User Guide

54
PG-PF 724998 0320 PureFlow System
General
Upon completion of a Viega PureFlow
plumbing system installation, a
hydrostatic (potable water) pressure test
shall be conducted. If potable water is
not available, or the potential for freezing
conditions exists, pneumatic* (air or
nitrogen) testing and/or the use of an RV
antifreeze** solution are also acceptable
methods for pressure testing.
■ *Use air testing only if approved by
local code or the Authority Having
Jurisdiction (AHJ).
■ **RV antifreeze shall be drained and
󶈶ushed from all portions of the plumbing
system prior to consumer use.
Always refer to local plumbing code
for pressure testing requirements and
approved methods speci󶈵c to plastic
plumbing systems. If none is speci󶈵ed,
refer to the following table for acceptable
methods, test pressures, and durations.
ManaBloc Valve
Information!
Opening a port valve to an
empty or unpressurized
distribution line may cause valve damage.
To prevent potential valve damage or
failure, open the port valves before
󶈵lling and pressurizing the lines. The
force of water rushing to 󶈵ll an empty
line can cause the valve’s seal to “clip
o󶈴,” resulting in incomplete sealing or
complete valve failure.
CARE must be exercised when
opening a port valve to an empty
or unpressurized line. The 󶈵xture to
which the line is connected should be
in the OFF position and the valve must
be opened slowly until water starts to
󶈶ow into the line.
DO NOT CONTINUE to open the valve until
the line is full and pressurized. Open the
valve fully only after the line is up to system
pressure. The 󶈵xture can then be opened to
purge the line of air.
Valve stems are replaceable. Order
part number 51602.
WARNING!
WATER TESTING SHALL BE
AVOIDED DURING FREEZING
CONDITIONS. UNDER NO
CIRCUMSTANCES SHALL THE SYSTEM
BE TESTED AT TEMPERATURES
LOWER THAN 10˚F (-12˚C).
WARNING!
FOLLOW ANTIFREEZE
MANUFACTURER’S
INSTRUCTIONS FOR
CONCENTRATIONS. Use only
nontoxic antifreeze approved for
drinking water systems.
Note: If such a solution is used, the
antifreeze solution must be su󶈷ciently
concentrated to withstand the lowest
temperature encountered while the
testing 󶈶uid is in the system. Antifreeze
solutions should be purged and the
system 󶈶ushed with potable water prior
to consumer use.
Testing Viega PureFlow Systems
(Branch and Main / ManaBloc)
Test
Method
Min/Max
Duration
Max
Pressure
(psi)
Min
Pressure
(psi)
Allowable
Variance
(psi)
Water
15 min/
1 hr
100 40 NA
Air
15 min/
1 hr
100 40 8*
Pressure Testing PureFlow Systems