HQ11\45X micro-rseistance ball type check valve

product introduction Micro-resistance ball type check valve's disc is a ball coated with rubber and dependant on the line pressure the ball can roll in the chute in the body to open or close the valve without any noise and water-hammering and with good sealing capability.The flow rate is much with little resisting force and little pressure loss.It can be installed vertically or horizontally and widely used at the outlet of pump in cold water's,hot water's,industry's and sewage's pipeline system. main technical parameters Nominal pressure: 1.0-1.6 Nominal diameter: 50-1000mm service:water and weak corrosive fluid Working temperature:0-80 Flanged end: GB/T17241.6 GB9113 Inspection and test: GB/T 13927 API 598 Typical installation diagram   Material part body disc spring seat Material Cast iron ductile cast iron,cast steel Cast copper,stainless steel Stainless steel Copper,steel main dimensionsunit:mm DN 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900 1000 L 203 216 241 292 330 356 495 622 698 781 914 978 978 1295 1448 1600 1760 1900 H 180 210 225 245 280 320 380 450 470 500                 H1             510 570 640 715 815 825 980 1155 1260 1350 1660 1700