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PZ73 manual type knife gate valve
design and manufacture: jb/t8691-1998
structural length: gb/t15188.2-94
flange connection: gb/t9113.1-2000 jb/t79-94
testing and acceptance: gb/t13927-92
key parts material
| valve body, upper cap | carbon steel, stainless steel |
| valve plate | stainless steel |
| stem | stainless steel |
| seal ring | rubber, ptfe, stainless steel,hard alloy |
key performance indicators
| nominal pressure | pn |
| casing test | 1.5xpn |
| leak test | 1.1xpn |
| operating temperature | rubber 80℃, ptfe≤180℃, hard sealing ≤425℃ |
| working medium | syrup, paper pulp, sewage, coal slurry, dust, slag-water mix |
profile and connection dimension unit:mm
| nominal pressure(mpa) | nominal through diameter（mm） | l | d | d1 | d2 | h | n-m | d0 |
| 1.0 | 50 | 48 | 160 | 125 | 100 | 285 | 4-m16 | 180 |
| 65 | 48 | 180 | 145 | 120 | 298 | 4-m16 | 180 | |
| 80 | 50 | 195 | 160 | 135 | 315 | 4-m16 | 220 | |
| 100 | 50 | 215 | 180 | 155 | 365 | 8-m16 | 220 | |
| 125 | 57 | 245 | 210 | 185 | 400 | 8-m16 | 230 | |
| 150 | 57 | 280 | 240 | 210 | 475 | 8-m20 | 280 | |
| 200 | 70 | 335 | 295 | 265 | 540 | 8-m20 | 360 | |
| 250 | 70 | 390 | 350 | 320 | 630 | 12-m20 | 360 | |
| 300 | 76 | 440 | 400 | 368 | 780 | 12-m20 | 400 | |
| 350 | 76 | 500 | 460 | 429 | 885 | 16-m20 | 400 | |
| 400 | 89 | 565 | 515 | 482 | 990 | 16-m22 | 400 | |
| 450 | 89 | 615 | 565 | 532 | 1100 | 20-m22 | 530 | |
| 500 | 114 | 670 | 620 | 585 | 1200 | 20-m22 | 530 | |
| 600 | 114 | 780 | 725 | 685 | 1450 | 20-m27 | 600 | |
| 700 | 130 | 895 | 940 | 800 | 1700 | 24-m27 | 600 | |
| 800 | 130 | 1010 | 950 | 905 | 2000 | 24-m30 | 680 | |
| 900 | 140 | 1110 | 1050 | 1005 | 2300 | 28-m30 | 680 |
