Gulf Spic General Trading & Contracting Company Draughtsman Mechanical Interview Questions, Process, and Tips

Types of valves include ball valves, gate valves, globe valves, butterfly valves, and check valves.

• Ball valves: used for on/off control without pressure drop

• Gate valves: used for full flow or no flow applications

• Globe valves: used for regulating flow in pipelines

• Butterfly valves: used for throttling flow

• Check valves: used to prevent backflow

I will draw an isometric drawing of a simple cube.

• Start by drawing a square as the base of the cube

• Draw lines extending from the corners of the square at a 45 degree angle

• Connect the lines to form the sides of the cube

• Add shading to give the drawing a 3D effect

There are several types of valves used in mechanical systems for controlling the flow of fluids or gases.

• Gate valves

• Ball valves

• Butterfly valves

• Check valves

• Globe valves

• Needle valves

Pipe types include steel, copper, PVC, PEX, and galvanized.

• Steel pipes are commonly used for high-pressure applications.

• Copper pipes are durable and resistant to corrosion.

• PVC pipes are lightweight and easy to install.

• PEX pipes are flexible and suitable for hot and cold water systems.

• Galvanized pipes are coated with zinc to prevent rusting.