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Duckbill exhaust valve for Draeger twin hose regulator. A duckbill valve is a check valve, usually manufactured from rubber or synthetic elastomer, and has two or more flaps, usually shaped like the beak of a duck. [1] It is commonly used in medical applications to prevent contamination due to backflow. A cross-section diagram of a Duckbill valve.
A Dräger two-stage twin-hose regulator Beuchat "Souplair" single stage twin hose regulator Twin 7l cylinders with Draeger harness, valves, manifold and regulator from c. 1965 Duckbill exhaust valve for Draeger twin hose regulator. The "twin", "double" or "two" hose configuration of scuba demand valve was the first in general use. [16]
A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. [1] Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various ...
Trickle valves can be used only on systems operating under negative pressure. The vacuum created inside the dust collector holds the valve closed, allowing a head of material to build up above the trickle valve. Once the pressure of the material equals the negative pressure of the system, the valve is forced open and a trickle of material will ...
Duckbill may refer to: Platypus, Ornithorhynchus anatinus; Duckbill dinosaurs, family Hadrosauridae; Duckbill fishes, family Percophidae; Duckbill eels, family Nettastomatidae; Duckbill choke, a shotgun accessory; Duckbill valve, a valve used to prevent back flow; Duckbill (rock formation), Oregon; Duckbill mask
A diving regulator or underwater diving regulator is a pressure regulator that controls the pressure of breathing gas for underwater diving.The most commonly recognised application is to reduce pressurized breathing gas to ambient pressure and deliver it to the diver, but there are also other types of gas pressure regulator used for diving applications.
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Leslie was purchased in 1989 by Watts Industries, Inc. of Andover, Massachusetts, which made water valves and was trying to increase its share of the valve industry. Leslie's 1988 sales were $33 million, Watts had sales of $181 million. [13] Leslie bought K&M Valve Company in 1995. [14]