초록 ▼

In a rotary metering valve, a metering block is located in a chamber having a plurality of outlets. The metering block is connectable to a fluid supply and has an outlet selector rotatable to select one of several different outlets from the block to the chamber. A barrier extends between the wall of

In a rotary metering valve, a metering block is located in a chamber having a plurality of outlets. The metering block is connectable to a fluid supply and has an outlet selector rotatable to select one of several different outlets from the block to the chamber. A barrier extends between the wall of the chamber and the metering block to prevent fluid flowing in a 360 degree rotary motion around the block. A sprayer check valve is also disclosed. The valve has a diaphragm acted on by control fluid whose pressure is set to just below the spray fluid pressure and which is varied according to variations in the spray fluid pressure.

대표청구항 ▼

1. A rotary metering valve, comprising a body containing a chamber with an outlet thereto, and a metering block located in the chamber and having an inlet connectable to a fluid supply, at least one outlet, and an outlet selector having at least one aperture therein for alignment with an outlet of t

1. A rotary metering valve, comprising a body containing a chamber with an outlet thereto, and a metering block located in the chamber and having an inlet connectable to a fluid supply, at least one outlet, and an outlet selector having at least one aperture therein for alignment with an outlet of the metering block to permit flow of the fluid therethrough, wherein the outlet selector and the metering block are relatively rotatable one with respect to the other, means being provided to rotate one of the outlet selector and the metering block, at least one of the metering block and the outlet selector having a plurality of outlets such that relative rotation enables different fluid flow rates to be achieved, wherein the chamber has a plurality of outlets therefrom whereby fluid flowing from the metering block is supplied to all of said outlets, and a barrier extending between a wall of the chamber and the metering block to prevent fluid flowing in a 360.degree. rotary motion around the metering block.