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
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4 Design requirements
4.1 Supply fittings
4.1.1 Rated pressure
4.1.1.1
Supply fittings shall be designed for a rated supply pressure of 690 kPa (100 psi).
4.1.1.2
Supply fittings shall be designed to function at a supply pressure between 140 and 860 kPa (20 and
125 psi).
4.1.2 Rated temperatures
4.1.2.1
Supply fittings shall be designed for rated supply temperatures from 5 to 71 °C (40 to 160 °F).
4.1.2.2
The hot water components of low-pressure water dispensers shall be designed for rated supply
temperatures from 43 to 99 °C (110 to 210 °F).
4.1.3 Seating members
4.1.3.1
The following fittings shall have replaceable seats:
a) supply valves for bath and shower fittings, except concealed stops;
b) combination lavatory fittings;
c) combination kitchen sink fittings;
d) bidet fittings;
e) single lavatory faucets; and
f) exposed valve-type bath and shower fittings.
4.1.3.2
Seat disc arrangements shall be replaceable.
4.1.3.3
Seat disc arrangements shall not vibrate in service. When a threaded device is used to secure the disc, it
shall remain secure after the disc has been removed and replaced five times.
4.1.3.4
In lieu of a replaceable seat, as required in Clauses 4.1.3.1 and 4.1.3.2, a replaceable cartridge that
includes both seat and seal may be used.
4.1.3.5
The solenoid valve used to open and close the flow of water shall be replaceable.