衬氟隔膜阀结构特点:
1、复合隔膜将阀体下部内腔与阀盖内腔隔开,并与之形成直流通道,使隔膜上部的阀杆、阀瓣等内件与介质完全隔离,省去填料密封结构,介质的内漏和外漏可同时避免。
2、做为执行元件的膜片由于频繁的启闭易产生疲劳断裂,应视工况、介质特性进行定期更换。
3、塑料的防腐性能及推荐使用温度见“阀门及管路附件用塑料衬里性能表”。
衬氟隔膜阀主要零件的材料说明:
序号 |
零件名称 |
灰铸铁 |
铸钢 |
不锈耐酸铸钢 |
超低碳不锈耐酸铸钢 |
||
Z |
C |
P |
R |
PL |
PL |
||
1 |
阀体/阀盖 |
HT250 |
WCB |
CF8 |
CF8M |
CF3 |
CF3M |
2 |
阀瓣/阀杆 |
35 |
1Cr13 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
00Cr18Ni10 |
00Cr17Ni14Mo2 |
3 |
衬里/阀座 |
PCTEF(F3)、FEP(F46)、PFA(可溶性F4)、PP、PO |
|||||
4 |
隔膜 |
PEP(F46)/CR(氯丁橡胶)、PFA(可溶性F4)/FPDM(乙丙橡胶) |
|||||
5 |
支架 |
PTFE(F4) |
CF8 |
CF8 |
|||
6 |
阀杆螺母 |
ZCuAl10Fe3 |
ZCuAl10Fe3 |
ZCuAl10Fe3 |
|||
7 |
紧固螺栓 |
35 |
1Cr17Ni2 |
1Cr18Ni9Ti |
|||
8 |
螺母 |
45 |
0Cr18Ni9 |
0Cr18Ni9 |
|||
9 |
手轮 |
WCB |
WCB |
WCB |
衬氟隔膜阀主要外形尺寸:
公称通径 |
标准值 |
参考值 |
||||||||||
DN(mm) |
NPS(inch) |
L |
D |
D1 |
D2 |
f |
b |
Z-φd |
W |
D0 |
H |
WT(kg) |
PN0.6MPa |
||||||||||||
15 |
1/2 |
130 |
80 |
55 |
40 |
2 |
12 |
4-φ12 |
120 |
|
80 |
1.6 |
20 |
3/4 |
130 |
90 |
65 |
50 |
2 |
14 |
4-φ12 |
120 |
|
90 |
2.4 |
25 |
1 |
140 |
100 |
75 |
60 |
2 |
14 |
4-φ12 |
160 |
|
100 |
3.4 |
32 |
11/4 |
165 |
120 |
90 |
70 |
2 |
16 |
4-φ14 |
160 |
|
110 |
4.8 |
40 |
11/2 |
165 |
130 |
100 |
80 |
3 |
16 |
4-φ14 |
200 |
|
120 |
6.0 |
50 |
2 |
203 |
140 |
110 |
90 |
3 |
16 |
4-φ14 |
250 |
|
135 |
8.8 |
65 |
21/2 |
222 |
160 |
130 |
110 |
3 |
16 |
4-φ14 |
250 |
|
145 |
11.5 |
80 |
3 |
241 |
185 |
150 |
125 |
3 |
18 |
4-φ18 |
300 |
|
180 |
15.2 |
100 |
4 |
305 |
205 |
170 |
145 |
3 |
18 |
4-φ18 |
300 |
|
195 |
18.8 |
125 |
5 |
356 |
235 |
200 |
175 |
3 |
20 |
8-φ18 |
350 |
|
210 |
22.5 |
150 |
6 |
394 |
260 |
225 |
200 |
3 |
20 |
8-φ18 |
|
200 |
450 |
48 |
200 |
8 |
457 |
315 |
280 |
255 |
3 |
22 |
8-φ18 |
|
200 |
490 |
65 |
250 |
10 |
533 |
370 |
335 |
310 |
3 |
24 |
12-φ18 |
|
240 |
550 |
88 |
300 |
12 |
610 |
435 |
395 |
362 |
4 |
24 |
12-φ23 |
|
280 |
600 |
125 |
350 |
14 |
686 |
485 |
445 |
412 |
4 |
26 |
12-φ23 |
|
280 |
675 |
185 |
400 |
16 |
762 |
535 |
495 |
462 |
4 |
28 |
16-φ23 |
|
320 |
780 |
255 |
450 |
18 |
864 |
590 |
550 |
518 |
4 |
28 |
16-φ23 |
|
360 |
820 |
320 |
500 |
20 |
914 |
640 |
600 |
568 |
4 |
30 |
16-φ23 |
|
360 |
910 |
405 |
公称通径 |
标准值 |
参考值 |
||||||||||
DN(mm) |
NPS(inch) |
L |
D |
D1 |
D2 |
f |
b |
Z-φd |
D0 |
H |
H1 |
WT(kg) |
PN1.0MPa |
||||||||||||
15 |
1/2 |
108 |
95 |
65 |
45 |
2 |
14 |
4-φ14 |
100 |
105 |
110 |
3.5 |
20 |
3/4 |
117 |
105 |
75 |
55 |
2 |
16 |
4-φ14 |
100 |
115 |
125 |
4 |
25 |
1 |
127 |
115 |
85 |
65 |
2 |
16 |
4-φ14 |
120 |
120 |
135 |
5.5 |
32 |
11/4 |
146 |
135 |
100 |
78 |
2 |
18 |
4-φ18 |
120 |
125 |
150 |
8 |
40 |
11/2 |
159 |
145 |
110 |
85 |
3 |
18 |
4-φ18 |
140 |
135 |
175 |
11 |
50 |
2 |
190 |
160 |
125 |
100 |
3 |
20 |
4-φ18 |
140 |
155 |
195 |
14 |
65 |
21/2 |
206 |
180 |
145 |
120 |
3 |
20 |
4-φ18 |
200 |
170 |
200 |
23 |
80 |
3 |
254 |
195 |
160 |
135 |
3 |
22 |
4-φ18 |
200 |
200 |
255 |
29 |
100 |
4 |
305 |
215 |
180 |
155 |
3 |
22 |
8-φ18 |
280 |
270 |
325 |
46 |
125 |
5 |
356 |
245 |
210 |
185 |
3 |
24 |
8-φ18 |
320 |
335 |
405 |
70 |
150 |
6 |
406 |
280 |
240 |
210 |
3 |
24 |
8-φ23 |
320 |
370 |
450 |
95 |
200 |
8 |
521 |
335 |
295 |
265 |
3 |
26 |
8-φ23 |
400 |
480 |
600 |
170 |
250 |
10 |
635 |
390 |
350 |
320 |
3 |
28 |
12-φ23 |
500 |
545 |
620 |
270 |
300 |
12 |
749 |
440 |
400 |
368 |
4 |
28 |
12-φ23 |
500 |
585 |
680 |
320 |