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Product use
Suitable for sewage treatment, pulp, alumina, urban heating, petrochemical, gas, slurry, coal ash.
Product features
1. Large circulation area and small flow resistance. This is because the opening valve core is located in the ball chamber, and the fluid passes through
2. Small operating torque, turn 90 degrees to open and close, easy to operate
3. Tight seal; double eccentric metal hard seal. The structure does not affect the opening and closing, which is the most significant feature of the hemisphere valve
4. Long service life, wear-resistant sealing pair, with compensation, valve seat can be adjusted or replaced
Product executive standard
Design criteria | Structural length | Flange standard | Test and inspection |
GB/T12237-2007 | GB/T12221-2005 | GB/T9113-2000、EN1092 | GB/T13927-2008、API598 |
Main technical parameters
Nominal pressure | 0.6 | 1.0 | 1.6 | 2.5 | 4.0 | 6.4 |
Maximum working pressure at normal temperature | 0.6 | 1.0 | 1.6 | 2.5 | 4.0 | 6.4 |
Shell strength test pressure | 0.9 | 1.5 | 2.4 | 3.8 | 6.0 | 9.6 |
Airtight test pressure | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 |
High pressure seal test pressure | 0.66 | 1.1 | 0.8 | 2.75 | 4.4 | 7.1 |
Leakage rate | <0.1×DNmmm³/s(according to API598 standard) | |||||
Applicable temperature | Soft seal:-40℃~+200℃ ;Hard seal:-50℃~+600℃ | |||||
Applicable medium | Natural gas, water vapor, oil products, acids, alkalis, pulverized coal, coal ash, waste residue, mud, granular, fiber and other media | |||||
Transmission form | Turbine drive, electric drive, pneumatic drive, hydraulic drive |
Material of main parts
Valve body and valve plate
|
WCB | ZG | ZG0Cr18Ni12Mo2Ti | ZG15Cr1Mo1V |
sphere | WCB+Cr | 1Cr18Ni9TiSpecial surface treatment | 0Cr18Ni12Mo2TiSpecial surface treatment | 25Cr1Mo1VSpecial surface treatment |
Stem | 20Cr13 | 1Cr18Ni9Ti | 0Cr18Ni12Mo2Ti | 25Cr1Mo1V |
valve seat | Q235A+PTFEBuild up welding | 1Cr18Ni9T/PTFE | 0Cr18Ni12Mo2Ti/PTFE | 25Cr1Mo1V/PTFE |
filler | Flexible graphite | Flexible graphite | Flexible graphite | Flexible graphite |
Bolt | 35 | 0Cr18Ni9 | 0Cr18Ni9 | 0Cr18Ni9 |
Nut | 45 | 0Cr18Ni9 | 0Cr18Ni9 | 20CrMo |
PQ Diagram of side mounted two way seal eccentric hemisphere valve
Main connection dimensions
DN | L | D | D1 | D2 | Z-d0 | f | b | h |
40 | 165 | 150 | 110 | 84 | 4-18 | 2 | 18 | 210 |
50 | 178 | 165 | 125 | 99 | 4-18 | 2 | 20 | 230 |
65 | 190 | 185 | 145 | 118 | 4-18 | 2 | 20 | 245 |
80 | 203 | 200 | 160 | 132 | 8-18 | 2 | 20 | 265 |
100 | 229 | 220 | 180 | 156 | 8-18 | 2 | 22 | 310 |
125 | 254 | 250 | 210 | 184 | 8-18 | 2 | 22 | 350 |
150 | 267 | 285 | 240 | 211 | 8-22 | 2 | 24 | 395 |
200 | 292 | 340 | 295 | 266 | 8-22 | 2 | 24 | 435 |
250 | 330 | 395 | 350 | 319 | 12-22 | 2 | 26 | 480 |
300 | 356 | 445 | 100 | 370 | 2-22 | 2 | 26 | 550 |
350 | 381 | 505 | 460 | 429 | 16-22 | 2 | 26 | 620 |
400 | 430 | 565 | 515 | 480 | 16-26 | 2 | 26 | 670 |
450 | 502 | 615 | 565 | 530 | 20-26 | 2 | 28 | 700 |
500 | 550 | 670 | 620 | 582 | 20-26 | 2 | 25 | 760 |
600 | 660 | 780 | 725 | 682 | 20-30 | 2 | 34 | 850 |
700 | 770 | 895 | 840 | 794 | 24-30 | 5 | 34 | 920 |
800 | 880 | 1015 | 950 | 901 | 24-33 | 5 | 36 | 1100 |
900 | 1000 | 1115 | 1050 | 1001 | 28-33 | 5 | 38 | 1300 |
1000 | 1100 | 1230 | 1160 | 1112 | 28-36 | 5 | 38 | 1600 |
1200 | 1200 | 1455 | 1380 | 1328 | 32-39 | 5 | 44 | 1950 |