hydrant to drain into the reservoir 72 fig1 shows yet another hydrant of embodiments of the present invention that is designed specifically for mild climate use under 2 u2032 bury and roof hydrants the outer pipe of the roof hydrant is a smaller 1 u00bd diameter pvc instead of the 3 u2033 used in some of the embodiments described above this hydrant uses a venturi without a check valve in concert with a pressurized reservoir a diverter is not used the operation is the same as described above with respect to hydrant with a pressurized reservoir with the evacuation of the reservoir being completed after the user detaches the hose fig2 is a table comparing the embodiments of the present invention which employ an improved venturi of that employ a bypass system with hydrants of the prior art manufactured by the assignee of the instant application the embodiment shown in fig7 for example provides an increased flow rate has an increased bury depth and can operate at lower fluid inlet pressures the evacuation time is discussed over the prior art while various embodiments of the present invention have been described in detail it is apparent that modifications and alterations of those embodiments will occur to those skilled.