What is the difference between a High and Low Pressure Ball Float Valve

What is the difference between a High and Low Pressure Ball Float Valve

A Low Pressure Ball Float Valve is provided with a larger hole within the valve assembly (looking down inside the threaded end) to fill the tank or cistern up more quickly, however if the water pressure is too high this will result in excessive noise or water hammer. Conversely if a high pressure ballcock valve or insert (with small hole) is used the cistern (or tank) will take a long time to fill.

The below image shows the red low pressure float valve nozzle with the hole measuring approximately 5mm and white low pressure float valve nozzle with the hole measuring approximately 2mm


High pressure and low pressure float valves, Part 1 and 2, and replacement nozzles are available using the following link

Float Valves from On-Demand Supplies

High & Low Pressure Float Valve Nozzles

31st Dec 2018 Matt

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