초록

The recreational vehicle has a valve which is remotely controlled to permit remote draining of the drain water tank. The method of flushing the tank, including remote control of the drain valves is also included.

대표청구항 ▼

A recreational vehicle waste water tank flushing system comprising: a control system; a drain valve for connection to the recreational vehicle tank for draining the waste water tank, said drain valve being connected to said control system for opening and closing upon command by said control system,

A recreational vehicle waste water tank flushing system comprising: a control system; a drain valve for connection to the recreational vehicle tank for draining the waste water tank, said drain valve being connected to said control system for opening and closing upon command by said control system, said drain valve having a body having a drain passage therethrough, said body being a twopiece body including a first body half and a second body half, said first and second body halves having facing flanges for engagement to each other and means for clamping said flanges together, at least one of said body halves having a pocket therein, first and second gaskets between said first and second body halves, at least one of said gaskets having a gate pocket therein, said drain passage extending through said flanges and including openings in said gaskets between said flanges; a gate in said gate pocket in said gasket, said gate being movable from a position where it obstructs and closes said passage and is in contact with said first and second gaskets to seal said passage to a position where it is away from obstruction of said passage; an operating rod, said operating rod being smooth and being fixed to said gate and extending out of said body comprising said first and second flanges; a fluid cylinder, said fluid cylinder having a piston rod therein, said piston rod lying substantially parallel to and detachably connected to said operating rod; a fluid control valve connected to said fluid cylinder to move the piston therein and said piston rod; a source of fluid under pressure connected to said control valve for supplying fluid under pressure to said cylinder to move said piston therein to open and close said drain valve; a water spray nozzle for positioning in the recreational vehicle waste water tank for spraying the walls of the tank; a pressurized water supply valve connected to said spray nozzle for supplying water to said spray nozzle, said pressurized water control valve being connected to said control system, said water supply valve being for connection to the waste water tank and being connected to be controlled by said control system so that said control system opens said spray water valve and opens said drain valve for spraying down the walls of the waste water tank and thereupon said control system closes said spray water valve and said drain water valve and opens said water supply valve to fill the waste water tank and upon completion of filling said control system closes said water supply valve and opens said drain valve until the waste water tank is empty; and a fluid chemical degreaser dispensing tank, a chemical degreaser dispensing control valve connected to said chemical degreaser dispensing tank, said chemical degreaser dispensing control valve being for connection to the recreational vehicle waste water tank so that upon opening of said chemical degreaser dispensing valve, chemical is dispensed to the recreational vehicle waste water tank, said chemical dispensing valve being connected to said control system so that said control system controls said valves to spray the walls of the recreational vehicle waste water tank and thereupon said control system closes said drain valve and opens said chemical supply valve to place degreaser treatment chemical in the waste water tank.