electric flanged gate valve
nominal diameter: nps 2 "~ 48" dn40 ~ 1200mm
nominal pressure: cl150 ~ 2500 pn10 ~ 420mpa
working temperature: -29 ℃ ~ 600 ℃
main material: carbon steel, stainless steel, alloy
design specifications: gb / t 12234
construction length: gb / t 12221
connection flange: jb / t 79
test and inspection: jb / t 9092
pressure - temperature: gb / t 9131
product marking: gb / t 12220
electric gate valve is widely used in petrochemicals, thermal power plants and other oil products, water vapor pipeline for access or cut off the medium pipeline opening and closing devices.
features
(1) small flow resistance. the valve body inside the media channel is straight through, the medium into a straight line flow, flow resistance.
(2) more effort when opening and closing. is compared with the shut-off valve, because either open or closed, gate direction of motion perpendicular to the media flow direction.
(3) height, opening and closing time long. gate opening and closing stroke larger, drop is carried out by the screw.
(4) water hammer phenomenon is not easy to produce. the reason is a long time off.
(5) the medium can flow in any direction on both sides, easy to install. gate valve on both sides of the channel is symmetrical.
(6) the length of the structure (the distance between the two connecting end faces of the shell) is small.
(7) sealing surface easy to wear, affecting the service life. when opening and closing, the two sealing surfaces of the gate and the valve seat frictionally slide with each other to easily cause abrasion and abrasion under the action of medium pressure, which will affect the sealing performance and shorten the service life.
(8) the price is more expensive. more contact sealing surface, processing more complex, especially the sealing surface of the gate seat is not easy to process, but more parts.
(9) simple shape, short structure length, good manufacturability and wide range of application.
(10) compact structure, good valve rigidity, smooth passage, small flow resistance, stainless steel and hard alloy sealing surface, long service life, ptfe packing, reliable sealing, light and flexible operation.
electric gate valves - performance specifications
|
model |
nominal pressure |
experimental pressure |
working temperature (℃) |
suitable media |
||
|
strength water (mpa) |
sealed (water) air (mpa) |
low pressure seal air (mpa) |
||||
|
z41h-16c |
1.6 |
2.4 |
1.8 |
0.6 |
≤425 |
nitric acids |
|
z41w-25p (r) |
2.5 |
3.8 |
2.8 |
0.6 |
≤200 |
acetic acid |
|
z41w-40p (r) |
4.0 |
6.0 |
4.4 |
0.6 |
≤200 |
nitric acids |
|
z41w-64p (r) |
6.4 |
9.6 |
7.0 |
0.6 |
≤200 |
acetic acid |
electric gate valve - the main parts material
|
body / bonnet |
zgicr18ni9ti |
zg00cr18ni10 |
zg1cr18ni12m02ti |
zg00cr17ni14m02 |
wcb |
|
part name |
zgicr18ni9tit series |
zg00cr18ni10 series |
zg1cr18ni12m02ti series |
zg00cr17ni14m02 series |
wcb series |
|
gate |
zgicr18ni9ti |
zg00cr18ni10 |
zg1cr18ni12m02ti |
zg00cr17ni14m02 |
1cr13 |
|
valve stem |
1cr18ni9ti |
00cr18ni10 |
1cr18ni12m02ti |
00cr17ni14m02 |
1cr13 |
|
filler |
ptfe braid |
ptfe braid |
ptfe braid |
ptfe braid |
graphite |
|
gasket |
304l ptfe |
304l ptfe |
316 ptfe |
316l ptfe |
graphite |
|
gland |
zgicr18ni9ti |
zg00cr18ni10 |
zg1cr18ni12m02ti |
zg00cr17ni14m02 series |
wcb |
|
packing pressure ring |
1cr18ni9ti |
00cr18ni10 |
1cr18ni12m02ti |
00cr17ni14m02 |
1cr13 |
|
bolt |
1cr17ni2 |
1cr17ni2 |
1cr17ni2 |
1cr17ni2 |
35crmoa |
|
nut |
1cr18ni9ti |
1cr18ni9ti |
1cr18ni9ti |
1cr18ni9ti |
45 |
the main dimensions and weight
| pn (mpa) | dn (mm) | l | d | d1 | d2 | b | z-ød | d3 | h | h1 | d0 |
weight (kg) |
| 1.6 | 40 | 240 | 150 | 110 | 88 | 20 | 4-ø17.5 | 164 | 602 | 602 | 300 | 68 |
| 50 | 250 | 165 | 125 | 102 | 20 | 4-ø17.5 | 164 | 610 | 610 | 300 | 69 | |
| 65 | 270 | 185 | 145 | 122 | 20 | 4-ø17.5 | 164 | 612 | 612 | 300 | 80 | |
| 80 | 280 | 200 | 160 | 133 | 20 | 8-ø17.5 | 195 | 690 | 690 | 300 | 83 | |
| 100 | 300 | 220 | 180 | 158 | 20 | 8-ø17.5 | 220 | 833 | 833 | 300 | 94 | |
| 125 | 325 | 250 | 210 | 184 | 22 | 8-ø17.5 | 268 | 867 | 876 | 300 | 125 | |
| 150 | 350 | 285 | 240 | 212 | 24 | 8-ø22 | 280 | 958 | 958 | 300 | 160 | |
| 200 | 400 | 340 | 295 | 268 | 26 | 12-ø22 | 370 | 1096 | 1096 | 300 | 225 | |
| 250 | 450 | 405 | 355 | 320 | 30 | 12-ø26 | 460 | 1244 | 1244 | 300 | 348 | |
| 300 | 500 | 460 | 410 | 370 | 30 | 12-ø26 | 530 | 1430 | 1474 | 400 | 485 | |
| 350 | 550 | 520 | 470 | 430 | 34 | 16-ø26 | 610 | 1565 | 1663 | 400 | 696 | |
| 400 | 600 | 580 | 525 | 482 | 36 | 16-ø30 | 710 | 1735 | 1886 | 400 | 1000 | |
| 500 | 700 | 715 | 650 | 585 | 44 | 20-ø33 | 5860 | 1961 | 2181 | 400 | 1064 |