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The pressure-balanced shower valve compensates for changes in water pressure. It has a diaphragm or piston inside that reacts to relative changes in either hot or cold water pressure to maintain balanced pressure. As water pressure drops on one supply line, the valve reduces the pressure in the other supply line to match.
Valves of this type using a cylinder rather than a cone are sometimes encountered, but using a cone allows a tight fit to be made even with moderate manufacturing tolerances. The ball in ball valves rotates within plastic (usually PTFE) seats. Hands free infrared proximity sensors are replacing the standard valve. Thermostatically controlled ...
The first order from outside of Germany came in 1938. In 1948, the company was renamed to Friedrich Grohe Armaturenfabrik. [3] In 1956, Grohe purchased Carl Nestler Armaturenfabrik, with a factory in Lahr/Schwarzwald. [4] In the same year, the company launched the Skalatherm, an automatic mixing valve with integrated thermostat. [5]
As the liquid boiled inside the capsule, the capsule bellows expanded, opening a sheet brass plug valve within the thermostat. [5] [6] As these thermostats could fail in service, they were designed for easy replacement during servicing, usually by being mounted under the water outlet fitting at the top of the cylinder block. Conveniently this ...