Product Description
The D343H Hard-Sealed Flanged Butterfly Valve features a precision J-shaped elastic seal ring and a triple-eccentric, multi-layer metal hard-seal structure. It is widely used in industrial pipelines in the metallurgy, power generation, petrochemical, water supply and drainage, and municipal construction sectors—where the medium temperature does not exceed 325℃—for regulating flow and shutting off fluid.
Product Features
- This valve features a triple-offset sealing design, resulting in virtually no wear between the seat and the disc, and providing a self-tightening seal.
- The sealing rings are made of stainless steel, combining the dual advantages of a metal hard seal and an elastic seal. They offer excellent sealing performance under both low and high temperatures, and are characterized by corrosion resistance and a long service life.
- The sealing surface of the disc is overlaid with cobalt-based cemented carbide, making it wear-resistant and ensuring a long service life.
- Large-size butterfly valves feature a truss structure, offering high strength, a large flow area, and low flow resistance.
Product Specifications
Product Model | D343H-16C |
Valve Body Material | Cast Steel |
Nominal Pressure | ≤1.6 MPa |
Applicable Media | Water, steam, oil, etc. |
Operating Temperature | ≤325℃ |
Product Size Guide
DN | L | D | D1 | D2 | n-d |
50 | 108 | 165 | 125 | 99 | 4-18 |
65 | 112 | 185 | 145 | 118 | 4-18 |
80 | 114 | 200 | 160 | 132 | 8-18 |
100 | 127 | 220 | 180 | 156 | 8-18 |
125 | 140 | 250 | 210 | 184 | 8-18 |
150 | 140 | 285 | 240 | 211 | 8-22 |
200 | 152 | 340 | 295 | 266 | 12-22 |
250 | 165 | 405 | 355 | 319 | 12-26 |
300 | 178 | 460 | 410 | 370 | 12-26 |
350 | 190 | 520 | 470 | 429 | 16-26 |
400 | 216 | 580 | 525 | 480 | 16-30 |
450 | 222 | 640 | 585 | 548 | 20-30 |
500 | 229 | 715 | 650 | 609 | 20-33 |
600 | 267 | 840 | 770 | 720 | 20-36 |
