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Homepage>>>Products>>>Check valve>>>Class 150~300 Butterfly Swing Check Valve

Presure-seal Globe Valve 900Lb~2500Lb

CLASS 150~300 BUTTERFLY SWING CHECK VALVE

Product introduction
The wafer flange clamped butterfly check valve is a energy-save product.It is manufactured based the foreign advanced technology and in accordance with relative international standards.This product is featured by excellent retaining per-formance,high safety and reliability and low flow resistance.It is suitable for systems in the industries of petrochemical food processing,medicine,textile,paper-making.Water,supply,drainage,metallurgy,energy,and light industry,etc,used as a check valve in one way.

Standerds compliance
Design and Manufacture: ANSI B16.34,API 6D
Face to face: API 6D
Flanged connection: 2~~24~to ANSI B16.5
22~,26~~36~to MSS-SP-44 to API 605 on request
Test and inspection: API 6D
Shell test 150Lb 450 PSI
300Lb 1125 PSI
Seat test 150Lb 315 PSI
300Lb 815 PSI(Hydrostatic)80PSI(Air)

Featutes
1.Small in size,light in weight,compact in structure,easy in maintenance.
2.Two torsion springs are used excerting on each of the pair valve plates.Which close the plates quickly and automatically.
3.The quick-close action prevents the medium from flowing back and eliminates water-hammer effect.
4.This valve is short in length,so that it is rigid and easy to mount.
5.It is easy to install on pipeline which is laid horizontally or vertically.
6.This valve is tightly sealed without leakage under the pressure water test.
7.Safe and reliable in operation,high interference-resistance.
8.The connection dimensions of flanges accord with the standards of GB4216-84 GB4216.84
9.The face to face dimensions are in accordance with GB12221-89.ISO5752-82.The stem of the valve should be perpendicular to the horizontal level when the valve is mounted on horizontal pipeling.For vertical installation the direction of flow should be downward.

Materials for main parts

Patr
WCB
A352 LCB
A217 WC6
A217 WC9
A217 C5
A217 C12
A351 CF8
A351 CF8M
Body
A216 WCB
A352 LCB
A217 WC6
A217 WC9
A217 C5
A217 C12
A351 CF8
A351 CF8M
Disc
A351 CF8
A351 CF8
A182 F11
A182 F22
A217 C5
A217 C12
A182 F304
A182 F316
Sten
A182 F304
A182 F304
A182 F304
A182 F304
A182 F304
A182 F304
A182 F304
A182 F316
Spring
Stainless steel
Rubber Gasket

EPDM-46~+121

Neoprene-50~+150

NBR-35~+113

Fluororabber-23~+150


Size
D
D1
D2
L
R
t
Weight(Kg)
mm
inch
50
2~
107
65
43.3
43
28.8
19
1.5
65
2.5~
127
80
60.2
46
36.1
20
2.4
80
3~
142
94
66.4
64
43.4
28
3.6
100
4~
162
117
90.8
64
52.8
27
5.7
125
5~
192
145
116.9
70
65.7
30
7.3
150
6~
213
170
144.6
76
78.6
31
9.0
200
8~
273
224
198.2
89
104.4
33
17
250
10~
323
265
233.7
114
127
50
26
300
12~
378
310
283.9
114
148.3

43

42
350
14~
438
360
332.9
127
172.4
46
55
400
16~
439
410
381.0
140
197.4
52
75
450
18~
555
450
419.9
152
217.8
58
101~ 107
500
20~
594
505
467.8
152
241
58
111
600
24~
690
624
572.6
178
295.4
73
172
700
28~
800
720
680
29
354
98
219

 

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