard JB/T 8527-97 Flange Standard GB9113-2000 Structural Length Standard GB12221-89 Inspection Standard GB/T 13927-92 D343H Hard Seal Stainless Steel Butterfly Valve Performance Parameters Model D343H-10 D343H-16 D343H-25 D343H-40 D343H-10P D343H-16P D343H-25P D343H-40P D343H-10R D343H-16R D343H-25R D343H-40R Working pressure (MPa) 1.0~4.0 Suitable temperature (℃) ≤ 425 ≤ 200 Suitable media Water, oil or non corrosive media Nitric acid media Acetic acid media Material Valve body, butterfly plate WCB CF8/304 CF3M/316L valve stem 2Cr13 304 316L valve body sealing surface welding 507- butterfly plate sealing surface 304+flexible graphite 304+PTFE packing Flexible graphite PTFE Our company has introduced advanced foreign technology and adopts precision J-shaped elastic sealing rings and three eccentric multi-level metal hard sealing structures, which are widely used in industrial pipelines such as metallurgy, power, petrochemicals, water supply and drainage, and municipal construction with medium temperature ≤ 425 ℃, for regulating flow and carrying fluids.
The hard sealed stainless steel butterfly valve adopts a three eccentric structure, and the valve seat and disc sealing surface are made of different hardness and stainless steel, which has good corrosion resistance and long service life. This valve has a bi-directional sealing function and meets the national GB/T13927-92 valve pressure test standard.
