• General rule of the institution
• Roll of plumber
• Plumbing operation
• Fixing  of brackets
• Fixing of sanitary appliances
• Laying of pipe lines
• Recreation, medical facilities and other extra- curricular activities of the institution

Importance of the safety and first aid

• Importance of safety for Trainees
• Basic rule for safety
• Precaution to be taken against fire
• First aid
• Casuality
• Respiration
• Treatment of a burn
• Incase of drowned
• To stop the bleding
• Foreign bodies
• If you find someone who has stopped breathing’what can you do to save his/her life?
• Mouth-to-mouth respiration
• Precaution observed in the section
• Describe while doing the plumbing work what are the preacaution should be followed

Different types of pipes and fittings used by plumber

• Pipes
• Gravity conduits
• Pressure conduits
• Pipe materials
• Size of pipe
• Various materials of pipes
• Asbestos cement pipes
• Castiron
• Expansion joint
• Belland spigot joint
• Advantages of cast iron pipes
• Disadvantage of cast iron pipe
• Cement concrete Pipes
• Advantage of cement concrete pipes
• Copper pipes
• Galvanised iron pipe
• Lead pipe
• Plastic pipes
• Steel pipes
• Advantages of steel pipes
• Wrought iron pipe

Water meter

• Water meter
• Positive displacement type meter
• The velocity meters
• Requirments of good water meter

Different types of fittings

• Galvanised iron(G1)
• Diescribe type of G.i fittings
• Cast iron fittings
• PVC materials

Brazing

• Brazing
• Different of brazing joints
• Advantage of brazing
• PVC pipes
• Hot gas welding of PVC pipes

Metals

• Name the commonly used ferrous metal
• Stats the main raw materials used for smelting of pig iron and their uses
• Name the ores used producing pig iron
• State the constructional feature of a blast furnace
• State the properties and use of pig iron

Cast iron

• Types of cast iron
• Grey cast iron
• White cast iron
• Malleable cast iron
• Nodular cast iron

Steel (Plain carbon steel)

• State the composition and properties of plain carbon steel

Non –ferrous metal

• Types of corrosion
• Electochemical effects on metals
• Types of corrosion not involving mechanical stress
• Oiling and gressing

Drill

• Flats or spade drill
• Straight fluted drill
• Twist drill
• Points
• Tang
• Flutes
• Shank
• Land/margin
• Body clearance
• Web

Drill angles

• Angles
• Point Angle/Cutting Angle
• Helix Angle
• Rake Angle
• Clearance Angle
• Chisel Edge Angle/Web Angle
• Designation of drill
• Drilling defects and causes
• Oversized holes
• Overheated drills
• Drilling machines (Portable type)
• Electric hand drill
• Pneumatic hand drill
• Hand operated
• Drilling machines
• The sensitive bench drilling machine
• Hand taps and wrenches
• Tap drill size
• What is tap drill size?
• Die and die stock
• Uses if dies
• Types of dies
• Circular Split Die/Button Die
• Half Die
• Adjustable Screw Plate Die
• Drill bits – Types and sizes
• Types of drill bits
• Parts of a twist drill
• Parts of flat drill

Terms used in house drainage

• Cowl
• Anti-siphonage pipe
• Fresh air inlet
• Siphonage
• Types of water tank
• Soil pipe
• Waste pipe
• Vent pipe
• Elevated reservoirs
• R.C.C water Tank
• Installation and fittings
• Manhole lid
• Steel tank
• Sump
• Different types of water distribution system
• Source of water
• Drawl of water from river bed
• Infiltration galleries
• Infiltration wells
• Tree or dead ends system
• Circle or ring system
• Grind iron system
• Radial system
• Gravity system
• Pumping system
• Dual system
• System of plumbing
• Single stack system in house plumbing
• One – pipe system
• One – pipe system partially ventilated
• Layout soil pipes and waste pipe in the sanitary fittings

Types of traps

• Trap
• Function of trap
• Requirement of a good trap
• Trap are classified into two
• According to the shape of traps
• 2 Q-Trap
• 3 S-Trap
• According to the use of traps
• 1 Floor trap or Nahni trap
• 2 Gully trap
• 3 Intercepting trap (or) interceptor
• Anti-D Trap

PVC pipes

• PVC pipes
• Advantages
• Disadvantages
• PVC Pipe fitting
• Unplasticized polyvinyl chloride
• Type A
• Type B
• Ring seal joints
• Solvent cement joint

Pipe fitting specification and identification

• Unions
• Nipples
• Close nipple
• Short nipple
• Long nipple
• Elbow(F)
• Elbow M+F
• Elbow 45 or spring (F+F)
• Bend (F+F)
• Hexagon nipple
• Coupling
• Bushings
• Bend 45 (F+F)
• Bend(M+F)
• Bend 45 (M+F)
• Union elbow
• Tee
• Crosses
• Reducing socket
• Types of pipe plugs
• Caps
• Special union elbow and tee
• Offsets

Types of PVC joints and their uses

• Union
• Socket
• Elbow
• Bend
• Tee
• Cross Tee
• Reducer
• Barrel nipple
• Double
• Plug

Different types of valves

• 1 Air (or) relief valve
• Working of air valve
• 2 Reflex valves (or) Check valves (or) Non-return valves
• Uses
• 3 Relief valve (or) Safety valve (or) Automatic cut off valve
• 4 Sluice valve (or) Gate valve (or) Shut-off valve(or) stop valve
• 5 Scour valves (or) Blow-off valves (or) Washout valves
• 6 Stop cocks
• 7 Bib cock
• Repair of water supply fittings – Bibcock
• Repair of water supply fitting-Stopcock
• Repair of Water supply fitting-Gate valve
• Repair of water supply fitting-Flushing cistern and float valve
• Gate-valve
• Non-return valve/check valve
• Non-return valve
• Globe valve – Parts – Advantages
• Reseating tool
• Valves and flange joints
• Flange joints
• Valves
• Gate-valve
• Globe valve
• Needle valve
• Plug-cocks
• Non-return valve
• Ball check-valves
• Relief valves
• Stopcock

Different types of sanitary fittings in house drainage

• Water closest
• 1) Indian type water closet
• 2 European type water closet (or) commode type closet
• The requirements of good type of water closet
• Flushingcisterns
• Functioning
• Toilet paper holder
• Washbasic
• Waste fittings
• Towel rail
• Shelf
• Mirror
• Pillar taps
• Sinks
• Drainboard
• Urinals
• Senso type urinals
• Water less urinals
• Flate back/corner urinals
• Stall urinalhalf
• Half stall urinal
• Squalt inplate urinal
• Bathtubs
• Taps

Bidets

• Bidet (FIG 1)

Apply for Certification

https://www.vskills.in/certification/Vskills-Certified-Junior-Plumber