Exhaust valve
Name：PQ-16
Details
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
|