Piping and Valves Unit 8 Slide 2 Todays Agenda Purpose of piping
and valves Material of construction and service Pipe fittings
Piping and valve connections Types of valves Hazards Maintenance
Troubleshooting Slide 3 Piping and Valves Piping Systems Move
fluids (liquids and gases) and some solids from place to place
Valves Control direction and flow rates of fluids as they move
through the system Two Types of Piping Systems 1. Process lines
that carry fluids & some solids 2. Service lines that carry
water, gas, steam and air Slide 4 Materials Metal Piping usually
for higher pressure service Pure metals Alloys (special service
corrosives, abrasives) Non-Metallic Pipe usually for utility and/or
corrosive service Clay or Concrete Plastic Glass Slide 5 Pipe
Fittings Join sections of pipe or change the direction or amount of
flow. Types Coupling Plug Reducer Others Slide 6 Bushing Plug
Coupling Reducer T Cross Union Bushing Slide 7 Connecting Pipes and
Valves Screwed Flanged Welded Glued or bonded Slide 8 Valves Valves
Block Gate Plug Ball Throttling/Regulating Globe Needle Butterfly
Diaphragm Check Swing Lift Ball A valve is a device for controlling
the flow of a material (most often gas or liquid). TYPES Safety and
Relief Safety gas service, quick opening Pressure Relief liquid
service, slower to open Slide 9 Valves Valves Block Gate Plug Ball
Throttling/Regulating Globe Needle Butterfly Diaphragm Check Swing
Lift Ball A valve is a device for controlling the flow of a
material (most often gas or liquid). TYPES Safety and Relief Safety
gas service, quick opening Pressure Relief liquid service, slower
to open Slide 10 Common Valves Ball Gate Butterfly Safety Slide 11
Piping and Valve Hazards Overtightening of valve Damage to stem,
internals, packing Back strain, pinch points, off balance May cause
a release from damaged packing Inattention to surroundings Personal
injury, pinch points, stumble, off balance, damage Not tightening
packing nuts Possible contact w/ chemical Leak to environment
Erosion of valve stem Not lubricating valve stems Back, shoulder,
muscle strain Damage to stem (bend) Corrosion Leaks to environment,
explosive atmosphere, personnel exposure Loss of product Slide 12
Monitoring and Maintenance Scheduled & preventive maintenance
Monitoring Inspect for leaks and corrosion Grease and lubricate
Adjust packing Labeling/numbering Check for loose valve parts
Listen for chattering Slide 13 Symbols Piping Valves Slide 14 Slide
15 Globe Valve Slide 16 Slide 17 Futher Investigation Pipe Fittings
Worksheet Valve Scenarios Worksheet
