The Megaflo HE MK3 cold water inlet control kit functions as a critical safety and pressure regulation assembly for unvented hot water storage cylinders. This three-part multibloc mechanism integrates a 22mm primary isolating valve alongside a precision 3.0 bar pressure reducing valve equipped with a protective internal strainer. By stabilising incoming mains hydraulic pressure, the unit prevents excessive mechanical stress from damaging internal cylinder baffles and sensitive downstream brassware. The incorporated 22mm balance port allows engineers to supply corresponding cold water outlets at identical pressures to the hot feeds, eliminating temperature fluctuations during simultaneous domestic draw-offs.

Engineered specifically for compatibility across the Heatrae Sadia Megaflo Eco portfolio, including Solar, Systemfit, and Slimline variants, the assembly provides an exact OEM replacement solution. A factory-calibrated 8.0 bar expansion relief valve and integral check valve form the final mechanical tier, safely discharging excess volumetric expansion caused by standard thermal cycles. Constructed to endure aggressive thermal fluctuations, this exact specification component ensures closed systems maintain strict regulatory compliance while operating at peak volumetric efficiency.

Q: Which specific cylinder models accept this control multibloc?
A: It is designed for the Heatrae Sadia Megaflo Eco range including Mark 1, 2 and 3 variants.

Q: What is the factory set activation pressure for the relief valve?
A: The integrated expansion relief mechanism is securely calibrated to activate at exactly 8.0 bar.

Q: How does the assembly prevent debris from entering the cylinder?
A: A robust internal strainer is located within the pressure reducing cartridge to filter incoming particulates.

Q: Does the unit allow for equalised pressure distribution?
A: Yes, it includes a dedicated 22mm balance port to ensure matched hot and cold supply pressures.