Note: parameters are for reference only, or are not full. Valve can be used in accordance with the requirements of different pressure, material, diameter, drive, etc.. Specific please contact or online advisory contact.
Order note:
If there is no selected model, please provide detailed parameters, such as medium, temperature, pressure, caliber, material and so on. Our technicians will select for you
Two. Provided that the selected model is available according to the selected model
Three, non standard products need to provide samples or confirmed by drawings
Note: the information is for reference only, or incomplete, so please feel sorry for the inconvenience. The company can choose according to different requirements and parameters. The company has a variety of sizes, pressure, different materials, connections, drive mode, to meet the different needs of various types of gate valve. Please contact 021-6651 8677 or consult online.
|
零件名称 |
阀体、阀盖 |
阀瓣 |
阀杆 |
阀座 |
阀杆螺母 |
密封圈 |
填料 |
密封指 |
|
基本名称 |
WCB |
合金钢（特殊处理） |
不锈钢 |
合金钢（特殊处理） |
铝青铜 |
填充聚四氟乙烯 |
填充聚四氟乙烯膨胀石墨 |
耐油密封脂 |
|
抗硫型 |
抗硫不锈钢 |
抗硫密封脂 |
|
压力等级 |
常温下压力试验（MPa） |
适用温度℃ |
适用介质 |
|||||||
|
密封 |
上密封 |
壳体 |
气体密封 |
“G”型 |
“D”型 |
普通型 |
抗硫型 |
基本型 |
|
|
|
公称压力PN（MPa） |
1.6 |
1.76 |
1.76 |
2.4 |
0.6 |
-29～250 |
-46～121 |
-29～121 |
含H 2 S和Co 2 〉500Mg/m 3 的介质 |
石油、天然气、水等 |
|
2.5 |
2.75 |
2.75 |
3.75 |
0.6 |
||||||
|
4.0 |
4.4 |
4.4 |
6.0 |
0.6 |
||||||
|
6.4 |
7.04 |
7.04 |
9.6 |
0.6 |
||||||
|
10.0 |
11.0 |
11.0 |
15.0 |
0.6 |
||||||
|
16.0 |
17.6 |
17.6 |
24.0 |
0.6 |
||||||
|
公称压力PN(MPa) |
尺寸(mm) |
||||||||
|
DN(mm) |
25 |
40 |
50 |
80 |
100 |
150 |
200 |
250 |
|
|
1.6 |
L |
216 |
230 |
230 |
310 |
350 |
480 |
600 |
730 |
|
H |
243 |
265 |
346 |
409 |
484 |
521 |
594 |
621 |
|
|
H1 |
86 |
108 |
115 |
146 |
163 |
202 |
292 |
355 |
|
|
D0 |
180 |
250 |
250 |
300 |
300 |
350 |
350 |
400 |
|
|
重量(Kg) |
17 |
24 |
27 |
52 |
60 |
125 |
165 |
285 |
|
|
2.5 |
L |
216 |
230 |
230 |
310 |
350 |
480 |
600 |
730 |
|
|
H |
243 |
265 |
346 |
409 |
433 |
521 |
594 |
621 |
|
|
H1 |
86 |
108 |
115 |
146 |
163 |
202 |
292 |
355 |
|
|
D0 |
180 |
250 |
250 |
300 |
300 |
350 |
350 |
400 |
|
|
重量(Kg) |
17 |
24 |
27 |
55 |
66 |
140 |
180 |
310 |
|
4.0 |
L |
216 |
230 |
230 |
310 |
350 |
480 |
600 |
730 |
|
|
H |
243 |
265 |
346 |
409 |
433 |
521 |
594 |
621 |
|
|
H1 |
86 |
108 |
115 |
146 |
163 |
202 |
292 |
355 |
|
|
D0 |
180 |
250 |
250 |
300 |
300 |
350 |
350 |
400 |
|
|
重量(Kg) |
20 |
29 |
32 |
67 |
80 |
168 |
215 |
372 |
|
6.4 |
L |
216 |
230 |
230 |
310 |
350 |
480 |
600 |
730 |
|
|
H |
243 |
265 |
346 |
409 |
433 |
521 |
594 |
621 |
|
|
H1 |
86 |
108 |
115 |
146 |
163 |
202 |
292 |
355 |
|
|
D0 |
180 |
250 |
250 |
300 |
300 |
350 |
350 |
400 |
|
|
重量(Kg) |
20 |
29 |
32 |
67 |
80 |
168 |
215 |
372 |
|
10.0 |
L |
230 |
20 |
300 |
380 |
430 |
559 |
660 |
787 |
|
|
H |
245 |
265 |
287 |
409 |
433 |
531 |
709 |
817 |
|
|
H1 |
78 |
106 |
110 |
152 |
169 |
225 |
321 |
399 |
|
|
D0 |
200 |
250 |
300 |
350 |
250 |
400 |
500 |
500 |
|
|
重量(Kg) |
29 |
42 |
55 |
95 |
120 |
240 |
310 |
530 |
|
16.0 |
L |
230 |
260 |
300 |
390 |
450 |
|
|
|
|
|
H |
215 |
265 |
237 |
414 |
440 |
|
|
|
|
|
H1 |
78 |
105 |
110 |
155 |
175 |
|
|
|
|
|
D0 |
200 |
250 |
300 |
350 |
350 |
|
|
|
|
|
重量(Kg) |
35 |
50 |
65 |
116 |
145 |
|
|
|
2、缓压状态:阀瓣底端离开阀座密封面时，由于阀瓣底端面接近笼形套开糟处底边缘，此时阀瓣与笼形套内径形成一道密封。而没有直接放空泄压，从而达到缓和作用。
3、节流状态:阀瓣底羰离开阀座，进一步开启，小节流头处形成一级节流，高速流体经缓压节流后直接流向小阀瓣，由于阀套窗口边缘是最终节流面，高压介质直接冲刷节流通道时，阀瓣底端由于介质向改变产生涡流，缓减了介质地阀瓣的直接冲刷，从而阀座密封也避开了介质的直接冲刷，同时由于阀瓣密封面是锥形的，可以吹扫阀座密封面上的污物及杂质，保护密封面，从而延长阀门的使用寿命。
4、全开状态:阀瓣处于全开启状态时，整个阀门处于全放空状态，流体在冷门中的阻力较小，缩短了放空时间，提高了阀门的放空效果。
