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.
Electronic Expansion Valve. Of the above seven types, Capillary tube and orifice belong to the fixed. opening type, while the rest belong to the variable opening type. Of the above. seven types, the hand operated expansion valve is not used when an automatic. control is required.