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AVG ECV20/550 20mm 3/4" 550kPa ECV Expansion Control Valve

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    The AVG ECV20/550 20mm (3/4") 550 kPa ECV Expansion Control Valve is Australian Watermark approved. The AVG ECV valve is cross compatible as a direct swap with most mainstream brands such as Reliance, Nefa and Tomson. An insulation jacket is included which allows for a professional look and minimal heat loss. 

    The AVG ECV valve works in conjunction with a matching PTR valve of the same color code (The ECV valve pressure rating is lower than the matching PTR valve pressure rating) to regulate the pressure in the hot water systems. The water in the water tank expands during heating cycle when heated and this expansion causes excessive pressures. The ECV valve can relieve this pressure via dripping water out in a controlled manner. 

    The AVG ECV valve fits perfectly with mainstream solar, electric and gas storage hot water heaters such as Rheem, Vulcan, Rinnal, Dux, Aquamax, Thermann, Apricus and Solahart.

    Please note this AVG ECV Valve in 20mm 3/4" thread size with high 46kW rating is commonly used for commercial hot water services where the plumbing code requires this rating and sizing. This AVG ECV valve can work with all residential hot water services also. However, a smaller 15mm 1/2" ECV valve coupled with a reducer fitting is usually used for residential applications to save the costs, where only a lower 20 kW rating is needed.


    Technical Details

    Manufacturer: Australian Valve Group (AVG)
    Model: ECV20/550
    Maximum Pressure Rating: 550 kPa
    Expansion Rating: 46 KW 
    Color Code: Black
    Thread Size: 3/4" BSP (20mm) Male MI Thread 
    Physical Thread Measurement: 25.441mm internal/external thread diameter (Refer to the BSP sizing chart in the photo gallery)
    Material: DR Brass
    • Australian Watermark Approved (Australian Standard AS1357.1 under Licence No. 2639 and meets AS4020, Drinkable Water Standard) 
    • Suitable for installations in either horizontal or vertical tanks
    • This valve is designed to automatically reseat after each action
    • Insulation Jacket included
    • Manufactured under quality control assurance ISO 9001 and ISO 9002
    Intended Use: Electrical tanks, solar tanks, gas storage tanks and heat pumps
    Package Weight: 350g

    Package Contents

    • AVG ECV20/550 550kPa 20mm (3/4") ECV Expansion Control Valve
    • Insulation Jacket


    1 year replacement (parts only) warranty from the order date. Proof of purchase is required. 

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