Stuart Turner Showermate S1.8 bar Twin - Manual (Page 10)

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3.12 Hose to pump: The pump inlet and outlet ports have fittings which are
specifically designed for connection to the G ¾ female running nuts on the flexible
hoses. The hose end running nut is fitted with a rubber sealing washer which is
held captive within the nut assembly. Locate the hose into position and screw the
nut fully onto the fitting by hand. Finally nip tight with pliers (4 to 5 Nm)
for a water tight seal (do not overtighten).
3.13 Hose to pipework:
1. The hoses are fitted with plastic push-in connectors, which must only be
connected with the following:
a) 15 mm diameter copper pipe to BS EN 1057 - R250 (half hard) - Table 3.
b) 15 mm plastic pipe to BS 7291 part 1 and part 2 (Table 1), or part 3
(Table 1) plus internal support sleeve*.
* The internal bore of the plastic pipe must be supported against collapse
with the pipe manufacturers recommended support sleeve (pipe insert).
c) Appropriate plumbing fitting that provides a leak tight connection.
Ensure the pipe is free from all score marks and deformities in the area of the
insertion depth (Fig. 9) and cut the pipe square, removing all burrs and sharp
edges to prevent damage to the sealing ‘O’-ring.
Fig. 8
Flexible hose
G ¾ running nut
assembly
Port fitting
Rubber sealing
washer (captive
in nut assembly)