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Fakai Valve Factory Site: Yongxing Industrial Zone, Longwan District, Wenzhou City Tel: 0577-88767789
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HQ45X double ball micro-resistance ball check valve

HQ45X double ball micro-resistance ball check valve structure diagram
HQ45X double ball micro-resistance ball check valve structure diagram

Structural features

HQ45X double-ball micro-resistance ball check valve uses rubber-covered ball as the valve disc. Their principle is that under the action of the medium, they can roll back and forth on the slide in the valve body to open or close the valve. The valve has a large flow rate, a small flow resistance pressure loss, a good sealing performance, and a muffled closure, which can reduce water shock waves. It can be installed horizontally or vertically. The micro-resistance ball check valve can be used for the outlet of pumps in pipe networks such as cold water, hot water, industrial and domestic sewage, etc. to prevent the medium from flowing backward.

Performance parameter

model Nominal pressure (MPa) Shell test pressure (MPa) Sealing test pressure (MPa) Body material Sphere material
HQ44 / 45-10 1.0 1.5 1.1 cast iron Carbon ladle
HQ44 / 45-16 1.6 2.4 1.76

HQ45X-10 / 16 overall dimensions

Nominal diameter 200 250 300 350 400 450 500 600 700 800 900 1000
L (mm) 550 650 750 850 950 1050 1150 1350 1450 1650 1900 2100
H (mm) 510 570 640 715 815 825 980 1155 1260 1350 1660 1700
Connection size Flange connection size PN1.0MPa according to GB4216.4-84; PN1.6MPa according to GB4216.5-84