A valve assembly for controlling flow of water to a shower head includes a tube, which is insertable between and attachable to an inlet pipe for a shower enclosure and a shower head. A valve positioned in the tube regulates a flow of water through the tube. A shaft is attached the valve and extends through a sidewall of the tube and a housing. A biaser positioned in the housing is operationally engaged to the shaft and biases the valve to an open configuration. A lever arm is attached to and extends from the shaft. A handle is attached to the lever arm distal from the shaft. The handle can be moved by a user from a first position to a second position, thus actuating the biaser to rotate the valve from a closed configuration to the open configuration so that water flows through the tube to the shower head.