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Technical Data
产品型号 Type | 公称通径 Nominal diameter DN | 性能规范Technical Data | 阀门材质Valve Material quality | ||||
公称压力PN(MPa) Nominal Pressure | 适用介质 Suitable medium | 适应温度(C) Suitable temperature | 阀 体 Valve body | 阀瓣 Valve clack | 密封圈 Sealing washer | ||
H41M-16C | 15~200 | 16 | 水、蒸气、 空气、油品 Water,steam, air and oil | ≤250 | HT200 |
1Cr18Ni9T |
8202 |
H41M-25C | 25~200 |
25 |
≤300 |
WCB | |||
H41M-25C | 50~200 | ||||||
Main dimensions
DN(mm) | L | D | D1 | D2 | b | Z-φd |
15 | 130 | 95 | 65 | 45 | 14 | 4-φ14 |
20 | 150 | 105 | 75 | 55 | 16 | 4-φ14 |
25 | 160 | 115 | 85 | 65 | 16 | 4-φ14 |
32 | 180 | 135 | 100 | 78 | 18 |
4-φ18 |
40 |
200 | 145 |
110 |
85 |
18 |
4-φ18 |
50 |
230 |
160 |
125 |
100 |
20 |
4-φ18 |
65 |
290 |
180 |
145 |
120 |
20 |
4-φ18 |
80 |
310 |
195 |
160 |
135 |
22 |
8-φ18 |
100 |
350 |
215 |
180 |
155 |
24 |
8-φ18 |
125 |
400 |
245 |
210 |
185 |
26 |
8-φ18 |
150 |
480 |
280 |
240 |
210 |
28 |
8-φ23 |
200 |
600 |
335 |
295 |
265 |
30 |
12-φ23 |
Stands Lies Dual-Purpose Loudspeaker Mute Check Valve: Advantages, Troubleshooting, Cleaning, and Specifications
The Stands Lies Dual-Purpose Loudspeaker Mute Check Valve is an advanced valve solution designed to provide backflow prevention and noise reduction in a single compact unit. Combining reliability, durability, and energy efficiency, this valve is suitable for HVAC systems, water pipelines, industrial fluid networks, and specialized audio-related applications. Its unique design ensures smooth one-way flow while minimizing operational noise, offering users both system protection and a quieter environment.
This guide covers the valve’s product advantages, troubleshooting methods, cleaning and maintenance procedures, and detailed specifications, providing technical insights for engineers, procurement specialists, and industrial users.
The main benefit of this valve is its dual-purpose design:
Check Valve Function: Prevents backflow, safeguarding pumps, compressors, and other equipment.
Mute Function: Reduces noise and vibrations caused by fluid turbulence or water hammer, improving operational comfort.
Valve Body: Made from stainless steel, carbon steel, or ductile iron for high strength and corrosion resistance.
Internal Components: Precision-engineered disc and springs ensure reliable sealing and long service life.
Integrating two functions into a single unit reduces the need for multiple valves and additional piping, optimizing installation space.
The streamlined internal design minimizes pressure drop, enhancing system efficiency and reducing energy consumption.
Suitable for:
Water supply pipelines
HVAC systems
Industrial fluid transport
Audio-related pipelines requiring noise suppression
| 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 |
| Disc Materials | Stainless steel, PTFE-coated metals |
| Seat Type | Metal-to-metal or soft sealing (EPDM, PTFE) |
| Connection Type | Flanged, threaded, welded |
Key Model Variants:
SL-DP-MCV-15–50: Small pipeline variant (DN15–DN50) for compact HVAC or water systems.
SL-DP-MCV-65–150: Medium size (DN65–DN150) for industrial applications.
SL-DP-MCV-200–300: Large diameter variant for high-capacity pipelines.

Even high-quality dual-purpose valves may experience issues if installation or operation conditions are not optimal.
| Problem | Possible Cause | Solution |
|---|---|---|
| Valve leakage | Worn disc or damaged seat | Replace or repair sealing components |
| Excessive noise | Debris, water hammer, or incorrect installation | Clean valve, check flow rate, ensure proper orientation |
| Disc stuck | Foreign particles or corrosion | Inspect, clean, and lubricate internal components |
| High pressure drop | Undersized valve or clogging | Replace with correctly sized valve, clean internal passage |
| Short service life | Incompatible material with fluid | Upgrade to corrosion-resistant materials |
Inspect disc and seat for wear every 3–6 months.
Remove debris or sediment from the valve to prevent obstruction.
Check and replace gaskets and seals during routine maintenance.
Monitor noise levels; unusual sound may indicate wear or flow issues.
Proper cleaning ensures optimal performance and long-term durability of the valve.
Shut down the system and relieve pressure.
Remove valve from pipeline if possible.
Flush with clean water or compatible cleaning fluid to remove debris.
Disassemble valve following manufacturer instructions.
Use a soft brush to clean disc, seat, and spring components.
Avoid abrasive materials that may damage sealing surfaces.
Reassemble valve ensuring all components are correctly aligned.
Test for proper sealing and mute function before returning to service.
Install upstream strainers to reduce sediment ingress.
Schedule periodic inspections and cleaning to maintain mute and check functions.
| User Feedback | Application | Observation |
|---|---|---|
| Reduced operational noise and vibrations | HVAC | Improved comfort and reduced complaints from building occupants |
| Reliable backflow prevention | Water supply | Protects pumps and system components, reducing maintenance costs |
| Compact installation | Industrial pipelines | Saved space and reduced system complexity |
| Long-term durability | Chemical and industrial fluids | Valve performed consistently over several years |
Insights:
Dual-function design reduces the number of valves and piping connections.
Proper installation is critical to achieving full noise reduction and backflow prevention.
Material selection should match the medium to prevent corrosion and wear.
| Feature | Dual-Purpose Mute Check Valve | Traditional Check Valve + Silencer |
|---|---|---|
| Space Requirement | Compact, integrated unit | Requires separate check valve and silencer |
| Installation Complexity | Reduced | Higher, more connections required |
| Maintenance | Easier, fewer parts | Multiple components to inspect and maintain |
| Cost Efficiency | Lower overall system cost | Higher initial and maintenance costs |
| Noise Reduction | Built-in | Requires additional equipment |
The Stands Lies Dual-Purpose Loudspeaker Mute Check Valve offers an innovative, reliable solution for systems requiring backflow prevention and noise reduction in a single compact unit. Its durable materials, integrated functionality, and low maintenance requirements make it ideal for HVAC systems, water pipelines, industrial applications, and audio-sensitive environments.
By following proper installation, maintenance, and cleaning procedures, operators can maximize valve performance, extend service life, and ensure quieter, safer fluid systems. For industries seeking efficient, space-saving, and reliable valve solutions, this dual-purpose mute check valve represents a smart investment.
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