any servicing of the interior of the liquid mix dispensing gun other moulded parts are the nozzle part and the valving mechanism which can take many different forms also a further moulded part is for example in the forms of the invention as shown in fig1 and 6 a rigid conduiting attachment member which is separate from the valving mechanism also forming part of a liquid mix dispensing gun in accordance with the present invention are the various plastic tubes in order to achieve the required entraining of the second liquid in the main stream various options are open which would also give rise to some mass production capabilities however in order to provide an aesthetic and easily to handle dispensing gun which also allows a control on the primary liquid flow an arrangement of the kind hereinafter disclosed have been chosen it is clear that if the flow control is after the mixing of the two liquids takes place the pressurized first liquid for example a source of pressurized water would feed back down through the conduiting for the second liquid which ideally is not under pressure this is because it is envisaged that the tube which will duct the second liquid to the mixing region of the nozzle part will simply be lowered for example into a bottle or other container of some detergent or the like which is to be entrained and mixed with the primary liquid prior to dispatch referring specifically to the drawings it can be seen that one of the two housing parts 1 provides with a plurality of ribs 2 means which will locate in appropriate contouring thereof the various members and will hold the same firmly in such condition with complementary ribs of the other housing part which when.