锻钢闸阀有三种阀盖设计,**种是螺栓型阀盖,通过凹凸面连接,采用不锈钢带与柔性石墨缠绕垫片,按需求也可采用环连接,第二种是焊接型阀盖,通过螺纹密封后焊接,按需求也可直接采用刚性焊接,第三种是自密封阀盖,通过螺纹与自密封阀盖连接。
锻钢闸阀制造按API 602,BS5352,ANSI B16.34.
试验与验收按API 598,标识按照MSS SP-25.
结构型式:
1.全通径或缩径;
2.明杆带支架;
3.两端自动调心的填料压套;
4.用缠绕式垫片的螺栓型阀盖、螺纹密封焊接型阀盖,或自密封阀盖
5.本体倒密封;
6.承插焊接ANSI/ASME B16.11;
7.螺纹端(NPT端)按ANSI/ASME B1.20.1。
通径 |
缩径RB |
3/8 |
1/2 |
3/4 |
1 |
1 1/4 |
1 1/2 |
2 |
|
|
NPS |
全径FB |
|
3/8 |
1/2 |
3/4 |
1 |
1 1/4 |
1 1/2 |
2 |
|
L |
150~800Lb |
79 |
79 |
92 |
111 |
120 |
120 |
140 |
178 |
|
900Lb |
79 |
92 |
111 |
120 |
120 |
140 |
178 |
210 |
||
1500Lb |
111 |
111 |
111 |
114 |
120 |
140 |
162 |
210 |
||
H(OPEN) |
150~800Lb |
158 |
158 |
169 |
197 |
236 |
246 |
283 |
330 |
|
900~1500Lb |
169 |
197 |
197 |
236 |
246 |
283 |
330 |
354 |
||
W |
150~800Lb |
100 |
100 |
100 |
125 |
160 |
160 |
180 |
200 |
|
900~1500Lb |
100 |
125 |
125 |
160 |
160 |
180 |
200 |
240 |
||
Weights |
Bolted |
150~800Lb |
2.1 |
2.0 |
2.3 |
4.3 |
5.9 |
6.9 |
11.1 |
15.2 |
900~1500Lb |
2.5 |
4.3 |
4.2 |
6.6 |
8.8 |
12.5 |
17.2 |
23.5 |
||
Welded |
150~800Lb |
1.8 |
1.7 |
2.0 |
3.8 |
5.1 |
6.1 |
10.2 |
14.2 |
|
900~1500Lb |
2.4 |
4.2 |
4.0 |
6.3 |
8.7 |
12.1 |
17.2 |
22 |
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