H44 American Standard swing check valve refers to the valve that automatically opens and closes the valve disc depending on the flow of the medium itself to prevent the backflow of the medium, also known as check valve, one-way valve, backflow valve and back pressure valve. The function of this type of valve is to allow the medium to flow in only one direction and prevent the flow in one direction. Usually, this valve works automatically. Under the action of fluid pressure flowing in one direction, the valve disc opens; When the fluid flows in the opposite direction, the fluid pressure and the self weight of the valve disc act on the valve seat, so as to cut off the flow.
H44 American Standard swing check valve is applicable to pipelines under various working conditions such as petroleum, chemical, hydraulic and thermal power plants to cut off or connect media. Applicable media: water, oil, steam, etc
Design and manufacture | MSS SP-71 |
Face to face | ANSI B 16.10 |
Flange end | ANSI B16.1 |
Norminal pressure | 125 PSI |
Suitbk temperature | -20to 200°C |
Seal test | 200 PSI |
Shell test | 350 PSI |
NPS | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 |
DN | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
L | 203 | 216 | 240 | 292 | 330 | 355 | 495 | 622 | 698.5 |
H | 114 | 137 | 149 | 168 | 197 | 210 | 260 | 305 | 349 |
D | 152 | 178 | 190 | 229 | 254 | 279 | 343 | 406 | 483 |
DI | 120.7 | 139.5 | 152.5 | 190.5 | 216 | 241.5 | 298.5 | 362 | 432 |