Pressure Reducing Valve For Steam

pressure reducing
(Pressure Reduction) Reduction of interface pressure, not necessarily below the level required to close capillaries (i.e., capillary-closing pressure).

valve
A cylindrical mechanism in a brass instrument that, when depressed or turned, admits air into different sections of tubing and so extends the range of available notes
device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
A membranous fold in a hollow organ or tubular structure, such as a blood vessel or the digestive tract, that maintains the flow of the contents in one direction by closing in response to any pressure from reverse flow
a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
control consisting of a mechanical device for controlling the flow of a fluid
A device for controlling the passage of fluid through a pipe or duct, esp. an automatic device allowing movement in one direction only

steam
The invisible gaseous form of water, formed by boiling, from which this vapor condenses
The expansive force of this vapor used as a source of power for machines
The vapor into which water is converted when heated, forming a white mist of minute water droplets in the air
steamer: travel by means of steam power; "The ship steamed off into the Pacific"
emit steam; "The rain forest was literally steaming"
water at boiling temperature diffused in the atmosphere