Demand Valve

Some articles on demand valve, valve, demand, valves:

Twin-hose - Structure and Function of Diving Regulators - Regulator Accessories - Secondary Demand Valve (Octopus)
... in modern recreational diving, the typical single-hose regulator has a spare demand valve fitted for emergency use by the diver's buddy, typically ... on the primary DV that the diver uses, and the demand valve and/or hose may be colored yellow to aid in locating during an emergency ... The secondary demand valve can be a hybrid DV and buoyancy compensator inflation valve ...
Surface-supplied Diving - Surface Supplied Diving Procedures - The Working Diver - Emergency Procedures
... A slow leak can be controlled by opening the free flow valve, which will drive a moderate flow of water out of the exhaust valve ... It can be mitigated by opening the free flow valve and holding the opening level, facing down, and breathing very carefully ... Demand valve failure ...
Diver Rescue - Rescue Activities - Providing Emergency Gas
... a separate set brought down by the rescuer an "octopus" - a second, backup demand valve or mouthpiece on a scuba set that is already being used by the diver a "spare air" - a small independent set ... gas to the out-of-air diver provide the casualty with a secondary demand valve, preferably on a long hose, so that rescuer and casualty can breathe simultaneously, and concentrate their ...
Twin-hose - Types of Diving Regulator - Demand Valve
... A demand valve detects when the diver starts inhaling and supplies the diver with a breath of gas at ambient pressure ... The demand valve was invented in 1838 in France,and forgotten in the next few years another workable demand valve was not invented until 1860 ... Normandy, France, filed a patent for a twinhose demand regulator the diver was provided air through pipes from the surface ...
Doing It Right - Equipment and Configuration - "Doing It Wrongly"
... effectively deflate the wing Wing inflator with high flow rate supply hose and valve These use a non-standard connector, and can fill the wing dangerously quickly if the valve sticks open ... If the pulling force to operate is excessive, the cable ties connecting the hose to the inflator valve and manifold may fail, the buoyancy will be lost and the wing can no ... middle image on this page) Manifolds without isolation valves ...

Famous quotes containing the word demand:

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    Lewis H. Lapham (b. 1935)