Product Description
An Expansion Control Valve with a 700 kPa pressure rating and a 15mm connection is designed to manage the pressure within plumbing or heating systems, particularly in hot water systems where thermal expansion may occur. Here's a detailed breakdown of its features and typical uses:
Key Features:
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Pressure Rating (700 kPa):
- The 700 kPa rating indicates the maximum pressure the valve is designed to handle. This is equivalent to 0.7 MPa or about 102 psi.
- This makes it suitable for systems that require a lower pressure threshold compared to higher-rated valves, such as in residential hot water systems or certain heating systems where lower pressure is involved.
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Connection Size (15mm):
- The 15mm connection size refers to the pipe diameter the valve is designed to fit. 15mm is a common pipe size in domestic plumbing systems, so this valve is well-suited for household water heaters and smaller systems.
- It is essential that the pipes in your system are also 15mm for proper connection and installation.
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Function:
- Expansion Control Valves are used to regulate the pressure within a closed water system, which is particularly important in hot water systems where thermal expansion occurs when water heats up and increases in volume.
- The valve is designed to open and release excess water (and pressure) when it reaches a certain limit, preventing the system from becoming over-pressurized.
- This pressure regulation helps avoid damage to the water heater or plumbing system caused by excessive pressure.
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Material:
- These valves are typically made from durable materials such as brass or stainless steel, both of which are resistant to corrosion and able to handle high temperatures and pressures without failure.
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Application:
- Hot Water Systems: Expansion control valves are commonly used in domestic hot water systems to ensure that water pressure remains within safe limits as water heats up.
- Boiler and Heating Systems: Also used in boilers or hydronic heating systems, where water is continuously heated and pressurized, and the valve helps manage any thermal expansion in the system.
- Solar Water Heaters: Can be used in solar hot water systems where water pressure can increase due to the sun's heating effects.
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Safety Features:
- These valves are designed with pressure relief features, meaning they will open to release excess water and prevent system damage when the internal pressure exceeds the set limit of 700 kPa.
- This function helps avoid leaks, ruptures, or damage to the system components.
Typical Uses:
- Residential Hot Water Systems: Used in standard household water heaters to prevent over-pressurization caused by thermal expansion.
- Heating Systems: Found in radiant heating or hydronic heating systems, where controlling pressure is critical to safe and efficient operation.
- Solar Heating Systems: Helps control pressure buildup in solar hot water systems where the water can overheat due to sunlight exposure.
Installation:
- Location of Installation: The valve is typically installed near the hot water outlet or in the return line to prevent high pressure from building up within the system.
- Connection: The 15mm connection size means it will fit standard domestic pipes of the same size. Always ensure that the connection is secure and tight to prevent leaks.
- Professional Installation: While installation can be DIY for those with experience in plumbing, it is often recommended to have a qualified plumber install the valve to ensure it functions correctly and is installed safely.
Considerations:
- Pressure Setting: Ensure that the 700 kPa rating suits the pressure requirements of your system. If your system operates at higher pressures, you may need a valve with a higher pressure rating.
- Maintenance and Inspection: Regularly check the valve to ensure it is functioning correctly. Over time, sediment, mineral buildup, or damage could affect the valve's performance, leading to possible system pressure issues.
Benefits:
- Pressure Relief: Helps to prevent over-pressurization in the system, protecting your water heater and plumbing from damage.
- Durability: Made from high-quality materials such as brass or stainless steel for long-term use in residential and commercial applications.
- Cost-Effective: A 700 kPa expansion control valve is an affordable way to ensure that your plumbing system remains in safe working order, particularly for smaller systems.
Ideal Applications:
- Domestic Hot Water Systems
- Solar Water Heaters
- Boiler and Hydronic Heating Systems
