Unisex Airlock Toilets Braille sign for door leading to separate male & female facilities
An air lock (or vapor lock) is a restriction of, or complete stoppage of liquid flow caused by vapour trapped in a high point of a liquid-filled pipe system. The gas, being less dense than the liquid, rises to any high points. This phenomenon is known as vapor lock or air lock.
Flushing the system with high flow or pressures can help move the gas away from the highest point, or a tap (or automatic vent valve) can be installed to let the gas out.
Air lock problems often occur when one is trying to recommission a system after it has been deliberately (for servicing) or accidentally emptied
Braille and tactile sign. 180mm x 235mm
100% BCA/NCC compliant.
Silver Polypropylene 1.2mm