Abstract: A flow priority valve receives input fluid flow and divides the fluid flow between a primary device and a secondary device. The valve comprises a valve body have a bore formed therein, the bore having first and second ends and first and second annular channels formed in communication with the bore. The valve body further includes an input flow channel formed in communication with the bore for receiving the input fluid flow. A spool is movable within the bore and has a first land and a second land adjacent opposing ends of the spool. A spring is positioned within the bore for biasing the spool towards the first end of the bore. An electronically variable orifice (EVO) for electronically adjusting flow includes an EVO input portion in fluid communication with both the first annular channel and the first end of the bore, and an EVO output portion in fluid communication with both the second end of the bore and the primary device. The second annular channel is in fluid communication with the secondary device.

Abstract: A process for the production of the highly durable titanium dioxide pigment in which the pigment is coated with a phosphate, a silicate and a hydrous oxide of zirconium and aluminium in specified carefully controlled amounts and order of deposition.

Abstract: A process for the treatment of titanium dioxide pigment in which there is added to a slurry of the pigment a compound of silicon, of aluminium, of zirconium and of titanium, changing the pH of the slurry to 7.5 to 8.5 prior to adding a compound of silicon, an acidic compound of aluminium and an alkaline compound of aluminium, thereby producing a coated pigment.

Abstract: A process for the treatment of titanium dioxide pigment which involves adding to a pigment slurry a compound of phosphorus, of aluminium, of zirconium, of titanium and of silicon, adjusting the pH of the slurry to a value of from 3.5 to 4.5, followed by adding to the slurry a compound of phosphorus of an alkaline reacting compound of aluminium prior to the addition of mineral acid to adjust the pH of the slurry to a value of 6.5 to 8.