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Slow Closing Check Valve
Product overview
The product series of HH46X, HH48X, HH49X silence slow closing check valves can be used in the drainage pipelines transporting water, sewage, sea water and other media which can prevent the backflow of the media and effectively limit the damaging water hammer, so as to ensure the safety of pipelines. It has some characteristics such as novel structure, small size, light weight, small fluid resistance, reliable seal performance, smooth opening and closing, wearing resistance, long service life, oil pressure, slow closing without the influence of media and better energy-saving effect, etc.
Product Features
1. The structure length is short, and its structure length is only 1 / 4 ~ 1 / 8 of the traditional flange check valve
2. Small volume, light weight, its weight is only 1 / 4 ~ 1 / 20 of the traditional micro resistance slow closing check valve
3. The valve disc closes quickly and the water hammer pressure is small
4. Horizontal or vertical pipes can be used and installed conveniently
5. The flow channel is unobstructed and the fluid resistance is small
6. Sensitive action and good sealing performance
7. The stroke of valve disc is short and the impact force of closing valve is small
8. Overall structure, simple and compact, beautiful appearance
9. Long service life and high reliability
Execution Standard
Flange end：GB/T17241.6 GB/T 9113
Test & check：GB/T 13927 API 598
Performance Parameter
Nominal diameter：DN40~1000mm
Nominal Pressure：PN1.0~ 2.5MPa
Slow closing time：3~ 60秒
Applicable media：water
Applicable temperature：0≤80℃（Up to 200 ℃ if necessary）
Main materials：Cast iron, cast steel
