upper and lower display discharge valve
nominal diameter: dn50 ~ 150mm
nominal pressure: pn1.0 ~ 6.4mpa
suitable temperature: -29 ~ 650 ℃
main material: wcb, zg1cr18ni9ti, zg1cr18ni12mo2ti, cf8, cf8m, cf3, cf3m
design and manufacture: gb12234-89
structure length: gb12221-89
flange size: jb / t79-94
inspection and test: gb13927
manual discharge valve performance and purpose
the valve is easy to operate, open the freedom, flexible and reliable movement; valve assembly and maintenance simple, reasonable sealing structure, sealing ring replacement convenient and practical.
manual discharge valve structure and principle:
the valve is mainly composed of 1. valve body, 2. valve flap, 3. seal, 4. stem, 5. bracket, 6. valve gland, 7. hand wheel, 8. law blue, 9. nut, 10. set screws and other components, handwheel clockwise, the valve closed, the stem moves upward, the valve is on the exhibition, the handwheel clockwise, the valve closed, the valve stem down, the valve for the exhibition valve
manual discharge valve main parts material
| part name | zg1cr18ni9ti series | zg00cr18ni10 series | zg1cr18ni12mo 2 ti series | zg00cr17ni14mo 2 series | wcb series |
| body / bonnet | zg1cr18ni9ti | zg00cr18ni10 | zg1cr18ni12mo 2 ti | zg00cr17ni14mo 2 | wcb |
| valve stem | zg1cr18ni9ti | zg00cr18ni10 | zg1cr18ni12mo 2 ti | zg00cr17ni14mo 2 | wcb |
| disc | zg1cr18ni9ti | zg00cr18ni10 | zg1cr18ni12mo 2 ti | zg00cr17ni14mo 2 | wcb |
| gasket | 304 ptfe | 304l ptfe | 316 ptfe | 316l ptfe | graphite 304 |
| stud | 1cr17ni2 | 1cr17ni2 | 1cr17ni2 | 1cr17ni2 | 35crmoa |
| nut | 1cr18ni9ti | 1cr18ni9ti | 1cr18ni9ti | 1cr18ni9ti | 45 |
upper discharge valve connection size
| dn | on the flange | on the flange | under the flange | sealing seat | ||
| d1 | d2 | d3 | d4 | d5 | d6 | |
| 25 | 115 | 80 | 115 | 85 | - | - |
| 32 | 135 | 100 | 135 | 100 | - | - |
| 40 | 145 | 110 | 145 | 110 | 80 | 60 |
| 50 | 165 | 125 | 160 | 125 | 85 | 70 |
| 65 | 180 | 145 | 180 | 145 | 130 | 85 |
| 80 | 195 | 160 | 195 | 160 | 135 | 95 |
| 100 | 215 | 180 | 215 | 180 | 160 | 130 |
| 125 | 245 | 210 | 245 | 210 | 160 | 140 |
| 150 | 280 | 240 | 280 | 240 | 185 | 165 |
| 200 | 335 | 295 | 335 | 295 | / | / |
unfolded discharge valve connection size
| dn | on the flange | on the flange | under the flange | sealing seat | ||
| d1 | d2 | d3 | d4 | d5 | d6 | |
| 25 | 115 | 85 | 135 | 100 | 70 | 40 |
| 32 | 135 | 100 | 145 | 110 | 75 | 55 |
| 40 | 145 | 110 | 160 | 125 | 100 | 65 |
| 50 | 165 | 125 | 180 | 145 | 85 | 70 |
| 65 | 180 | 145 | 195 | 160 | 135 | 90 |
| 80 | 195 | 160 | 215 | 180 | 155 | 130 |
| 100 | 215 | 180 | 245 | 210 | 195 | 135 |
| 125 | 245 | 210 | 280 | 245 | 180 | 145 |
| 150 | 280 | 240 | 335 | 295 | 210 | 185 |
| 200 | 335 | 295 | 405 | 355 | / | / |