above of conventional construction and may include a set of a upstanding ears 36 which cooperate with a seating ring 38 which serves to guide the in line valve 28 in its movement between open and closed positions in the valve housing or shoe 40 the valve housing 40 has an opening 42 which is in use supplied with water under pressure from a municipal or other supply water system the outlet of the housing 40 at 44 will be closed when the seal 30 contacts under pressure the rim 46 of the seat 38 of the valve housing 40 effectively preventing water from entering the flow passageway of underground barrel 12 although housing 40 is shown in a horizontal configuration the housing may also be vertical or of any other suitable configuration as shown in fig1 the in line valve 28 is in an open position so that the water entering the valve housing 40 through its opening 42 will pass through the seat 46 to fill the underground barrel 12 as well as the aboveground barrel or hydrant 10 holding member 15 engages the tube 20 to maintain the in line valve 28 in an open position so that the valve will remain open for normal operation of the hydrant holding member 15 may be attached to hydrant 10 or to plate 14 as a separate or integral.