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PQ-16
 FLANGE END AND SCREW END AIR VALVE

Scope Of Application:
norminal pressure 1.6MPa
shell pressure 2.4MPa
seat pressure 1.76MPa
suitable medium water
temperature < 100°C

1. PQ-16 conforms to JKR20200-0043-99.
2. Flange drilled conforms to BS EN1092.
3. DN25 is joint by screw thread.

size D
 
D1
 
D2
 
B
 
f
 
n-d
40
 
150
 
110
 
84
 
19 3 4-19
50
 
165
 
125
 
99
 
19 3 4-19
65
 
185
 
145
 
118
 
19
 
3
 
4-19
80
 
200
 
160
 
132
 
19 3 8-19
100
 
220
 
180
 
156
 
19 3 8-19
125
 
250
 
210
 
184
 
19 3 8-19
150
 
285
 
240
 
211
 
19 3 8-23
200
 
340
 
295
 
266
 
20 3 12-23
250 405 355 319 22 3 12-28

18 washer steel BS970 43A GB700-88 Q235
17 nut steel BS970 43A GB700-88 Q235
16 small orifice cover ductile iron BS2789 Gr500-7 GB1348 QT500-7
15 screw plug brass BS1400 PCB1 GB1176-87 ZCuZn40Pb2
14 sealed orifice EPDM BS2494 Type W  
13 bolt steel BS970 43A GB700-88 Q235
12 gasket EPDM BS2494 Type W  
11 ball seal large orifice EPDM BS2494 Type W  
10 screw plug brass BS1400 PCB1 GB1176-87 ZCuZn40Pb2
9 float ball plastic ABS ISO 2580 ISO 2580
8 washer steel BS970 43A GB700-88 Q235
7 nut steel BS970 43A GB700-88 Q235
6 dust cap ductile iron BS2789 Gr500-7 GB1348 QT500-7
5 large orifice cover ductile iron BS2789 Gr500-7 GB1348 QT500-7
4 ball seal large orifice EPDM BS2494 Type W  
3 bolt steel BS970 43A GB700-88 Q235
2 float ball plastic ABS ISO 2580 ISO 2580
1 body ductile iron BS2789 Gr500-7 GB1438 QT500-7
NO. Name of part Material British standard Chinese standard

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