Page 580 - The City and Guilds Textbook: Plumbing Book 1 for the Level 3 Apprenticeship (9189), Level 2 Technical Certificate (8202) and Level 2 Diploma (6035)

The City & Guilds Textbook: Plumbing Book 1

2 Pop-up waste: these provide a handle, typically designed as part of the
tap, which, when pushed down, pops the waste plug up. They tend to have
specific sealing washers to seal the waste into the basin.

Bidets

Very similar in design to a WC pan, the bidet is often called a ‘sit-on washbasin’.
It is a hygienic method of ensuring personal cleansing, especially after using the
WC. It is often also used as a footbath. There are two distinctly separate types,
as described below.
1 Over-rim bidet: the over-rim type is the most common bidet. It is installed in the
same way we would install a washbasin. It is available with one or two tap holes,
p Figure 9.35 Pop-up waste
arrangement depending on the bidet design, and can be fitted with a variety of taps, including
monobloc mixers, pillar taps and hand spray-type mixers with a hose connection.
2 Ascending spray bidet: very rarely seen in the UK, the ascending spray bidet
uses a special tap arrangement to discharge water upwards from inside the
bowl of the bidet in a spray similar to a small showerhead.
HEALTH AND SAFETY
Special installation INDUSTRY TIP
arrangements exist for
the ascending spray bidet The installation of ascending spray bidets will be covered in later phases of your qualification.
because of the risk of
contamination of water
by backflow through the Ascending spray mixing valve
spray head. It must not
be installed on mains Ascending
pressure systems, and spray
the Water Regulations
should be consulted for all
installations of this type of
appliance.

p Figure 9.36 The over-rim bidet p Figure 9.37 The ascending spray bidet

Bidets are usually made from vitreous china. Styles include floor mounted,
back-to-wall and wall-hung types (Figures 9.38–9.40).

p Figure 9.38 Floor-mounted bidet p Figure 9.39 Back-to-wall bidet p Figure 9.40 Wall-hung bidet
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