16
■
Tightening Level for Connecting Section
Tightening level
Reference torque
(N
・
m)
OD 4mm nylon pipe
(Valve discharge port)
Turn compression bushing
with hands until it stops and
then tighten it 2/3 turn with a
spanner ,etc
3.4
OD 6mm copper tubing
& steel tubing
(Valve discharge port)
Turn compression bushing
with hands until it stops and
then tighten it 2/3 turn with a
spanner ,etc
4.1
OD 6mm copper tubing
& steel tubing
(Undercut joint)
Turn the nut part with hands
until it stops and then tighten
it 1/4 turn with a spanner ,etc
21
OD 8mm copper tubing
& steel tubing
(Undercut joint)
Turn the nut part with hands
until it stops and then tighten
it 1/4 turn with a spanner ,etc
25
Taper screw for tubing
Rc1/8
(Pump discharge port
& junction)
Turn the undercut joint with
hands until it stops and then
tighten it two and a half to
three turns with a spanner ,
etc
7.1
Ceiling Washer
(Brass & Aluminum)
Nipple on the suction side
with hands until it stops and
then tighten it 1/5 turn with a
spanner ,etc
20.4
