雙聯(lián)彈簧式安全閥適用于工作溫度≤350℃的蒸汽、水等介質(zhì)的設(shè)備和管路上。作為超壓保護裝置。
A38Y、A43H、A37H型雙聯(lián)彈簧式安全閥除三通(材料為WCB)外,其余零件的材料均和A47H、A48Y型彈簧式安全閥相同。
A38Y、A43H、A37H型雙聯(lián)安全閥是在Y型接頭上裝設(shè)兩個同樣規(guī)格的A48Y或A47H型安全閥而構(gòu)成,其公稱通徑系列指Y型接頭進口通徑,其組合情況如下表:
A38Y雙聯(lián)型  | 
相應(yīng)的A48Y型  | 
50  | 
32×2  | 
80  | 
50×2  | 
100  | 
65×2  | 
150  | 
100×2  | 
?
A43Y雙聯(lián)型  | 
相應(yīng)的A47Y型  | 
50  | 
32×2  | 
80  | 
50×2  | 
100  | 
80×2  | 
125  | 
100×2  | 
150  | 
125×2  | 
?
A37Y雙聯(lián)型  | 
相應(yīng)的A47Y型  | 
50  | 
32×2  | 
80  | 
65×2  | 
100  | 
80×2  | 
125  | 
100×2  | 
150  | 
125×2  | 
主要外形尺寸
型號  | 
公稱通徑  | 
do  | 
D  | 
K  | 
g  | 
g1  | 
b  | 
f  | 
f1  | 
Z-?d  | 
DN'  | 
D1  | 
K1  | 
g2  | 
b1  | 
f'  | 
Z1-?d1  | 
L  | 
L1  | 
L0  | 
h  | 
H  | 
A37H-16C A43H-16C  | 
50  | 
25  | 
165  | 
125  | 
100  | 
20  | 
3  | 
4-18  | 
32  | 
140  | 
100  | 
78  | 
18  | 
2  | 
4-18  | 
115  | 
110  | 
165  | 
235  | 
547  | 
||
80  | 
40  | 
200  | 
160  | 
135  | 
20  | 
3  | 
8-18  | 
50  | 
165  | 
125  | 
100  | 
16  | 
3  | 
4-18  | 
135  | 
120  | 
190  | 
285  | 
795  | 
|||
80  | 
50  | 
200  | 
160  | 
135  | 
20  | 
3  | 
8-18  | 
65  | 
185  | 
145  | 
120  | 
18  | 
3  | 
4-18  | 
140  | 
130  | 
205  | 
310  | 
835  | 
|||
100  | 
65  | 
220  | 
180  | 
155  | 
22  | 
3  | 
8-18  | 
80  | 
200  | 
160  | 
135  | 
20  | 
3  | 
8-18  | 
160  | 
135  | 
255  | 
355  | 
890  | 
|||
125  | 
80  | 
250  | 
210  | 
185  | 
22  | 
3  | 
8-18  | 
100  | 
220  | 
180  | 
155  | 
22  | 
3  | 
8-18  | 
170  | 
160  | 
260  | 
410  | 
1170  | 
|||
150  | 
100  | 
285  | 
240  | 
210  | 
24  | 
3  | 
8-23  | 
125  | 
250  | 
210  | 
185  | 
22  | 
3  | 
8-18  | 
190  | 
190  | 
275  | 
430  | 
1240  | 
|||
A37H-25 A43H-25  | 
50  | 
25  | 
165  | 
125  | 
100  | 
20  | 
3  | 
4-18  | 
32  | 
140  | 
100  | 
78  | 
18  | 
2  | 
4-18  | 
115  | 
110  | 
165  | 
235  | 
547  | 
||
80  | 
40  | 
200  | 
160  | 
135  | 
22  | 
3  | 
8-18  | 
50  | 
165  | 
125  | 
100  | 
16  | 
3  | 
4-18  | 
135  | 
120  | 
190  | 
285  | 
795  | 
|||
80  | 
50  | 
200  | 
160  | 
135  | 
22  | 
3  | 
8-18  | 
65  | 
185  | 
145  | 
120  | 
18  | 
3  | 
4-18  | 
140  | 
130  | 
205  | 
310  | 
835  | 
|||
100  | 
65  | 
230  | 
190  | 
160  | 
24  | 
3  | 
8-23  | 
80  | 
200  | 
160  | 
135  | 
20  | 
3  | 
8-18  | 
160  | 
135  | 
255  | 
355  | 
890  | 
|||
125  | 
80  | 
270  | 
220  | 
188  | 
28  | 
3  | 
8-26  | 
100  | 
220  | 
180  | 
155  | 
22  | 
3  | 
8-18  | 
170  | 
160  | 
260  | 
410  | 
1170  | 
|||
150  | 
100  | 
300  | 
250  | 
218  | 
30  | 
3  | 
8-26  | 
125  | 
250  | 
210  | 
185  | 
22  | 
3  | 
8-18  | 
190  | 
190  | 
275  | 
430  | 
1240  | 
|||
A37H-40 A43H-40  | 
50  | 
25  | 
165  | 
125  | 
100  | 
88  | 
20  | 
3  | 
4  | 
4-18  | 
32  | 
140  | 
100  | 
78  | 
16  | 
2  | 
4-18  | 
115  | 
110  | 
