Profile: Walter Frank & Sons Ltd. manufactures fire fighting fittings. We are accredited with ISO 9001 2000 certification. Our adapters are used when it is necessary to convert from either one size to another in the same connection system, or from one standard system to another. Our inlet breechings are used to feed water into a dry rising main. They are fitted with a drain valve to BS 5154, and have either two or four non-return valved instantaneous inlets, which are normally fitted with rubber blank caps & chains.