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膠止回閥概述：
止回閥是一種依靠介質(zhì)本身的流動而自動啟閉閥瓣用來阻止介質(zhì)逆向流動的自動閥門。
好施的襯里止回閥基本類型有四種：H41型法蘭連接直通升降式止回閥和H42型升降立式止回閥、H44立式止回閥、H76旋啟式止回閥。
襯膠止回閥設(shè)計規(guī)范
遵循GB/T 12235，GB/T 12236，API 6D標準
襯膠止回閥主要零部件材料表：
|
序號 |
零件名稱 |
灰鑄鐵 |
鑄鋼 |
不銹耐酸鑄鋼 |
超低碳不銹耐酸鑄鋼 |
||
|
Z |
C |
P |
R |
PL |
RL |
||
|
1 |
閥體/閥蓋 |
HT250 |
WCB |
CF8 |
CF8M |
CF3 |
CF3M |
|
2 |
閥瓣/閥桿 |
35 |
1Cr13 |
1Cr18Ni9 |
1Cr18Ni12Mo2Ti |
00Cr18Ni10 |
00Cr17Ni14Mo2 |
|
3 |
襯里/閥座 |
PCTEF(F3),FEP(F46),PFA(可溶F4),PP,PO |
|||||
|
4 |
緊固螺栓 |
WCB |
1Cr17Ni2 |
1Cr18Ni9Ti |
|||
|
5 |
螺母 |
PTFE(F4) |
CF8 |
CF8 |
|||
|
襯膠止回閥主要外形和連接尺寸： |
|
公稱通經(jīng) |
L |
D |
D1 |
D2 |
f |
b |
Z-φd |
D |
D1 |
D2 |
f |
b |
Z-φd |
|
|
DN(mm) |
NPS(inch) |
PN1.0MPa |
PN1.6MPa |
|||||||||||
|
15 |
1/2 |
130 |
95 |
65 |
45 |
2 |
14 |
4-φ14 |
130 |
95 |
65 |
2 |
14 |
4-φ14 |
|
20 |
3/4 |
150 |
105 |
75 |
55 |
2 |
16 |
4-φ14 |
150 |
105 |
75 |
2 |
16 |
4-φ14 |
|
25 |
1 |
160 |
115 |
85 |
65 |
2 |
16 |
4-φ14 |
160 |
115 |
85 |
2 |
16 |
4-φ14 |
|
32 |
5/4 |
180 |
135 |
100 |
78 |
2 |
18 |
4-φ18 |
180 |
135 |
100 |
2 |
18 |
4-φ18 |
|
40 |
3/2 |
200 |
145 |
110 |
85 |
3 |
18 |
4-φ18 |
200 |
145 |
110 |
3 |
18 |
4-φ18 |
|
50 |
2 |
230 |
160 |
125 |
100 |
3 |
20 |
4-φ18 |
230 |
160 |
125 |
3 |
20 |
4-φ18 |
|
65 |
5/2 |
290 |
180 |
145 |
120 |
3 |
20 |
4-φ18 |
290 |
180 |
145 |
3 |
20 |
4-φ18 |
|
80 |
3 |
310 |
195 |
160 |
135 |
3 |
22 |
4-φ18 |
310 |
195 |
160 |
3 |
22 |
4-φ18 |
|
100 |
4 |
350 |
215 |
180 |
155 |
3 |
22 |
8-φ18 |
350 |
215 |
180 |
3 |
24 |
8-φ18 |
|
125 |
5 |
400 |
245 |
210 |
185 |
3 |
24 |
8-φ18 |
400 |
245 |
210 |
3 |
26 |
8-φ18 |
|
150 |
6 |
480 |
280 |
240 |
210 |
3 |
24 |
8-φ23 |
480 |
280 |
240 |
3 |
28 |
8-φ23 |
|
200 |
8 |
600 |
335 |
295 |
265 |
3 |
26 |
8-φ23 |
495 |
335 |
295 |
3 |
30 |
12-φ23 |
|
250 |
10 |
622 |
390 |
350 |
320 |
3 |
28 |
12-φ23 |
622 |
405 |
355 |
3 |
32 |
12-φ25 |
|
300 |
12 |
698 |
440 |
400 |
368 |
4 |
28 |
12-φ23 |
698 |
460 |
410 |
4 |
34 |
12-φ25 |
|
350 |
14 |
787 |
500 |
460 |
428 |
4 |
30 |
16-φ23 |
787 |
520 |
470 |
4 |
38 |
16-φ25 |
|
400 |
16 |
914 |
565 |
515 |
482 |
4 |
32 |
16-φ25 |
914 |
580 |
525 |
4 |
40 |
16-φ30 |
|
450 |
18 |
978 |
615 |
565 |
532 |
4 |
32 |
20-φ25 |
|
|
|
|
|
|
|
500 |
20 |
978 |
670 |
620 |
585 |
4 |
34 |
20-φ25 |
|
|
|
|
|
|