165  | 
235  | 
547  | 
80  | 
40  | 
200  | 
160  | 
135  | 
121  | 
22  | 
3  | 
4  | 
8-18  | 
50  | 
165  | 
125  | 
100  | 
16  | 
3  | 
4-18  | 
135  | 
120  | 
190  | 
285  | 
795  | 
|
80  | 
50  | 
200  | 
160  | 
135  | 
121  | 
22  | 
3  | 
4  | 
8-18  | 
65  | 
185  | 
145  | 
120  | 
18  | 
3  | 
4-18  | 
140  | 
130  | 
205  | 
310  | 
835  | 
|
100  | 
65  | 
235  | 
190  | 
160  | 
150  | 
24  | 
3  | 
4.5  | 
8-23  | 
80  | 
200  | 
160  | 
135  | 
20  | 
3  | 
8-18  | 
160  | 
135  | 
255  | 
355  | 
890  | 
|
125  | 
80  | 
270  | 
220  | 
188  | 
176  | 
28  | 
3  | 
4.5  | 
8-26  | 
100  | 
220  | 
180  | 
155  | 
22  | 
3  | 
8-18  | 
170  | 
160  | 
260  | 
410  | 
1170  | 
|
150  | 
100  | 
300  | 
250  | 
218  | 
204  | 
30  | 
3  | 
4.5  | 
8-26  | 
125  | 
250  | 
210  | 
185  | 
22  | 
3  | 
8-18  | 
190  | 
190  | 
275  | 
430  | 
1240  | 
|
A38Y-16C  | 
50  | 
20  | 
165  | 
125  | 
100  | 
20  | 
3  | 
4-18  | 
40  | 
150  | 
110  | 
85  | 
16  | 
3  | 
4-18  | 
198  | 
100  | 
165  | 
225  | 
636  | 
||
80  | 
32  | 
200  | 
160  | 
135  | 
20  | 
3  | 
8-18  | 
65  | 
185  | 
145  | 
120  | 
20  | 
3  | 
4-18  | 
230  | 
120  | 
190  | 
265  | 
817  | 
|||
100  | 
40  | 
220  | 
180  | 
155  | 
22  | 
3  | 
8-18  | 
80  | 
200  | 
160  | 
135  | 
20  | 
3  | 
8-18  | 
293  | 
140  | 
265  | 
265  | 
921  | 
|||
150  | 
80  | 
285  | 
240  | 
210  | 
24  | 
3  | 
8-23  | 
125  | 
250  | 
210  | 
185  | 
22  | 
3  | 
8-18  | 
320  | 
175  | 
250  | 
420  | 
1097  | 
|||
A38Y-25  | 
50  | 
20  | 
165  | 
125  | 
100  | 
20  | 
3  | 
4-18  | 
40  | 
150  | 
110  | 
85  | 
16  | 
3  | 
4-18  | 
198  | 
100  | 
165  | 
225  | 
636  | 
||
80  | 
32  | 
200  | 
160  | 
135  | 
22  | 
3  | 
8-18  | 
65  | 
185  | 
145  | 
120  | 
20  | 
3  | 
4-18  | 
230  | 
120  | 
190  | 
265  | 
817  | 
|||
100  | 
40  | 
230  | 
190  | 
160  | 
24  | 
3  | 
8-23  | 
80  | 
200  | 
160  | 
135  | 
20  | 
3  | 
8-18  | 
293  | 
140  | 
265  | 
265  | 
921  | 
|||
150  | 
80  | 
300  | 
250  | 
218  | 
30  | 
3  | 
8-26  | 
125  | 
250  | 
210  | 
185  | 
22  | 
3  | 
8-18  | 
320  | 
175  | 
250  | 
420  | 
1097  | 
|||
A38Y-40  | 
50  | 
20  | 
165  | 
125  | 
100  | 
88  | 
20  | 
3  | 
4  | 
4-18  | 
40  | 
150  | 
110  | 
85  | 
16  | 
3  | 
4-18  | 
198  | 
100  | 
165  | 
225  | 
636  | 
80  | 
32  | 
200  | 
160  | 
135  | 
121  | 
22  | 
3  | 
4  | 
8-18  | 
65  | 
185  | 
145  | 
120  | 
20  | 
3  | 
4-18  | 
230  | 
120  | 
190  | 
265  | 
817  | 
|
100  | 
40  | 
235  | 
190  | 
160  | 
150  | 
24  | 
3  | 
4.5  | 
8-23  | 
80  | 
200  | 
160  | 
135  | 
20  | 
3  | 
8-18  | 
293  | 
140  | 
265  | 
265  | 
921  | 
|
150  | 
80  | 
300  | 
250  | 
218  | 
204  | 
30  | 
3  | 
4.5  | 
8-26  | 
125  | 
250  | 
210  | 
185  | 
22  | 
3  | 
8-18  | 
320  | 
175  | 
250  | 
420  | 
1097  |