Abstract: A safety valve installed in the water filling hole of the steam chamber of a steam cleaner and adapted to regular the inside pressure of the steam chamber, includes a valve body threaded into the water filling hole, a valve tube adapted to close/open the water filling hole subject to the steam pressure in the steam chamber, a driving disk fixedly fastened to the valve body, an actuating member fastened to the valve tube, a rotary cap adapted to rotate the valve body in and out of the water filling hole through the driving disk, and a clutch member adapted to control connection between the rotary cap and the driving disk subject to the presence of steam in the steam chamber.

Abstract: A steam cleaner includes a steam boiler having a steam outlet, a control valve having a plug rod moved to close/open the steam outlet, a hose holding a steam tube and a steam nozzle head at one end of the steam tube for steam output control, a push bar pivoted to the steam boiler and turned between a first position where the plug rod is moved forwards to open the control valve and a second position where the plug rod is returned to close the control valve, a return spring adapted to hold the push bar in the second position, and a pull cable inserted through the hose and connected between one end of the push bar and a trigger at the steam nozzle head for pulling the push bar from the second position to the first position upon pressing of the trigger.