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Sanitation

Exam revision materials for Plumbing Level 2&3 and ACS Gas Safety test

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Sanitary Appliances

Traps

Shower Trap

  • Can be dismantled from the top
  • Flow rate 36Ltr/min
  • Fits 40mm pipe
  • suitable for a shower tray with 90mm hole
  • patented 50mm seal
  • All traps meet the minimum requirements of BS EN 274-2:2002
< Go Back2013-06-09

Shallow Bath Trap

  • Manufactured from high temperature white polypropylene
  • provides 38mm seal
  • discharge to a trapped gully
  • fits plastic pipes to BS 5254 and BS 5255 and copper pipes to BS 659 and BS 2871
  • Manufactured to BS EN 274
  • diameter 40mm
< Go Back2013-06-09

HepVO Trap

  • can be installed vertically or horizontally
  • Waterless – no need for trap primer
  • Admits Air – auxiliary venting not required
  • One Way Valve – prevents foul odors
  • No Siphonage. No Noise. No Smell
  • Not vulnerable to evaporation or freezing
  • Perfect to solve problems in existing failing systems and on applications where fixtures are only used occasionally, such as guest bathrooms, holiday homes, boats and mobile homes
  • Applications:
    • Garbage Disposal (Vertical Only)
    • Urinal (Vertical Only)
  • Should have 10º or 18mm fall
  • more
< Go Back2013-06-09

Interceptor Trap

  • the last inspection chamber before the sewer enter
  • Also known as  Buchan Trap
  • located in a domestic sewer pipe to prevent vermin entering the pipe
  • The trap uses a water seal to prevent rats and mice climbing any further along the pipe
  • was devised in the 19th century
  • more
< Go Back2013-06-09

Trap requirements

  • MIN 55mm depth remaining trap after trap performance test
  • MIN 25mm in the worst scenario under working and test conditions

Appliance

Ø(mm)

Seal (mm)

Wash Basin; Bidet

32

75

Bath; Shower Tray

40

50

Kitchen Sink; Sink Macerator; food waste disposal; Urinal bowl; Dishwasher; Washing machine

40

75

WC<80mm

75

50

WC>80mm

100

50

Wash Basin (without plugs on spray type – industrial usually)

32

50

Straight to gully: Shower Tray; Bath; Washing machine; Dishwasher

40

38

 

< Go Back2013-06-09

Bottle Trap

  • It's not suitable for kitchen sink
  • Used for wash basins with a pedestal or to fit in a confined space
< Go Back2013-06-07

Straight Through S-trap

  • Also known as 'Pedestal trap'
  • Reduces the flow of water
  • Easy to get blocked
  • For pedestal wash basin application with the waste pipe comming out of the floor
  • Constructed from high temperature polypropylene
  • 32mm compression outlets
  • Conforms to BS EN 274-1:2002
  • Also 90mm adjustable model is available
< Go Back2013-06-07

Antisyphon Bottle Trap

  • Also known as 'Resealing trap'
  • Suitable for use with basins and sinks
  • Neutralises negative syphonic pressure and eliminates gurgling
  • Conforms to BS EN 274-1:2002
< Go Back2013-06-07

Running Trap

  • public toilets;
  • sink macerators
< Go Back2013-06-06