Product

HH48_49X check valve

Brand：Pneumatic eccentric butterfly valve 型号：HH48

The following is a comprehensive information summary about the HH48/49X micro resistance slow closing butterfly check valve, combined with its structural characteristics, technical parameters, and market supply situation:
1、 Product Overview
The HH48/49X series check valve is a valve designed specifically to prevent medium backflow and suppress water hammer effects, suitable for pipeline systems with media such as clean water, sewage, and seawater. Its core function is to control the closing speed of the valve disc through a slow closing device, reduce pipeline impact force, and protect the safety of the water pump and pipeline.
2、 Core Features
Slow closing performance
Using a spring or oil pressure slow closing device, the valve disc quickly closes first and then slowly closes, effectively reducing the peak water hammer pressure.
Low flow resistance design
The double flap valve plate structure reduces fluid resistance and has a significant energy-saving effect (flow resistance is more than 30% lower than traditional check valves).
Sealing and Durability
Rubber soft seal (nitrile rubber) ensures zero leakage, wear resistance, and adaptability to corrosive media.
Silent operation
The buffer device ensures that there is no vibration or noise during the opening and closing process, making it suitable for environmentally sensitive scenarios such as urban water supply and drainage.
3、 Technical parameters
Parameter item specification range remarks
Some models support higher pressure levels with nominal pressure ranging from 1.0 to 2.5 MPa
Suitable temperature range: 0~80 ℃ (special requirements can reach 200 ℃). High temperature requires customized material
Caliber range DN40~DN600 flange connection, supports customization
The valve body material is ductile iron or stainless steel (304/316L) selected according to the corrosiveness of the medium
4、 Application scenarios
Municipal engineering: urban water supply and sewage treatment system.
Industrial sector: Circulating water pipelines in the chemical, power, and metallurgical industries.
Ocean engineering: seawater desalination, ship ballast system (requiring stainless steel material).