We were involved by a customer of the Manufacturer in helping them to design the Back Flow Prevention Devices for Invalid Baths. This type of equipment has a high level of risk of pollution from the water in them, so British Regulations require a high level of safety to prevent the supply in a building from being polluted. RAH Consultancy designed a Back Flow Prevention Device specifically for use with these Baths. They then liaised with the Water Undertakings and a test house so as to get these devices successfully approved.