Multi-layer metal hard-seal butterfly valve
I. Product Overview:
The D343H multi-layer metal hard-seal butterfly valve is widely used in industrial pipelines such as metallurgy, electric power, petrochemical industry, water supply and drainage, and municipal construction where the medium temperature is ≤425℃, serving to regulate flow and cut off fluid. The disc of the multi-layer hard-seal butterfly valve is installed along the diameter direction of the pipeline. Inside the cylindrical channel of the valve body, the disc-shaped disc rotates around the axis, with a rotation angle between 0° and 90°. When rotated to 90°, the valve is in a fully open state. The multi-layer hard-seal butterfly valve adopts an eccentric metal seal structure, with the seal form being metal-to-metal seal, replaceable metal seal ring for metal seal, and stainless steel plate and graphite composite plate seal ring for metal seal. In addition to electric drive, the driving forms of the hard-seal butterfly valve also include manual, worm gear drive, pneumatic, etc.
II. Product Features:
1. The metal hard-seal butterfly valve adopts a triple-eccentric seal structure, with almost no wear between the valve seat and the disc, and has a tighter sealing function as it is used.
2. The seal ring is made of stainless steel, which has the dual advantages of metal hard seal and elastic seal, and has excellent sealing performance at both low and high temperatures, as well as characteristics such as corrosion resistance and long service life.
3. The sealing surface of the disc is surfaced with cobalt-based hard alloy, which is wear-resistant and has a long service life.
4. Large-size discs adopt a truss structure, with high strength, large flow area and small flow resistance.
5. The metal hard-seal butterfly valve has a bidirectional sealing function, and is not restricted by the flow direction of the medium or the spatial position during installation, and can be installed in any direction.
6. The driving device can be installed in multiple positions (rotated 90° or 180°), which is convenient for users to use.
III. Structural Features:
1. Unique structure, small size and light weight, flexible, labor-saving and convenient to operate;
2. Reliable sealing, can achieve gas-tight and leak-free;
3. The flow characteristic tends to linear regulation;
4. Adopts the triple-eccentric principle, making the sealing surface almost zero-wear and extending the service life of the valve;
5. Wide application range, such as can be used for media such as water, steam, oil, air, gas, etc.
6. Suitable for pipelines with different temperatures and pressure ratings below 6.4MPa, and various media such as corrosion-resistant ones.
IV. Main Connection and Overall Dimensions:
Nominal Diameter | Structural Length L | Overall Dimensions (Reference Value) | Connection (Standard Value) | Reference Weight Dt343H | ||||||||||
H | Dt343H | PN0.6MPa | PN1.0MPa | |||||||||||
mm | inch | Short | Long | H1 | A1 | B1 | D | D1 | z- d | D | D1 | z- d | ||
50 | 2 | 108 | 150 | 112 | 350 | 180 | 200 | 140 | 110 | 4-14 | 165 | 125 | 4-18 | 17 |
65 | 5/2 | 112 | 170 | 115 | 370 | 180 | 200 | 160 | 130 | 4-14 | 185 | 145 | 4-18 | 20 |
80 | 3 | 114 | 180 | 120 | 380 | 180 | 200 | 190 | 150 | 4-18 | 200 | 160 | 8-18 | 23 |
100 | 4 | 127 | 190 | 138 | 420 | 180 | 200 | 210 | 170 | 4-18 | 220 | 180 | 8-18 | 25 |
125 | 5 | 140 | 200 | 164 | 460 | 180 | 200 | 240 | 200 | 8-18 | 250 | 210 | 8-18 | 40 |
150 | 6 | 140 | 210 | 175 | 555 | 270 | 280 | 165 | 225 | 8-18 | 285 | 240 | 8-22 | 47 |
200 | 8 | 152 | 230 | 208 | 605 | 270 | 280 | 320 | 280 | 8-18 | 340 | 295 | 8-22 | 60 |
| Machinery & Equipment/Valves/Butterfly Valves | |
