HH44X micro resistance slow closing check valve

HH44X micro resistance slow closing check valve is a device used to prevent medium backflow and cancel destructive water hammer. It is mainly installed at the outlet of water pumps and is suitable for media such as clean water, sewage, seawater, etc. The working temperature is ≤ 80 ℃ (can be extended to 200 ℃), and the nominal pressure range is 1.0-2.5MPa. This valve is composed of valve body, valve cover, valve disc, valve shaft, and regulating valve components, with materials including gray cast iron, cast steel, stainless steel, and nitrile rubber seals.

It adopts a balance hammer device to make the opening force only one-fifth of that of a rotary check valve. The lightweight design of the valve disc can reduce fluid resistance, expand the opening, and significantly improve the energy-saving effect. The damping device supports 0-60 second slow closing time adjustment, and achieves water hammer pressure reduction through phased closing. The combination of rubber coated valve disc and stainless steel valve shaft enhances sealing stability and corrosion resistance (based on actual reports), with no vibration or noise during operation and long service life. The product complies with standards such as GB/T 13927, with a nominal diameter covering DN40-DN800, and is suitable for industries such as water supply and drainage, petrochemicals, etc.

The function of a micro resistance slow closing check valve is to prevent water backflow in the pipeline, also known as a rotary check valve or check valve. Micro resistance slow closing check valve model HH44X, valve body QT450 ductile iron material, using resin sand casting integrated molding, good toughness. The valve body structure is long, the valve plate is wrapped in rubber as a whole, with good elasticity, a swing design, equipped with a heavy hammer and piston, to achieve slow opening and closing function, and the pipeline will not vibrate when closed.

Structural characteristics of HH44X micro resistance slow closing check valve:

1. The structural length is short, only 1/4 to 1/8 of that of traditional flange check valves

2. Small size, light weight, and only 1/4~1/20 of the weight of traditional micro resistance slow closing check valves

3. The closing speed of the valve disc is appropriate, and the water hammer pressure is low

4. Both horizontal and vertical pipelines can be used for easy installation

5. Smooth flow channel and low fluid resistance

6. Sensitive action and good sealing performance

7. Short valve disc stroke and low impact force when closing the valve

8. Overall structure, simple and compact, beautiful appearance

9. Long service life and good reliability