to the other end of lever 74 as a result operating unit body 71 moves up and down centered at hinge shaft 73 to thereby enable lever 74 to open and close on off valve 5 cover portion 6 covers the valve elements assembled in shower head body 11b and includes a cover body 61 cover body 61 is formed of a plurality of separable bodies 61a 61d to assemble cover body 61 to head body 11b connection holes 62 are formed on separable body 61c on the circumferential surfaces of separable bodies 61b and 61c in cover body 61 are formed one or more outlets 63b and 63c after these separable bodies 61b and 61c are combined with each other reinforced plate 8 is fixed to spool 4 and is assembled to bellows 3 in a contact state to prevent bellows 3 from being loose or damaged due to a long use on reinforced plate body 81 are formed flow paths 82 and fixing hole 83 for fixing spool 4 here both reference symbols p3 and p4 designate packings fig 6 is a front cross sectional view of the assembled fig5 apparatus the assembly state of the shower to which the present invention is applied will be described in more detail with reference to fig6 firstly bellows 3 is fixed to first and second cylindrical bodies 22 and 23 of support plate 2 and reinforced plate 8 is fixed to spool 4 then spool 4 is inserted into assembly hole 32 of bellows 3 and assembly hole 29 of support plate 2 to then tighten with a nut n1 on off valve 5 is assembled in shower head body 11b together with packing.