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Fakai Valve Factory Site: Yongxing Industrial Zone, Longwan District, Wenzhou City
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HQ44X single ball micro-resistance ball check valve

HQ44X single ball micro-resistance ball check valve structure
HQ44X single ball micro-resistance ball check valve structure

Structural features

HQ44X single-ball micro-resistance ball check valve uses rubber-covered ball as the valve disc. The principle is that under the action of the medium, it 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)
Seal 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

HQ44X-10 / 16 overall dimensions

Nominal diameter 50 65 80 100 125 150 200 250 300
L (mm) 250 280 310 350 400 450 550 650 750
H (mm) 180 210 225 245 280 320 380 450 510
Connection size Flange connection size PN1.0MPa according to GB4216.4-84; PN1.6MPa according to GB4216.5-84