Hard Back Seat Ductile Iron Wafer Butterfly Valve
Basic Info
The main difference between soft back seat wafer butterfly valve and hard back seat wafer butterfly valve is the seat material:
- 1. Compared with the hard-backed valve seat, the soft-backed valve seat has a wider contact surface with the pipe flange, and the installation and sealing performance is better, without the need for a special flange for butterfly valves;
- 2. The soft-backed valve seat is highly replaceable and does not require any special tools. The replacement can be completed;
- 3. The wall thickness of the hard-backed valve body is relatively thin, and the valve body is easily deformed. The wall thickness of the soft-backed valve body is larger than that of the hard-backed valve body, and the valve body is heavier. The different shape designs prevent the valve body from deforming. Deformation.
- 4. The vulcanization process of the soft-backed valve seat is more perfect, and there will be no phenomenon of immature rubber of the hard-backed valve seat. The rubber performance is more reliable.
- 5. The soft-backed butterfly valve has small torque.
Paraments
| SIZE | H1 | B | øD | øDl | øD2 | n-ød2 | □E | H | Ll | ||
| PN10 PN16 | CL150A | ||||||||||
| DN40 | 121 | 33 | 110 | 98.4 | 65 | 50 | 4-ø7.5 | 9 | 25 | 170 | |
| DN50 | 131 | 42 | 125 | 120.7 | 65 | 50 | 4-ø7.5 | 9 | 25 | 170 | |
| DN65 | 142 | 44.7 | 145 | 139.7 | 65 | 50 | 4-ø7.5 | 9 | 25 | 170 | |
| DN80 | 150 | 45 | 160 | 152.4 | 65 | 50 | 4-ø7.5 | 9 | 25 | 170 | |
| DN100 | 170 | 51.2 | 180 | 190.5 | 90 | 70 | 4-ø10 | ll | 25 | 215 | |
| DN125 | 184 | 54.4 | 210 | 215.9 | 90 | 70 | 4-ø10 | 14 | 25 | 215 | |
| DN150 | 200 | 55 | 240 | 241.3 | 90 | 70 | 4-ø10 | 14 | 25 | 215 | |
| DN200 | 240 | 58.8 | 295 | 298.5 | 90 | 70 | 4-ø10 | 17 | 35 | 265 | |
| DN250 | 270 | 65.7 | 350 | 355 | 362 | 125 | 102 | 4-ø12 | 22 | 35 | 350 |
| DN300 | 310 | 76 | 400 | 410 | 431.8 | 125 | 102 | 4-ø12 | 22 | 35 | 350 |
| SIZE | A | øP | 4-ø | a° | L | ø1 | ø2 | 4-d | □E | H | L1 | ∅3 | ||||||
| PN10 | PN16 | CL150 | PN10 | PN16 | CL150 | PN10 | PN16 | CL150 | ||||||||||
| DN350 | 368 | ∅460 | ø470 | ∅476.2 | 4-∅23 | 4-∅28 | 4-ø28.4 | 11.25° | 11.25° | 22.5° | 76.5 | ∅140 | ø102 | 4-ø12 | 22 | 45 | 174 | 460 |
| DN400 | 400 | ø515 | ø525 | ø539.7 | 4-ø28 | 4-ø31 | 4-ø28.4 | 11.25° | 11.25° | 11.25° | 85.7 | ø175 | ∅140 | 4-ø18 | 27 | 50 | 195 | 460 |
| DN450 | 422 | ø565 | ø585 | ø577.8 | 4-ø28 | 4-ø31 | 4-∅31.8 | 9° | 9° | 11.25° | 104.6 | ø175 | ø140 | 4-ø18 | 27 | 50 | 195 | 550 |
| DN500 | 480 | ø620 | ∅650 | ø635 | 4-∅28 | 4-ø34 | 4-ø31.8 | 9° | 9° | 9° | 130.28 | ø175 | ø140 | 4-ø18 | 32 | 55 | 195 | 600 |
| DN600 | 562 | ø725 | ø770 | ø749.3 | 4-∅31 | 4-ø37 | 4-∅35.1 | 9° | 9° | 9° | 151.36 | ∅210 | ø165 | 4-∅23 | 36 | 68 | 240 | 700 |
Manufacture Process
Certificates
