1 Swap in a new set of shoes, reconnect the brackets & springs, put the drum back on and youâre done.  Thereâs no need for compressors, or opening fluid lines to retract pistons with these setups. As a matter of fact, replacing brake shoes on some vehicles can be accomplished in under 2 minutes, once the drum is removed.
The bicuspid valve, sometimes better known as the mitral valve, allows blood to flow in only one direction (assuming it is functional) from the left atrium to the left ventricle, it prevents blood from flowing back from the left ventricle into the left atrium.
Heart valves are like doors that open and close. The valves open to allow blood to flow into the next chamber of the heart or into one of the arteries, and then they shut to keep blood from flowing backwards. The tricuspid valve is on the right side of the heart and separates the right atrium and the right ventricle.Normally, the tricuspid valve opens when the right atrium contracts. This allows blood to flow down into the right ventricle.The tricuspid valve is closed when the right ventricle contracts, allowing blood to flow out to the lungs. In tricuspid regurgitation, the tricuspid valve does not close properly.eart valves are like doors that open and close. The valves open to allow blood to flow into the next chamber of the heart or into one of the arteries, and then they shut to keep blood from flowing backwards. The tricuspid valve is on the right side of the heart and separates the right atrium and the right ventricle.