Flexible Hose

It’s recommended to check all flexible hoses so as identify if they have the WRAS (Water Regulations Advisory Scheme) stamp. These WRAS flexible hoses contain EPDM  rubber of a smaller bore than standard Non WRAS flexible hoses. This then lessens the build-up of bacteria within the hose and complies with BS 6920. EPDM material can contain bio films and encourage the growth of  Legionella bacteria.

The hot water temperature of potable water can be raised up to 70 degrees when using brass fittings or 65 degrees when using plastic fittings. Flexible hoses can be fitted under height adjustable wash hand basins or sinks

The risk level can be reduced from low to ALARP if the WRAS approved hoses are installed and eliminating the risk.

The diameter generally used for taps is 15 mm and have a WRAS marking stamped at the top of the fitting. The flexible hose will be made from stainless steel with a plastic tape of either blue or black running through the hose. Some have working pressure of 10 to 15 bar capacity.

Some advantages of using a flexible hose are that they are flexible, strong and durable. They are usually found in health care or in commercial premises.

Flexible hoses reduce the risk of cross infections especially when fitted with category 5 situation like when attached to bidet or WC.

The water regulations apply to drinking and non-drinking water and require that the EPDM surface layer be smooth and not pitted. The flow of water is then free of Phthalates.

Flexible hoses are quick and easy to fit in a static situation.