Why must I buy a Vented Tap with my Point of Use Geyser?

A low-pressure point-of-use geyser is also referred to as a "no-pressure" geyser, designed to operate at 0 kPa, unlike standard household geysers which are typically pressurized at 400-600 kPa.

Pressurized geysers are built to handle high pressure and are equipped with a T&P (temperature and pressure) safety valve. 

This valve ensures that if the thermostat fails and the water overheats, the excess pressure is safely released, preventing any potential damage.

However, if you install a low/zero-pressure geyser with a standard mixer, it will become a pressurized system. Without a T&P valve, the pressure from heating water will have no escape route, leading to a possible geyser failure or even an explosion, which could cause severe damage and injury.

This is why a vented mixer is mandatory for low-pressure geysers. In this setup, the outlet of the geyser is always open, preventing pressure buildup. If the thermostat fails, any excess pressure escapes safely through the mixer’s spout.

Additionally, our non-pressurized under-counter geysers feature plastic tanks that resist corrosion, providing an extended lifespan. However, if installed with a regular mixer, the tank may expand and crack under pressure, leading to water leakage—not a catastrophic failure but still an issue.

For safety, always use the appropriate vented mixer with low-pressure geysers.

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