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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.
The oropharyngeal airway was designed by Arthur Guedel. [2]Oropharyngeal airways come in a variety of sizes, from infant to adult, and are used commonly in pre-hospital emergency care and for short term airway management post anaesthetic or when manual methods are inadequate to maintain an open airway.
The jaw-thrust maneuver is a first aid and medical procedure used to prevent the tongue from obstructing the upper airways.This maneuver and the head-tilt/chin-lift maneuver are two of the main tools of basic airway management, and they are often used in conjunction with other basic airway techniques including bag-valve-mask ventilation.
Diaphragm valves (or membrane valves) consists of a valve body with two or more ports, a flexible diaphragm, and a "weir or saddle" or seat upon which the diaphragm closes the valve. The valve body may be constructed from plastic , metal or other materials depending on the intended use.
Tongue thrusting is an adaptive means of closing an open (or incompetent) lip state, caused by a unique combination of anatomical reasons, or; Tongue thrusting is the cause or potentiator of an open or incompetent lip state, which resists efforts at behavioural change or clinical attempt at remedy. In generality, tongue thrusting is poorly ...
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Turning a valve knob or lever adjusts flow by varying the aperture of the control device in the valve assembly. The result when opened in any degree is a choked flow . Its rate is independent of the viscosity or temperature of the fluid or gas in the pipe, and depends only weakly on the supply pressure , so that flow rate is stable at a given ...
Pinch valves employ an elastic tubing (sleeve/hose) and a device that directly contacts the tubing (body). Forcing the tubing together creates a seal that is equivalent to the tubing's permeability. [1] Air-operated pinch valves consist of an elasticised reinforced rubber hose, a type of housing, and two socket end covers (or flanges).