Uponor AquaSAFE, Installation Manual

Page: 64 / 72

Flow test setup
The four following requirements are
necessary for a proper flow test.
1. Pressure gauge installed immediately
downstream from the system’s
main shutoff valve
2. Marked bucket capable of
holding 30 gallons of water
3. Long piece of 2" or larger rigid pipe
4. Flow test assembly (see Figure 11-2)
The pressure gauge records the
residual pressure during the flow
test. To measure accurately, the
gauge must have a maximum
pressure reading that is slightly
higher than the normal static
pressure. For example, if the
static pressure is 65 psi, install
an 80 psi gauge. Note that a
gauge that reads too high will
not measure the lower residual
pressures adequately.
The pressure gauge is also
critical should troubleshooting
be necessary. (Refer to the
Troubleshooting section on
page 60.)
Flow test assembly
The flow test assembly
consists of the following parts
(see Figure 11-2).
• Short, ½" galvanized,
threaded nipple (4" max.)
• Two ½" x 1" galvanized,
threaded bushings
• 1" full-port ball valve
• Appropriate sprinkler orifice
Figure 11-2: Flow
test assembly
Figure 11-3: Flow test bucket
58 l Uponor AquaSAFE System Installation Guide