hereinafter tube 24 may have any type of discharge nozzle selectively removably mounted thereon a seal ring 28 is mounted on tube 26 as seen in fig1 a pair of oppositely disposed locking lugs 30 and 32 project from tube 26 adjacent the inner end thereof as seen in fig3 tube 26 has a bore or passageway 34 extending therethrough body portion 14 includes a horizontally disposed cylindrical body member 36 at its inlet 18 which has a bore or passageway 38 extending therethrough the inner end of body member 36 joins a vertically disposed hollow cylindrical body member 40 having a vertically disposed cylindrical chamber or passageway 42 formed therein the inner end of bore 38 of body member 36 communicates with a small opening 44 formed in the side wall of body member 40 so that water may flow through passageway 38 through opening 44 and into chamber 42 above the lower end of body member 40 a generally cylindrical valve guide or insert 46 is selectively removably positioned in chamber 42 above the lower end thereof valve guide 46 has an annular valve seat 48 formed therein at the lower end thereof which communicates with bore 50 formed in valve guide 46.