Characteristics:
Small size, light weight, compact construction, easy to maintenance.
Two torsion springs are used exerting on each of the pair plates,
which close the plates quickly and automaticaly.
The quick-close action prevents the medium from flowing back
and eliminates water hammer effect.
Short body structure length and good riidity. Safe and reliable in
operating,high interference-resistance.
Easy installation,it can be on both horizontal and vertical
directions pipes.
The valve is tightly seated, without leakage under the water
pressure test.
Main Performance Parameter:
|
Nominal Diameter ( mm)
|
Nominal Pressure (Lb)
|
Suitable Medium
|
Suitable Temperature
|
|
50~700
|
150,300
|
water, steam, oil, nitric acid, acerbity and other corrosive medium
|
-196℃~425℃
|
Material of Main Parts:
|
Name
|
Material
|
|
Body
|
Ductile iron, Cast iron, Carbon steel
|
|
Disc
|
Carbon steel, Stainless steel
|
|
Stem
|
Stainless steel, Alloy steel
|
|
Seal Ring
|
NBR, EPDM
|
|
Packing
|
Flexible graphite
|
|
Drivng Type
|
Manual、Worm wheel actuator、Electric、Pneumatic、Hydraulic
|
Dimension Table of Installation:
|
Norminal Diameter (mm)
|
D
|
D1
|
B
|
C
|
R
|
A
|
|
50
|
107
|
65
|
43.3
|
43
|
28.8
|
19
|
|
65
|
127
|
80
|
60.2
|
46
|
36.1
|
20
|
|
80
|
142
|
94
|
66.4
|
64
|
43.4
|
28
|
|
100
|
162
|
117
|
90.8
|
64
|
52.8
|
27
|
|
125
|
192
|
145
|
116.9
|
70
|
65.7
|
30
|
|
150
|
218
|
170
|
144.6
|
76
|
78.6
|
31
|
|
200
|
273
|
224
|
198.2
|
89
|
104.4
|
33
|
|
250
|
328
|
265
|
233.7
|
114
|
127
|
50
|
|
300
|
378
|
310
|
283.9
|
114
|
147
|
43
|
|
350
|
438
|
360
|
332.9
|
127
|
173
|
45
|
|
400
|
489
|
410
|
381
|
140
|
198
|
52
|
|
450
|
539/555
|
450
|
419.9
|
152
|
217.8
|
58
|
|
500
|
594
|
505
|
467.8
|
152
|
241
|
58
|
|
600
|
695
|
624
|
572.6
|
178
|
298
|
73
|
|
700
|
800
|
720
|
680
|
229
|
354
|
98
|
