Valves can be categorized based on their ends, materials, and pressure class. Common end types include screwed, socket weld, flanged, butt welded, and wafer. Common materials are cast iron, ductile iron, bronze, carbon steel, stainless steel, alloy steel, plastic, and glass. Pressure classes range from 150# to 4500#.

1. Presentation By
Gopalakrishnan.K. , Vadakkinedath , Eloor East ,
Kerala , India.

42.  Valves based on Ends.
 Screwed , Socket weld , Flanged. Butt
Welded. Wafer Type.

43.  Based on Material .
 Cast iron., Ductile iron , Bronze, Carbon steel
, Ss , Alloy steel, Plastic, Glass.

44.  Based on class.
 150#,300# , 400#, 600#,
900#,1500#,2500#, 800# ,4500#,

45. THANK YOU.