鍛鋼止回閥
鍛鋼止回閥有三種閥蓋設(shè)計(jì),第一種是螺栓型閥蓋,通過凹凸面連接,采用不銹鋼帶與柔性石墨纏繞墊片,按需求也可采用環(huán)連接,第二種是焊接型閥蓋,通過螺紋密封后焊接,按需求也可直接采用剛性焊接,第三種是自密封閥蓋,通過螺紋與自密封閥蓋連接。
止回閥還有三種不同的結(jié)構(gòu)設(shè)計(jì),分別是:立升式止回閥、球形止回閥和旋啟式止回閥。連接方式有法蘭,對(duì)焊等!
止回閥的結(jié)構(gòu)設(shè)計(jì)和規(guī)范:
止回閥制造按MSS SP-118,BS5352,ANSI/ASME B16.34,試驗(yàn)與驗(yàn)收按API 598,標(biāo)識(shí)按照MSS SP-25.
結(jié)構(gòu)型式如下:
1.全通徑或縮徑;
2.立升式止回閥
3.球形止回閥
4.旋啟式止回閥
5.可按要求采用彈簧輔助復(fù)位
6.采用纏繞式墊片的螺栓型閥蓋、螺紋密封焊接型閥蓋,或自密封閥蓋
7.承插焊接ANSI/ASME B16.11
8.螺紋端(NPT端)按ANSI/ASME B1.20.1
材料表:
序號(hào)NO. |
名 稱 |
美標(biāo)碳鋼CS to ASTM |
美標(biāo)合金鋼AS to ASTM |
美標(biāo)不銹鋼鋼SS to ASTM |
||
Part Name |
Type A 105 |
Type F22 |
Type F304(L) |
Type F316(L) |
||
1 |
閥體 |
Body |
A105 |
A182 F22 |
A182 F304(L) |
A182 F316(L) |
2 |
立升式閥瓣 |
Piston Disc |
A276 410 |
A276 304 |
A276 F304(L) |
A276 F316(L) |
3 |
墊片 |
Gasket |
Corrugated SS+graphite |
SS+PTFE |
||
4 |
閥蓋 |
Bonnet |
A105 |
A182 F22 |
A182 F304(L) |
A182 F316(L) |
5 |
銘牌 |
Nameplate |
||||
6 |
螺栓 |
Bolt |
A193 B7 |
A193 B16 |
A193 B8M |
A193 B8M |
7 |
球 |
Ball |
A182 F304 |
A182 F304 |
A182 F304 |
A182 F304 |
適用介質(zhì) Suitable Medium |
(水、油、氣等)W.O.G.etc |
(酸類)HNO3,CH3OOH etc |
||||
適用溫度Suitable Temperature |
-29℃~425℃ |
-29℃~550℃ |
-29℃~180℃ |
通徑
|
縮徑RB |
3/8 |
1/2 |
3/4 |
1 |
1 1/4 |
1 1/2 |
2 |
||
NPS
|
全徑FB |
3/8 |
1/2 |
3/4 |
1 |
1 1/4 |
1 1/2 |
2 |
||
L
|
150~800Lb |
79 |
79 |
92 |
111 |
120 |
152 |
172 |
200 |
|
900~1500Lb |
111 |
111 |
111 |
130 |
152 |
172 |
220 |
220 |
||
H(OPEN)
|
150~800Lb |
61 |
61 |
65 |
79 |
95 |
103 |
118 |
132 |
|
900~1500Lb |
65 |
79 |
79 |
97 |
104 |
120 |
139 |
215 |
||
Weights |
Bolted |
150~800Lb |
1.4 |
1.2 |
1.5 |
3.1 |
3.9 |
5.6 |
8.9 |
12.5 |
900~1500Lb |
1.6 |
3.4 |
3.3 |
5.5 |
6.0 |
9.2 |
12.9 |
16.2 |
||
Welded |
150~800Lb |
1.1 |
1.0 |
1.2 |
2.9 |
3.3 |
4.9 |
8.1 |
10.9 |
|
900~1500Lb |
1.3 |
3.2 |
3.1 |
4.8 |
5.4 |
8.5 |
11.2 |
14.3 |
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