Micro ball check valve
A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category.
Key words:
Classification:
Ductile iron valve series
Description
A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category. The valve may be operated manually or with a hand wheel, handle or pedal, and may also be controlled to vary the pressure, temperature and flow rate of the fluid medium. The valve can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used as required by external inputs (I. e., to adjust the changing set point of the flow through the pipeline). The automatic control valve does not need to be manually operated according to its input and setting, so that the valve can accurately control the various requirements of the fluid medium. Valves can also be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard customized valve materials, etc.
◆ Product overview
HQ44X/45X micro-resistance ball check valve, using rubber wrapping ball as the valve disc, under the action of the medium, can roll on the slideway in the valve body, thus opening or closing the valve, large flow resistance loss, good sealing performance, muffler closed, can reduce the water hammer wave. Horizontal or vertical mounting is acceptable. Can be used for cold water, hot water, industrial and domestic sewage and other pipe network pump outlet, to prevent the medium back flow.
◆Technical parameters
Nominal pressure: 1.0 ~ 1.6MPa
Nominal diameter: 50~1000mm
Applicable medium: water and weak corrosive fluid
Applicable temperature: 0~80 ℃
Flange standard: GB/T 17241.6
Test standard: GB/T 13927
◆ Typical installation diagram
◆ Material of main parts
| Serial Number | 1 | 2 | 3 | 4 |
| Part Name | Valve body | Disc | Spring | Valve seat |
| Material | Cast iron, ductile iron | Cast copper, stainless steel | Stainless Steel | Copper, stainless steel |
◆ Main outline connection dimension
| 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 |
| L1 | - | - | - | - | - | - | 550 | 650 | 689 | 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 |
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