Equilibrium valve

(Steam Engine) a balanced valve. See under Valve.
A balance valve. See under Balance.
A valve for permitting air, steam, water, etc., to pass into or out of a chamber so as to establish or maintain equal pressure within and without.

See also: Equilibrium, Valve, Valve

References in periodicals archive ?
Once this is done, take a look at some of the equilibrium valves on the market and consider installing them instead of your tank or cistern's standard valve.