Page 99 - The City and Guilds Textbook: Plumbing Book 1 for the Level 3 Apprenticeship (9189), Level 2 Technical Certificate (8202) and Level 2 Diploma (6035)

Chapter 2 Common processes and techniques

● portable pipe threading machine
● hydraulic machine bender
● hydraulic crimping kit
● portable pipe freezing kit.
INDUSTRY TIP
Power drills
The chuck on a rotary hammer
Power drills come in three basic types, as described in Table 2.11. drill should be kept well oiled
 Table 2.11 Types of power drill to prevent breakdown.

Rotary hammer drill
This type of drill has a standard chuck so
accessories such as metal drills and hole
saws can be used.

SDS hammer drill
This type of drill uses the secure drill system
(SDS) bayonet-type fixing to secure the drill
bits into the chuck.
This type of drill is necessary when using
core bits. p Figure 2.5 Circular saw
Cordless drill
Typical voltages are from 14.4 V to 36 V.
These drills are available in many forms,
from screwdriver-type drills to large-voltage
SDS types.

p Figure 2.6 Jig saw
Circular saw
Circular saws are very useful tools for lifting floorboards and notching joists.
Care should be taken to ensure the blade guard is in place and that the blade is
securely fastened.
Jig saw

Jig saws are used for cutting out sinks and wash hand basins in worktops in p Figure 2.7 Reciprocating saw
kitchens and bathrooms. Always ensure the blade guard and blade are securely
in place.

Reciprocating saw
Reciprocating saws are a useful addition to the toolkit, the reciprocating saw INDUSTRY TIP
should not be used where accuracy is required. Different blades can be used to
cut different materials, such as wood, plastic, metal, tile and stone. The oil level of hydraulic
low carbon steel bending
Hydraulic low carbon steel bending machines machines should be checked
periodically and topped up as
Hydraulic low carbon steel bending machines use pressure from hydraulic oil to necessary.
bend steel pipe.

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