| damper | a depressing restraint, rain put a damper on our picnic plans |
| valve | one of the paired hinged shells of certain molluscs and of brachiopods |
| valve | the entire one-piece shell of a snail and certain other molluscs |
accelerator
throttle
throttle valve | a valve that regulates the supply of fuel to the engine |
| ball valve | any valve that checks flow by the seating of a ball |
| butterfly valve | a valve in a carburetor that consists of a disc that turns and acts as a throttle |
clack valve
clack
clapper valve | a simple valve with a hinge on one side, allows fluid to flow in only one direction |
damper
muffler | a device that decreases the amplitude of electronic, mechanical, acoustical, or aerodynamic oscillations |
| damper | a movable iron plate that regulates the draft in a stove or chimney or furnace |
damper block
piano damper | damper consisting of a small felted block that drops onto a piano string to stop its vibration |
diode rectifying tube
rectifying valve | a thermionic tube having two electrodes, used as a rectifier |
exhaust
exhaust system | system consisting of the parts of an engine through which burned gases or steam are discharged |
| exhaust fan | a fan that moves air out of an enclosure |
| exhaust manifold | a manifold that receives exhaust gases from the cylinders and conducts them to the exhaust pipe |
| exhaust pipe | a pipe through which burned gases travel from the exhaust manifold to the muffler |
| exhaust valve | a valve through which burned gases from a cylinder escape into the exhaust manifold |
| heart valve | an implant that replaces a natural cardiac valve |
| hood exhaust hood | metal covering leading to a vent that exhausts smoke or fumes |
| intake valve | a valve that controls the flow of fluid through an intake |
poppet
poppet valve | a mushroom-shaped valve that rises perpendicularly from its seat, commonly used in internalombustion engines |
rocker arm
valve rocker | a lever pivoted at the center, used especially to push a valve down in an internalombustion engine |
safety valve
relief valve
escape valve
escape cock
escape | a valve in a container in which pressure can build up (as a steam boiler), it opens automatically when the pressure reaches a dangerous level |
| slide valve | valve that opens and closes a passageway by sliding over a port |
sluicegate
sluice valve
floodgate
penstock head gate water gate | regulator consisting of a valve or gate that controls the rate of water flow through a sluice |
| solenoid | a coil of wire around an iron core, becomes a magnet when current passes through the coil |
tube vacuum tube
thermionic vacuum tube
thermionic tube
electron tube
thermionic valve | electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope |
| valve | control consisting of a mechanical device for controlling the flow of a fluid |
| valve | device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone |
| valve-in-head engine | internalombustion engine having both inlet and exhaust valves located in the cylinder head |
mitral valve
bicuspid valve
left atrioventricular valve | valve with two cusps, situated between the left atrium and the left ventricle |
tricuspid valve
right atrioventricular valve | valve with three cusps, situated between the right atrium and the right ventricle, allows blood to pass from atrium to ventricle and closes to prevent backflow when the ventricle contracts |
| atrioventricular valve | either of two heart valves through which blood flows from the atria to the ventricles, prevents return of blood to the atrium |
| aortic valve | a semilunar valve between the left ventricle and the aorta, prevents blood from flowing from the aorta back into the heart |
| pulmonary valve | a semilunar valve between the right ventricle and the pulmonary artery, prevents blood from flowing from the artery back into the heart |
| semilunar valve | a heart valve with cusps shaped like half-moons, prevents blood from flowing back into the heart |
heart valve
cardiac valve | a valve to control one-way flow of blood |
| valve | a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it |
| ileocecal valve | valve between the ileum of the small intestine and the cecum of the large intestine, prevents material from flowing back from the large to the small intestine |
pyloric sphincter
pyloric valve
musculus sphincter pylori | the sphincter muscle of the pylorus that separates the stomach from the duodenum |
| mitral valve prolapse | cardiopathy resulting from the mitral valve not regulating the flow of blood between the left atrium and left ventricle of the heart |
mitral stenosis
mitral valve stenosis | obstruction or narrowing of the mitral valve (as by scarring from rheumatic fever) |
exhaust
exhaust fumes
fumes | gases ejected from an engine as waste products |
exhaust
wash up beat
tucker
tucker out | wear out completely, This kind of work exhausts me, I'm beat, He was all washed up after the exam |
exhaust discharge
expel
eject
release | eliminate (a substance), combustion products are exhausted in the engine, the plant releases a gas |
| exhaust | use up the whole supply of, We have exhausted the food supplies |
consume eat up use up
eat d deplete
exhaust
run through
wipe out | use up (resources or materials), this car consumes a lot of gas, We exhausted our savings, They run through bottles of wine a week |
run down
exhaust
play out
sap
tire | deplete, exhaust one's savings, We quickly played out our strength |