butterfly buffer check valve
technical parameter
product model: hh47, h47xf, hdh47x
nominal pressure: 1.0~2.5mpa
nominal diameter: 200~1400mm
applicable medium: water, oil, sea water, sewage
applicable temperature: 0~80℃ (up to 200℃ if necessary)
flange standard: gb/t 17241.6 gb/t 9113
test standard: gb/t 13927 api 598
product description
butterfly buffer check valve is mainly used at the pump outlet of industrial water supply and sewage treatment plant to prevent the backflow of the medium in the pipe network. destructive water hammer is automatically eliminated so that pumps and piping are not damaged. the valve is mainly composed of valve body, valve disc, buffer device and micro-control valve. the product has the characteristics of novel structure, small volume, small fluid resistance, balanced operation, reliable sealing, wear resistance, and good buffer performance. it is an ideal product for industrial water and urban sewage.
material of main parts
part name | body | disc | stem, cylinder, piston | spring | seat |
material | grey cast iron, cast steel | carbon steel | stainless steel | stainless steel | nitrile rubber |
main external connection dimensions
dn | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 | 900 | 1000 | 1200 | 1400 |
l | 230 | 250 | 270 | 290 | 310 | 330 | 350 | 390 | 430 | 470 | 510 | 550 | 630 | 710 |
h | 550 | 250 | 690 | 780 | 860 | 910 | 980 | 1070 | 1220 | 1320 | 1430 | 1550 | 1800 | 1980 |
b1 | 540 | 630 | 650 | 710 | 770 | 830 | 900 | 1090 | 1200 | 1320 | 1420 | 1550 | 1780 | 2000 |