valve

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  • noun

Words related to valve

a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it

device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone

the entire one-piece shell of a snail and certain other molluscs

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one of the paired hinged shells of certain molluscs and of brachiopods

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References in periodicals archive ?
The ventilator controls the exhalation valve and forces exhaled gas to the vocal chords to allow speech.
Since the CV-2+ utilizes a threshold resister/balloon type "Bennett" exhalation valve, it "honks" loudly as Mathews and Czervinske also found during high load conditions with PEEP.
The Bird Mark 7 and Mark 8 Respirators shunted 50 psig gas from the 'center body' to power not only the nebulizer but to push a diaphragm over an orifice in the exhalation valve during the inspiratory phase.
The respirator has two designs -- with or without an exhalation valve.
With Double Elastic With Activated Absorbent Filter For Oddur Organic Vapour ,Sulfuric Acid With One Way Exhalation Valve , Confirming To Is-9473:2002 With Isi Marked
The lawsuit also claimed that Derek Martin's breathing apparatus malfunctioned because the exhalation valve stuck, making it necessary for him to remove his mask and struggle to unstick the valve.
Many believe this is because these ventilators depend on flow measurements made back inside the ventilator, proximal to the exhalation valve, instead of at the proximal airway.
PAP was achieved using a rubber face mask fitted with a rotating metal disk over the exhalation valve which was used to vary the extent of restriction to exhalation, thus producing positive pressure during the exhalation phase.
Tenders are invited for Cup Type Net Reinforced Respirator With Exhalation Valve Double Red Elastic Head Bands - For Dust / Cold Dust / Mist Is 9473: 2002 With Isi Marked Colour : Yellow.
Since the CV-3+ utilizes a balloon type Bennett exhalation valve, it "honks" loudly during high load conditions with PEEP.
This new patient interface device includes an enhanced mask cushion, a new exhalation valve and adjustable gel forehead cushion to again provide better comfort and compliance.