resideo Braukmann DS05 Guide Rapide page 3

Water Capacities
The suitability of a given regulator size is dependent on the pressure requirements where it will operate. For the
pressure regulator valve size required for a specific installation, determine the following:
1. Pressure differential between inlet and outlet pressure in pounds per square inch (psi),
2. Capacity in gallons per minute (gpm), and
3. Allowable reduced pressure falloff in psi. Given these variables, use Table 2 to determine the proper size pres-
sure regulator valve for your application.
Pressure Reduced
Regulator Valve Pressure Falloff
Size
3/4"
1"
DS05 Fixture Unit
Flow rates based on submittal sheet DS05, based on flush tank systems with a 15 psi fall-off defined by IAPMO/ANSI
Uniform Plumbing Code® and ICC International Plumbing Code®.
Capacities are based on a 100 psi supply pressure and a difference of 50 psi or more between the initial supply
pressure and the reduced no-flow pressure.
Check local water pressures before selection.
Size
3/4"
1"
Table 2. Water Capacities.
25 psi
Flow Capacity (
(PSI) US gpm)
6 7.5
10 12.8
15 18.5
20 22.5
6 7.0
10 13.9
15 22.5
20 27.7
Table 3.
I/s GPM
1.39 22.0
1.80 28.6
DS05 LEAD FREE PRESSURE REGULATING VALVES
Pressure Differential Between Inlet and Outlet
50 psi
Flow Capacity
(US gpm)
8.8
14.5
22.0
26.9
7.9
17.2
28.6
34.8
Fig. 3. Flow Capacities
Fixture Units
34
50
3
75 psi 100 psi or more
Flow Capacity Flow Capacity
(US gpm) (US gpm)
9.7
15.9
23.3
29.5
5.3
15.9
32.1
40.9
10.1
16.7
24.7
31.3
5.3
17.2
36.5
46.2
33-00575EF—03