Use and Care Manual

Table Of Contents
ASME A112.18.1-2018/CSA B125.1-18 Plumbing supply fittings
July 2018 © 2018 Canadian Standards Association
68
Figure 5
Set-up for back siphonage and hidden check valve test
(See Clauses 5.9.3.2.2.3, 5.9.3.2.2.4, and 5.9.3.3.3.)
Drain
Coloured
water
Sight tube
13 mm (0.5 in)
submersion
Inlets
Specimen
Deck level
(mounting surface)
Vacuum/pressure
gauge
Vacuum pump
and tank
Water
(Valve 1)
Atmosphere
(Valve 2)
Vacuum
(Valve 3)
Vacuum regulator