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.
Rating Newest Oldest. Best Answer: I hope this helps: Mitral valve allows the blood to flow from the left atrium into the left ventricle. The tricuspid valve is the three flapped valve on the right side of the heart, between the right atrium and the right ventricle which stops the backflow of blood between the two.E: Valves that prevent backflow in the heart? What valve prevents back-flow into the left ventricle? What valve prevents back-flow into the right atrium? What valve prevents back-flow into the left atrium?