automatic gas shutoff device
In a gas-fired water heater, a device that shuts off the gas supply if the water temperature in the heater […]
Glossary
Glossary
Glossary
automatic control valve
A valve designed to control the flow of steam, water, gas, or other fluids, by means of a variable orifice
Glossary
automatic door
1. A power-operated door that closes when subject to an abnormally highambient temperature, an unusual rate of temperature rise, or
Glossary
automatic dry-pipe sprinkler system
A sprinkler system in which the piping up to the sprinkler heads is either filled with compressed air or air
Glossary
automatic dry standpipe system
A standpipe system in which all piping is either filled with compressed air or air at atmospheric pressure; the water
Glossary
automatic elevator, self-service elevator
An elevator which starts and stops automatically in response to the pushing of a button at one of the landings
Glossary
autoclaved aerated concrete
A lightweight concrete usually made by adding aluminum powder or calcium carbide to concrete mortar which is subject to autoclave
Glossary
autoclaving cycle
1. In autoclave curing, the time interval between the start of the temperature- rise period and the end of the