Muffler Slow Closing Check Valve

Technical Parameter

Product model: HH49X, HDH48X, HH46X

Nominal pressure: PN1.0~2.5MPa

Nominal diameter: DN40~1000mm

Slow closing time: 3 to 60 seconds

Applicable medium: clean water, sewage, sea water

Applicable temperature: 0~80℃ (up to 200℃ if necessary)

Flange standard: GB/T 17241.6 GB/T 9113

Test standard: GB/T 13927 API 598


Product Detail

Product Features

The silencing slow-closing check valve can be used in the drainage pipes of clean water, sewage, seawater and other media, which can not only prevent the backflow of the medium, but also effectively limit the destructive water hammer and ensure the safety of the pipeline. The micro-resistance slow-closing butterfly check valve has the advantages of novel structure, small size, light weight, small fluid resistance, reliable sealing, stable opening and closing, wear resistance, long service life, oil pressure and slow closing are not affected by the medium. Good energy-saving effect and so on.


Material Of Main Parts

Part NameBodyDiscStem, cylinder, piston, springSeat
MaterialCast iron, cast steelCarbon steelStainless steelNitrile rubber


The Main Technical Parameters

ModelPNTest pressureProper temperatureApplicable mediaSlow closing time
CaseSeal
HH46X
HDH48X
HH49X
1.01.51.1≤80℃Clean water, sewage, sea water≤60s
1.62.41.76
2.53.752.75


消声缓闭止回阀(图1)


Main External Connection Dimensions

DNSizeDNSize
LHH1LHH1
4014020088350290480297
5015021598400310550324
65170225108450330585351
80180235118500350640379
100190280130600390720434
125200290148700430780491
150210310172800470840549
200230350210900510990600
25025041524010005501050655
30027045026412006301210770