Mother's Day is a celebration honoring mothers and celebrating motherhood, maternal bonds and the influence of mothers in society. It is celebrated on various days in many parts of the world, yet most commonly in March, April, or May.
Coils, rings, and corrugated ribbon are the common forms of packing used in valves. The form of packing to be used in repacking a particular valve will depend on the valve size, application, and type. Packing materials will be discussed in more detail later in this chapter.
If your valve is too damaged, you will need a new valve. This is called valve replacement surgery. Your surgeon will remove your valve and put a new one in place. The main types of new valves are: Mechanical -- made of man-made materials, such as metal (stainless steel or titanium) or ceramic.