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Class 150~300 butterfly swing check valve

class 150~300 butterfly swing check valve
Features
1. Small in size, light in weight, compact in structure, easy in maintenance.
2. Two torsion springs are used excreting 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 pipeline. For vertical installation the direction of flow should be downward.

Product Details
Design and Manufacture ANSI B16.34,API6D
Face to face(end to end) API6D
Flanged connection 2"~24"to ANSIB16.5,22",26"~36"to MSS-SP-44 to API605 on Request
Test and inspection API6D Shell test 150Lb 450 PSI 300Lb 1125 PSI Seat test 150Lb 315 PSI 300Lb 815 PSI(Hydrostatic)80PSI(Air)


Materials for main parts

Part 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
Stem 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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established in 1997.the main products are forged steel and cast stell ball valve,gate valve,check valve and so on