butterfly valve

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butterfly valve
top: open valve
bottom: closed valve

butterfly valve

n.
1. A disk turning on a diametrical axis inside a pipe, used as a throttle valve or damper.
2. A valve composed of two semicircular plates hinged on a common spindle, used to permit flow in one direction only.

butterfly valve

n
1. (Mechanical Engineering) a disc that acts as a valve by turning about a diameter, esp one used as the throttle valve in a carburettor
2. (Mechanical Engineering) a non-return valve consisting of two semicircular plates hinged about a common central spindle

but′terfly valve`


n.
1. a clack valve having two flaps with a common hinge.
2. a valve, as the throttle valve in a carburetor, that swings about a central axis across its face.
[1860–65]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.butterfly valve - a valve in a carburetor that consists of a disc that turns and acts as a throttlebutterfly valve - a valve in a carburetor that consists of a disc that turns and acts as a throttle
carburetor, carburettor - mixes air with gasoline vapor prior to explosion
valve - control consisting of a mechanical device for controlling the flow of a fluid
References in periodicals archive ?
203 mm) butterfly damper was designated as BF8 whereas, OB12 was assigned to a 12 in.
Tenders are invited for Flame guard fiberglass damper 36" diameter, CUSA style #300 FF, #150 flange x flange end butterfly damper, with hand wheel operator, PTFE shaft seals, viton blade seal and FRP blade stops.