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Safety valve for boiler 1/2 without handle SKL (WTH903UN)
Product description: The safety valve for the SKL boiler (WTH903UN) is designed to protect your boiler from excessive pressure. With an opening pressure of 8 bar and a diameter of 1/2 inch, this valve ensures reliable operation and safety. Made in Italy, it guarantees high quality and durability.
Technical specifications
| Valve opening pressure: | 8 Bar |
| Diameter: | 1/2 inch |
| Country of manufacture: | Italy |
Replacement codes
The valve is compatible with the following codes:
- Ariston: 571730, 571706, 868367, 898367, 65150037, 65150437, 230206, 469220, 570126, 180401
- Universal: 571730, 180401, WTH900UN
Compatibility with Ariston models
The valve is suitable for the following models:
- 3100034 C&M10OUS
- 3100036 C&M15OUS
- 3100038 C&M30US
- 3100083 SIMAT10/5
- 3100084 SIMAT10ST/5
- 3100085 SIMAT15/5
- 3100086 SIMAT15ST/5
- 3100087 SIMAT30/5
- 3100142 CHX10RPL
- ... (and other models)
How to choose the right part?
When selecting a safety valve, pay attention to the following factors:
- Compatibility with your boiler (check models and replacement codes).
- Valve opening pressure – ensure it meets your device's requirements.
- Quality of materials and manufacturer – prefer established brands.
Common failure causes and prevention tips
Some common causes of safety valve failure include:
- Excessive pressure in the boiler.
- Improper installation or mechanical damage.
- Corrosion or buildup of deposits.
To prevent failures, follow these recommendations:
- Regularly check the pressure in the system.
- Perform preventive maintenance on the boiler and system.
- Avoid using non-original spare parts.
Replacement recommendations
Replacing the safety valve may seem like a challenging task, but with the right tools and instructions, it is quite manageable. Follow these steps:
- Turn off the water supply and electricity to the boiler.
- Clear the area around the valve of any debris.
- Unscrew the old valve using an adjustable wrench.
- Install the new valve, ensuring it is properly positioned and not cross-threaded.
- Tighten the valve securely, but without excessive force to avoid damaging the threads.
- Turn on the water supply and check for leaks.
Replacement difficulty
Replacement difficulty rating for the safety valve: Moderate. This requires basic plumbing knowledge and some tools, but with proper instructions, it is accessible even for beginners.