Product Name:Butterfly Swing Check Valve
Category:Check Valves
Item No.: 
Spec: 
Packing: 
  •  Description
Standards compliance
Design and Manufacture: ASNI B16.34,API 6D
Face to face: API6D
Flanged connection: 2"-24" ANSI B16.5 22",26"-36"
MSS-SP-44 API 605 on request
Test and inspection: API6D
Shell test: 150Lb 450 PSI 300Lb 1125 PSI
Seat test: 150Lb 315 PSI(Hydrostatic) 80PSI
(Air)300Lb 815 PSI

 

Product introduction
The wafer flange clamped butterfly check valve is a energy-save produt. It is manufactured based the foreign advancec 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.

 

 

Features
Small in size,light in weight,compact in structure,easy in maintenance.
Two torsion springs are used exerting on each of the pair valve plates.Which close the plates quickly and automatically.
The quick-close action prevents the medium from flowing back and eliminates water-hammer effect.
This valve is short in length,so that it is laid horizontally or vertically.
It is easy to install on pipeline which is laid horizontally or vertically.
This valve is tightly sealed without leakage under the pressure water test.
Safe and reliable in operation,high interference-resistance.
The connection dimensions of flanges accord with the standards of GB4216-84 GB4216.5-84
The face to face dimensions are in accordance with GB12221-89.ISO 5752-82. The stem of the valve should be perpendicular to the horizontal level when the valve is mounted on horizontal pipeline.For vertical installation the direction of flow should be downward.

 

 

CLASS 150~CLASS 300 Butterfly swing check valve
Materials for main parts
Part WCB A352LCB A217 WC 6 A217 WC9 A217 C 5 A217 C 12 A351 CF 8 A351 CF 8M
Body A216 WCB A352LCB A217 WC 6 A217 WC 9 A217 C 5 A217 C 12 A351 CF 8 A351 CF 8M
Disc A351 CF 8 A351 CF 8 A182 F 11 A182 F 22 A217 C 5 A217 C 12 A182 F 304 A182 F 316
Stem A182 F 304 A182 F 304 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
Moverall & structure dimension & weight
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" 127 800 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

 

Stainless steel on the folder-type check valve (H74W)30 4

 

Performance parameters
Type PN(MPa) Pressure test Ps(MPa) Appropriate temperature(ºC) Apprropriate medium
Shell Seal Hard Seal
H74 1.0 1.50 1.10 ≤400 Oil,water,acid
Alkali
H74 1.6 2.40 1.76
H74 2.5 3.75 2.75
H74 4.0 6.00 4.40
Main size
DN(mm) L D
D I II PN1.0 PN1.6 PN2.5 PN4.0
50 27 15 22 107 107 109 109
65 39 15 22 127 127 129 129
80 48 15 22 142 142 144 144
100 72 15 24 162 168 170 170
125 95 16 26 190 192 186 186
150 115 19 29 218 220 226 226
200 140 29 43 272 272 286 293
250 190 29 43 327 330 343 355
300 218 38 50 378 384 403 420
Main size and weight
Dn(mm) 1.0 1.6 2.5 4.0 6.3(6.4) 10.0 16.0
(mm) (kg) (mm) (kg) (mm) (kg) (mm) (kg) (mm) (kg) (mm) (kg) (mm) (kg)
L D L D L D L D L D L D L D1 D2
50 60 109 2 60 109 2 60 109 2 60 109 3.5 60 115 3.5 60 122 4 70 143 122 6.5
65 67 129 3 67 129 3 67 129 3 67 129 5 67 140 5 67 147 6 83 163 147 9
80 73 144 4 73 144 4 73 144 4 73 144 7 76 150 7 73 157 8 83 178 157 14
100 73 164 6 73 164 6 73 170 6 73 170 9 79 177 11 79 183 12 102 210 183 24
125 86 194 7.5 86 194 7.5 86 197 9 86 197 16 105 213 20 105 220 21 110 249 220 30
200 127 275 20 127 275 20 127 287 22 127 293 30 165 313 41 165 324 46 206 358 324 55
250 146 330 30 146 332 32 146 343 38 146 355 80 213 364 70 213 394 76        
300 181 380 48 181 387 50 181 403 54 184 450 86 229 424 100 229 458 110        

 

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