Acorn metering valve assemblies are used to replace damaged / worn out valves in showers & lavatories. These units regulate water flow and have adjustable valve timings ranging from 5 to 60 seconds to prevent misuse of water in prison toilets. They include 90-degree plastic elbows, flow control & retainer nuts, plastic Air-Trol left-hand bodies, nylon compression nuts, retainer clips, screws and O-rings for easy repair or replacement of existing valves on aluminium & china fixtures with integral bubblers. Selected tempering valves have brass construction to prevent scalding and allow mixing of hot & cold water to deliver water at optimal temperature.