rare. [f. VALVE sb.1]
1. trans. To furnish with a valve or valves; to govern or check, to hold back, by a valve or similar device.
1861. Smiles, Engineers, II. 160. Whilst the fresh waters should be allowed freely to escape, the sea should be valved back, and prevented flowing in upon the land.
1899. Allbutt’s Syst. Med., VI. 512. It is probable that by these synapses the circuits of the nervous system … are … securely valved against regurgitation.
2. intr. To make use of a valve or valves; spec. in ballooning, to open a valve in order to descend.
1906. Westm. Gaz., 3 Oct., 8/1. All we could do was to undulate, alternately valving and ballasting.
