AylesburyTM Keraflo valves are high quality delayed-action float valves designed for prolonged use in demanding situations. These valves provide back-siphonage protection to BS1212 Part 2 in compliance with Water Regulations requirements for air gaps. Widely considered to be the best valves available, they are extremely durable and reliable.
Their design makes them suitable for use in tanks where a type AA or AB air gap is required. They are ideal for pumped systems as the on/off operation prevents water hammer and pump hunting. They are unaffected by water pressure fluctuations and their ceramic disc design means there is no washer or seal to wear out.
The ‘Type K’ pictured here is suitable for tanks with or without raised valve housings and is ideal for pumped water lines (e.g. rainwater). The puncture-proof float eliminates stress on the tank wall and gives precise hammer-free opening and closing.
The ‘up and over’ discharge facilites air-gap compliance.
Available in sizes from 1/2” to 2″ bsp.
The ‘Type KB’ valve provides a fully variable delayed action with precise opening and closing levels. It is especially suitable for use on a mains water feed into a break tank, so is ideal for rainwater harvesting systems of the indirect type. Fitted into an appropriate raised housing, the ‘KB’ type valve provides a type AB air gap in compliance with the Water Regulations requirements for backflow prevention.
The opening and closing levels of the valve are infinitely variable up to 1.8 metres depth and can be adjusted quickly without the use of any tools.
Available in sizes from 3/4” to 3″ bsp.