鍛鋼焊接止回�有三種閥蓋設(shè)�(jì)形式.第一種是螺栓式閥�,按這種�(shè)�(jì)形式�(shè)�(jì)的閥門,其閥體與閥蓋用螺栓螺母連接,纏繞式墊�(316夾柔性石墨制�)密封.客戶有特殊要求時(shí)也可采用金屬�(huán)連接.第二種設(shè)�(jì)形式是焊接式閥蓋,按這種�(shè)�(jì)形式的閥門,其閥體與閥蓋用螺紋連接,全焊密封.客戶有特殊要求時(shí)也可采用透焊連接.第三種是壓力自緊式閥�,按這種�(shè)�(jì)形式�(shè)�(jì)的閥門,其閥體與閥蓋用螺紋連接,�(nèi)壓自密環(huán)密封.
鍛鋼升降止回�800LB
鍛鋼焊接止回�尺寸(MM)和重�(KG)
NPS
|
縮徑
|
3/8”
|
1/2”
|
3/4”
|
1”
|
11/4”
|
11/2”
|
2”
|
|
全徑
|
|
3/8”
|
1/2”
|
3/4”
|
1”
|
11/4”
|
11/2”
|
2”
|
L
|
79
|
79
|
92
|
111
|
120
|
152
|
172
|
200
|
W
|
61
|
61
|
65
|
79
|
95
|
103
|
118
|
132
|
重量
|
螺栓�
|
1.4
|
1.2
|
1.5
|
3.1
|
3.9
|
5.6
|
8.9
|
12.5
|
焊接�
|
1.1
|
1.0
|
1.2
|
2.9
|
3.3
|
4.9
|
8.1
|
10.9
|
鍛鋼升降止回�900LB�1500LB
尺寸(MM)和重�(KG)
NPS
|
縮徑
|
3/8”
|
1/2”
|
3/4”
|
1”
|
11/4”
|
11/2”
|
2”
|
|
全徑
|
|
3/8”
|
1/2”
|
3/4”
|
1”
|
11/4”
|
11/2”
|
2”
|
L
|
92
|
111
|
111
|
120
|
152
|
172
|
200
|
220
|
W
|
65
|
79
|
79
|
97
|
104
|
120
|
139
|
215
|
重量
|
螺栓�
|
1.6
|
3.4
|
3.3
|
5.5
|
6.0
|
9.2
|
12.9
|
16.2
|
焊接�
|
1.3
|
3.2
|
3.1
|
4.8
|
5.4
|
8.5
|
11.2
|
14.3
|
鍛鋼旋啟式止回閥800LB�900LB�1500LB
尺寸(MM)和重�(KG)
NPS
|
3/8”
|
1/2”
|
3/4”
|
1”
|
11/4"
|
11/2"
|
2"
|
L
|
800LB
|
79
|
79
|
92
|
111
|
120
|
120
|
140
|
900LB�1500LB
|
92
|
111
|
111
|
120
|
120
|
140
|
178
|
W
|
800LB
|
61
|
61
|
78
|
84
|
101
|
120
|
133
|
900LB�1500LB
|
79
|
79
|
79
|
97
|
105
|
120
|
140
|
重量
|
800LB
|
1.1
|
1.0
|
1.9
|
3.9
|
4.5
|
7.3
|
10.0
|
900LB�1500LB
|
3.1
|
3.0
|
3.6
|
4.3
|
6.1
|
8.8
|
12.6
|
自密封升降止回閥900LB�2500LB
尺寸(MM)和重�(KG)
NPS
|
1/2"
|
3/4"
|
1"
|
1/4"
|
11/2"
|
2"
|
L
|
900LB�1500LB
|
140
|
140
|
140
|
178
|
178
|
216
|
2500LB
|
186
|
186
|
186
|
232
|
232
|
279
|
H
|
117
|
117
|
117
|
152
|
152
|
195
|
重量
|
900LB�1500LB
|
7.5
|
7.0
|
6.8
|
18.5
|
18.1
|
20.3
|
2500LB
|
9.0
|
7.6
|
8.4
|
19.5
|
20.1
|
21.8
|
|