Features
1.The valve petal uses the "bullet" shape design,the valve uses a "drum"shape design,im-prove the medium flow,reduce the flow resistance coefficient.
2.The valve using a short structure form,although the head loss than lift silent check valve slightly larger,but the volume is small,the price is cheap.
3.The structure is compact,the guide shaft and the guide frame is arranged between the non metal lubricating sleeve,valve lift and flexible,does not produce the phenomenon of locking.
4.The skeleton type rubber sealing ring is directy mounted on the body,avoid the media long time on directly scour of the sealing ring,the service life is obviously prolonged,sturdy and durable.
5.The valve opening and closing stroke is short,can effectively prevent the generation of water hammer.
6.Suitable for water supply and drainage system of high-rise building,pipe network,can be installed at the exit of the pump,by slighty modifying the structure,can be used as a suc- tion end of the valve to use,but not suitable for the sewage pipe network.
Technical data
公称压力PN(MPa) Nominal pressure |
1.0 |
1.6 | |
试验压力 Testing Pressure | 壳体 Shell |
1.5 |
1.76 |
密封 Sealing |
1.1 |
1.76 | |
适用介质 Suitable mediums | 水及弱腐蚀性流体 Water and feebleness causticity fluid | ||
适用温度℃ Working temperature |
0~80 | ||
Meterial of main parts
零件名称Part name |
材料名称Meterial name |
阀 体 Valve body |
铸铁或不锈钢 Cast iron or stainless steel |
密封圈 Seal packing collar | 丁腈橡胶(NBR) Ding nitnile rubber(NBR) |
弹 簧 Spring |
不锈钢丝ICr18Ni9Ti Stainless steel wire ICr18Ni9Ti |
Main dimensions
PN (MPa) |
DN (mm) |
L |
D |
K |
b |
Z-φd |
40 | 105 | 145 | 110 | 18 | 4-φ18 | |
50 | 125 | 160 | 125 | 20 | 4-φ18 | |
65 | 135 | 180 | 145 | 20 | 4-φ18 | |
80 | 155 | 195 | 160 | 22 | 8-φ18 | |
100 | 165 | 215 | 180 | 24 | 8-φ18 | |
125 | 185 | 245 | 210 | 26 | 8-φ18 | |
1.6 | 150 | 205 | 280 | 240 | 26 | 8-φ22 |
200 | 265 | 335 | 295 | 30 | 12-φ22 | |
250 | 290 | 405 | 355 | 32 | 12-φ26 | |
300 | 290 | 460 | 410 | 32 | 12-φ26 | |
350 | 310 | 520 | 470 | 36 | 16-φ26 | |
400 | 330 | 580 | 525 | 38 | 16-φ30 | |
450 | 400 | 640 | 585 | 40 | 20-φ30 | |
500 | 450 | 715 | 650 | 42 | 20-φ33 | |
600 | 510 | 840 | 770 | 48 | 20-φ36 |
Silencing Check Valve: Solutions, Packaging, Technical Specifications, and Quality Control
The Silencing Check Valve is a specialized non-return valve engineered to prevent backflow while minimizing noise in fluid systems. Combining reliable flow control, advanced noise reduction, and durable construction, these valves are widely used in HVAC systems, water pipelines, industrial fluid networks, and chemical processing applications.
This guide provides an in-depth overview of solutions offered by silencing check valves, packaging and handling considerations, technical specifications, and quality control measures, offering a comprehensive resource for engineers, procurement teams, and industrial users.
Silencing check valves are designed with advanced damping mechanisms that reduce operational noise caused by fluid turbulence and water hammer. This makes them ideal for applications in office buildings, hospitals, residential complexes, and industrial facilities where noise reduction is essential.
These valves ensure unidirectional flow, preventing reverse flow that could damage pumps, compressors, and other sensitive equipment.
The streamlined design minimizes pressure drop, enhancing system efficiency and reducing energy consumption.
Silencing check valves are suitable for:
HVAC systems – quiet operation for air conditioning and heating pipelines.
Water supply networks – preventing backflow and reducing noise in municipal and industrial water systems.
Industrial pipelines – compatible with oil, gas, and chemical fluids for high-performance applications.
Power plants – ensuring safe and efficient flow control in high-pressure systems.
Proper packaging and handling are critical to ensure valves arrive in optimal condition for installation.
Individual protective covers for valve openings to prevent contamination.
Sealed cartons with cushioning materials to prevent impact damage during transport.
Anti-corrosion coatings or lubricants applied for steel valves during shipping.
Avoid dropping or mishandling valves during transport.
Store in a dry, temperature-controlled environment to prevent rust or degradation.
Inspect valves upon arrival for damage or missing components before installation.
| Valve Size | Packaging Type | Weight Range |
|---|---|---|
| DN15–DN50 | Individual carton with foam inserts | 2–5 kg |
| DN65–DN150 | Wooden crate with cushioning | 10–50 kg |
| DN200–DN300 | Heavy-duty wooden crate | 60–200 kg |
Silencing check valves come in a variety of sizes, materials, and pressure ratings to suit different applications.
| Parameter | Specification Range |
|---|---|
| Size Range | DN15–DN300 (½″–12″) |
| Pressure Rating | PN10–PN40 / ANSI Class 150–300 |
| Temperature Range | -20°C to +180°C |
| Body Materials | Stainless steel, carbon steel, ductile iron, bronze |
| Disc Materials | Stainless steel, PTFE-coated metals |
| Seat Type | Metal-to-metal or soft sealing (EPDM, PTFE) |
| Connection Type | Flanged, threaded, or welded |
Design Highlights:
Noise reduction features integrated into disc and seat design.
Minimal pressure loss to ensure system efficiency.
Durable construction for high-pressure and high-temperature operation.
Quality assurance is critical to ensure silencing check valves perform reliably under industrial conditions.
Compliant with ISO 9001, API 6D, ASME B16.34, and DIN standards.
Material selection verified for corrosion resistance, strength, and pressure tolerance.
Dimensional inspection to verify accurate machining of the valve body and internal components.
Pressure testing to confirm leak-tight performance.
Noise testing to ensure mute functionality meets design specifications.
Surface finishing inspection to ensure coating integrity and smooth operation.
Each valve is tagged with a unique serial number for traceability.
Material certificates, inspection reports, and test records are provided to ensure compliance with project requirements.
| Feature | Silencing Check Valve | Standard Check Valve |
|---|---|---|
| Noise Reduction | Built-in noise-dampening | Requires additional silencer |
| Backflow Prevention | Reliable one-way flow | Standard performance |
| Pressure Drop | Low due to streamlined design | Higher due to turbulence |
| Installation Space | Compact, integrated unit | May require separate noise-suppressing equipment |
| Maintenance | Simple, minimal parts | Standard maintenance required |
The Silencing Check Valve is a versatile, high-performance solution for industrial, commercial, and municipal fluid systems requiring quiet operation, reliable backflow prevention, and energy efficiency. Its durable construction, comprehensive technical specifications, and stringent quality control measures make it an ideal choice for modern pipelines.
Proper handling, installation, and maintenance ensure long service life and optimal performance, reducing noise, protecting equipment, and enhancing system efficiency. For industries seeking a compact, reliable, and low-noise valve solution, the silencing check valve represents a smart investment.
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