cold water Flashcards
what are trunk mains?
they may be as 610mm (2ft) in diameter they carry the water in bulk and often over long distances.
what are street mains?
they run beneath the street and side streets
how is the plumber involved in connecting to a mains?
its usually done by trained main layers
what is the name of the tool for connecting mains?
a ferrule
what way will water mains be laid out in a town in?
laid out in the form of a grid.
what can water mains be made from?
Pvc , asbestos cement or cast iron.
what is the name of the pipe from the stop valve into the house called?
this is known as the service pipe and is usually 750mm underground
what is the freezing point of water at sea
0 degrees Celsius
what is the minimum spacing distance for a 15mm horizontal copper pipe?
1200 mm
what is the correct name for the cold water pipe from a storage cistern?
distributing pipe.
the cold water supply to an entire property is isolated at the?
supply stop valve on entry to the premises
what is trace heating?
where you cover the pipe in a thermal installation
what is the rain water cycle?
evaporation, condensation, precipitation and infiltration
MDPE can be connected by?
fusion weld compression and push fittings
what is the use for feral connector?
connect pipework when the system is live
