There are four heart valves. All are one-way valves. Blood entering the heart first passes through the tricuspid valve and then the pulmonary valve. After returning from the lungs, the blood passes through the mitral (bicuspid) valve and exits via the aortic valve.

A valve is a device used to control the passage of water, wastewater or other fluid through a pipe, duct, tube or other conduit. A valve acts as a door or flap which may open or close – manually or through automation – to control the movement of a fluid.

Devices with passages for directing flow into alternate paths.

Structures consisting of leaflets that divide the chambers of the heart and prevent the backflow of blood from one chamber to another during contraction of the heart.

Valves are fibrous flaps of tissue found between the heart chambers and in the blood vessel . Examples of valves found within the heart include right and left atrioventricular valves and semilunar val [..]

Many overhead-cam engines, particularly multi-valve models, are described by the total number of intake and exhaust valves in the cylinder head. A 24-valve V-6 engine would have four valves per cylinder: two intake and two exhaust valves. A 16-valve V-8 engine has only the standard single exhaust and single intake valve for each of its eight cylind [..]

Many overhead-cam engines, particularly multi-valve models, are described by the total number of intake and exhaust valves in the cylinder head. A 24-valve V-6 engine would have four valves per cylind [..]

A valve is a device that regulates the flow of gases in and out of the cylinders of an internal combustion engine. Intake valves allow the air and fuel to enter the combustion chamber, while exhaust v [..]

Many overhead-cam engines, particularly multi-valve models, are described by the total number of intake and exhaust valves in the cylinder head. A 24-valve V-6 engine would have four valves per cylinder, two intake and two exhaust valves. A 16-valve V-8 engine has only the standard single exhaust and single intake valve for each of its eight cylind [..]

Are controlling mechanisms that provide opening and closing of water into both drip and sprinkler systems. Will be normally in a valve box placed in the ground

The valve between the left ventricle and the ascending Aorta which prevents backflow into the left ventricle.

Flaps of Tissue that prevent regurgitation of Blood from the Heart Ventricles to the Heart Atria or from the Pulmonary Arteries or Aorta to the ventricles.

The valve, at the junction of the Cecum with the Colon, that guards the opening where the Ileum enters the Large Intestine.

The valve between the left atrium and left ventricle of the Heart.

Abnormal protrusion or billowing of one or both of the leaflets of Mitral Valve into the LEFT ATRIUM during Systole. This allows the backflow of Blood into left atrium leading to Mitral Valve Insuffic [..]

A valve situated at the entrance to the pulmonary trunk from the right ventricle.

The valve consisting of three cusps situated between the right atrium and right ventricle of the Heart.

Flaps within the Veins that allow the Blood to flow only in one direction. They are usually in the medium size Veins that carry Blood to the Heart against gravity.

Devices with passages for directing flow into alternate paths or to prevent flow.

Devices used to direct or prevent air flow within a system.

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