Products design feature :
The valve can be widely used in the generation system of residual heat of coal gas and steametr system of blessding steam type,performing for the safeguard of the system,lt features rapid shutting and olw flow rater,as well as the stop performance can be sealed,thus it can take place of ele-ctrical stop butterfly valve and check valve in the design of the system.
Puropse :
The valve is one kind of emergent-cutting valve to protect the safety of the system,which is mainly applied in parallelled machine set of the model electricity plant and generator set of residual heat of coal gas.
Characters :
1.The time for rapid shutting can reach 0.5 seconds,as weel as safe and reliable for emergent cutting.
2.The structure employs triple-eccentricity metal seal,it is flexible for starting and closing and zero leakage for its seal.
3.The medium with normal temperature can emply double-eccentricity soft seal,which featrues low cost and reliable seal.
4.The inertia impact on the valve can be avoided effectively due to buffer at the end of the valve.
5.the fast close can be performed by spring of accumulator,both modes are safe and reliable.
Adoption standard:
The design refers to £ºGB/ 12238-989£»JB/ 5299£»JB/527-997
Connecting flange£ºGB/ 72416-1998£»GB/9113-2000£»
Face to face£ºGB/ 12221- 989£»
Test pressuer£ºGB/ 13927-992
Main technique number
Nominal pressure(MPa) |
0.6 |
1.0 |
1.6 |
2.5 |
|
Nominal diameter(mm) |
400¡«1600 |
||||
Test pressure(MPa) |
Strength test |
O.9 |
1 .5 |
2.4 |
3.75 |
Seal test |
O.66 |
1.1 |
1.76 |
2.75 |
|
Working pressure |
O.6 |
1.0 |
1.6 |
||
Paalicable medium |
Water,Steam,Coal gas |
||||
Appropriate temperature |
ÈíÃܷ⣺¡Ü 80%Ó²Ãܷ⣺¡Ü25% |
||||
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KD7t44/3/5/PMain size of outside
DN |
PN |
L |
L1 |
L2 |
H1 |
H2 |
Falnge Connection dimension |
Note |
400 |
0.6 |
216 |
966 |
1449 |
320 |
780 |
GB/T 17241 |
|
1.0 |
216 |
966 |
1449 |
330 |
785 |
|||
1.6 |
216 |
966 |
1449 |
345 |
800 |
|||
450 |
0.6 |
222 |
966 |
1449 |
370 |
805 |
||
1.0 |
222 |
966 |
1449 |
380 |
810 |
|||
1.6 |
222 |
966 |
1449 |
395 |
835 |
|||
500 |
0.6 |
229 |
966 |
1449 |
400 |
898 |
||
1.0 |
229 |
966 |
1449 |
410 |
898 |
|||
1.6 |
229 |
966 |
1449 |
425 |
898 |
|||
600 |
0.6 |
267 |
966 |
1449 |
440 |
898 |
||
1.0 |
267 |
966 |
1449 |
460 |
920 |
|||
1,6 |
267 |
1150 |
1820 |
470 |
1020 |
|||
700 |
0.6 |
292 |
966 |
1449 |
436 |
950 |
||
1.0 |
292 |
1150 |
1820 |
550 |
1075 |
|||
1,6 |
292 |
1150 |
1820 |
570 |
1100 |
|||
0.6 |
318 |
1150 |
1820 |
625 |
1142 |
|||
800 |
1.0 |
31 8 |
1150 |
1820 |
640 |
1158 |
||
1.6 |
31 8 |
1150 |
1820 |
660 |
1183 |
|||
900 |
0.6 |
330 |
1150 |
1820 |
700 |
1190 |
||
1.0 |
330 |
1150 |
1820 |
710 |
1210 |
|||
1.6 |
330 |
1150 |
1820 |
725 |
1239 |
|||
1000 |
0.6 |
410 |
1150 |
1820 |
760 |
1250 |
||
1.0 |
410 |
1150 |
1820 |
770 |
1275 |
|||
1.6 |
410 |
1360 |
2180 |
790 |
1306 |
|||
1200 |
0.6 |
470 |
1150 |
1820 |
875 |
1360 |
||
1.0 |
470 |
1360 |
2180 |
890 |
1385 |
|||
1.6 |
470 |
1360 |
2180 |
91 5 |
1418 |
|||
1400 |
0.6 |
530 |
1360 |
2180 |
1000 |
1478 |
||
1.0 |
530 |
1360 |
2180 |
1020 |
1510 |
|||
1.6 |
530 |
1360 |
2180 |
1045 |
1546 |
|||
1600 |
0.6 |
600 |
1360 |
2180 |
1120 |
1599 |
||
1.0 |
600 |
1360 |
2180 |
1140 |
1639 |
|||
1.6 |
600 |
1610 |
2520 |
1170 |
1738 |
No£ºTheproduction of the seriesGB12221-89 ranging DN250-3000 can be done according to the requirements of customer,lt should be indicated whether equipped with foot or not for the range of DN1200-3000
