flow is permitted of potable or fresh water into the system the valve 49a is located partly in inlet passage 100 and partly in connecting passage 101 its path of travel is limited by the upper and lower surfaces of connecting passage 101 which provide upper and lower valve seats respectively against which washers 47 and 51 push to provide either a seal for the inlet 100 or the atmospheric vent on outlet 26 in fig3 the diverter valve is in its normal position and the back flow preventer valve in the tub spout outlet path 102 and connecting passage 103 is shown in open position as it would be when compressed by flow of water through the assembly from connecting passage 101 through to tub spout outlet 104 fig4 shows the diverter valve in closed position or second position whereby flow to the tub spout outlet is prevented and flow to the alternative outlet which may be a handspray or wall mounted shower is permitted thus in this position water flows from inlet 100 into connecting passage 101 then through passage 102 into connecting passage 103 where it then flows around the top 44a of bicone valve 44 and up through the now open sleeve 40a where it exits out of aperture 39b into connecting passage 105 and into outlet 106 flowing to a hand shower or other device not shown flow further up the sleeve 40a is prevented by the combination of washer 38 and the.