Description
G641J Reciprocating pneumatic diaphragm valve
G641J reciprocating pneumatic diaphragm valve is specially designed to control non-corrosive or general corrosive media. There is no lining on the inner surface of the valve body or covered with a variety of optional rubber. The reciprocating pneumatic diaphragm valve is suitable for different working temperatures and fluid pipelines. Applicable Temperature of Reciprocating Pneumatic Diaphragm Valve:<85, <100, <120, <150 (according to lining and diaphragm material)
Pressure level: PN0.6, 1, 1.6
Material Science
Body: cast iron, ductile iron, carbon steel, stainless steel.
Bonnet: cast iron, ductile iron, carbon steel, stainless steel.
Lining: no lining, rubber.
Diaphragm: Rubber
Disc: cast iron and carbon steel.
Cylinder: ductile iron
Piston: carbon steel
Stem: carbon steel
Hand wheel: Cast Iron
Lining layer: EDM test
Test and inspection according to GB/T13297 standard
Nominal pressure: PN (Mpa)
Valve body: PN * 1.5
Sealing: PN x 1.1
Parts List: 1, Body 2, Body Lining 3, Diaphragm 4, Disc 5, Lower Stem 6, Cover 7, Cylinder 8, Piston 9, Cylinder Head 10, Upper Stem 11, Handwheel
Main dimensions and weight
|
DN
mm |
PN
MPa |
WP
MPa |
L
（mm） |
D
（mm） |
D1
（mm） |
n-φd
（mm） |
F
（mm） |
H1
（mm） |
H2
（mm） |
D0
（mm） |
B
|
Air Pressure
MPa |
Air couple
in |
Air capacity
cm3 |
Weight Kg |
|
15
|
0.6
|
0.6
|
125
|
95
|
65
|
4-14
|
2
|
|
|
|
|
|
|
|
|
|
20
|
139
|
105
|
75
|
4-14
|
2
|
|
|
|
|
|
|
|
|
||
|
25
|
145
|
115
|
85
|
4-14
|
2
|
250
|
264
|
120
|
94
|
0.4
|
10×1
|
2.395×102
|
6．5
|
||
|
32
|
160
|
140
|
100
|
4-18
|
2
|
3025
|
328
|
140
|
120
|
0.4
|
12×1.25
|
6.082×102
|
|
||
|
40
|
180
|
150
|
110
|
4-18
|
3
|
306
|
328
|
140
|
120
|
0.4
|
12×1.25
|
6.082×102
|
|
||
|
50
|
210
|
165
|
125
|
4-18
|
3
|
379
|
405
|
160
|
185
|
0.4
|
12×1.25
|
1.235×102
|
25
|
||
|
65
|
250
|
185
|
145
|
4-18
|
3
|
467
|
502
|
240
|
245
|
0.5
|
16×1.5
|
3.725×103
|
31．5
|
||
|
80
|
300
|
200
|
160
|
4-18
|
3
|
483
|
523
|
240
|
245
|
0.5
|
16×1.5
|
3.725×103
|
62．5
|
||
|
100
|
350
|
220
|
180
|
8-18
|
3
|
565
|
617
|
280
|
330
|
0.5
|
20×1.5
|
9.458×103
|
93．5
|
||
|
125
|
400
|
250
|
210
|
8-18
|
3
|
664
|
732
|
320
|
380
|
0.5
|
20×1.5
|
1.409×104
|
114
|
||
|
150
|
460
|
285
|
240
|
8-22
|
3
|
750
|
830
|
320
|
470
|
0.5
|
20×1.5
|
2.868×104
|
164
|
||
|
200
|
0.4
|
570
|
340
|
295
|
8-22
|
4
|
930
|
1050
|
400
|
470
|
0.5
|
20×1.5
|
4.619×104
|
249
|
|
|
250
|
680
|
395
|
350
|
12-22
|
4
|
|
|
|
|
|
|
|
|
