Page 116 - 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

 Table 2.18 Reducing tees

Reduced end and
Reduced end Reduced branch branch Two reduced ends

 Table 2.19 Tap connectors
Straight tap connector Bent tap connector

 Table 2.20 Cap ends

Compression cap end Push-fit cap end End feed capillary cap end

 Table 2.21 Connectors and manifolds
Tank connector Flexible connector Manifold

Low carbon steel pipes to BS EN

10255:2004 (formerly BS 1387:1985)

Low carbon steel pipe is used occasionally in domestic installations but its use
should be restricted to wet central heating systems, gas installations and oil
lines. It must not be used to supply hot or cold water supplies for domestic
purposes because of the risk of rusty water being drawn from the taps. Often
referred to as mild steel pipe, low carbon steel pipes are usually supplied painted
red or black and it can also be galvanised coated. Its carbon content is low.

It is available in three grades, each grade being identified by a colour code, as
shown in Table 2.22.
 Table 2.22 Carbon steel pipe grades and colour codes
Grade Colour code
Light Brown
Medium Blue
Heavy Red

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