Perrin & Rowe - Langbourn single lever shower mixer with pressure balance valve

The pressure balanced shower mixer means a consistent flow even if taps are turned on and off elsewhere in the home.

The pressure balance valve fitted into the Perrin & Rowe shower mixer is sensitive to changes in incoming water pressure and thus provides safe showering. The pressure balance valve is a sophisticated plumbing device which ensures that the volume of mixed water which leaves the shower mixer is a constant mix of the hot and cold supplies, even if the delivery pressure of one of them changes. In the event of a drop in the hot or cold water supply, the output of the shower will immediately reduce to the pressure of the lowest supply line.

Pressure balancing shower mixers are suited to most systems. A minimum inlet pressure of 1 bar/100 kPa is required to achieve adequate performance. Accordingly, some gravity fed systems may not be suitable for pressure balanced shower mixers. The maximum inlet pressure is 5 bar/500 kPa.

The faceplate on these mixers includes a discreet red and blue dot to indicate hot or cold as well as the etched Perrin & Rowe insignia.