SILENCING SLOWLY-CLOSING CHECK VALVE
Product Model:HH49X
Nominal Diameter:40-1200mm
NominalPressure:1.0~2.5MPa
suitable temperature:0°C~80°C
suitable Medium: water, sewage

SILENCING SLOWLY-CLOSING CHECK VALVE
Product Model: HH49X
Product Overview
The HH49X Silencing Slowly-Closing Check Valve is designed to prevent backflow and minimize noise and shock during closure. It combines the features of a check valve and a throttle valve, providing slow closure to reduce water hammer and protect pipeline systems. The valve is suitable for water supply, drainage, fire protection, HVAC, and industrial applications.
Key Features
- Backflow Prevention
- Automatic Operation: Opens and closes with media flow to prevent reverse flow.
- Water Hammer Prevention: Slow closure reduces pressure surges and protects pipelines.
- Noise Reduction
- Innovative Design: Features rubber sleeves and noise-reducing components to absorb vibrations and reduce noise.
- Quiet Operation: Ensures minimal noise in residential, commercial, and industrial applications.
- Durable Construction
- High-Quality Materials: Constructed from corrosion-resistant materials for long service life.
- Reliable Sealing: Ensures tight closure and prevents leakage.
- Efficient Design
- Low Resistance: Streamlined design minimizes pressure drop and energy loss.
- Versatile Installation: Suitable for both horizontal and vertical installations.
Technical Specifications
Parameter |
Details |
Nominal Diameter |
40-1200 mm |
Nominal Pressure |
1.0-2.5 MPa |
Operating Temp. |
0°C-80°C |
Media Compatibility |
Water, sewage |
Connection |
Flanged (GB/T17241 standard) or threaded |
Quality Standards & Certifications
- Design & Manufacturing: Complies with GB/T13927, API598.
- Materials: Meets GB/T17241.6, GB/T9113 for flange standards.
- Certifications: ISO 9001, CE (industry standards for quality and safety).
Typical Applications
- Water Supply Systems
- Prevents backflow in residential and commercial water pipelines.
- Drainage Systems
- Ensures proper drainage and prevents backflow in sewage systems.
- Fire Protection Systems
- Protects against reverse flow in fire suppression systems.
- HVAC Systems
- Maintains proper airflow and prevents contamination in heating and cooling systems.
- Industrial Applications
- Suitable for various industrial processes requiring backflow prevention.
Why Choose HH49X Silencing Slowly-Closing Check Valves?
- Safety: Effective backflow prevention ensures system integrity.
- Efficiency: Low resistance design minimizes energy loss.
- Durability: High-quality materials ensure long service life.
- Quiet Operation: Innovative design reduces noise and vibrations.







