Install Instructions

Pressure Testing Viega PureFlow Systems
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IM-PF 724596 1021 PureFlow Water System (EN)
14 Pressure Testing Viega PureFlow Systems
Upon the completion of installing a Viega PureFlow plumbing system, a
hydrostatic (potable water) pressure test shall be conducted. If potable
water is not available, or the potential for a freezing condition 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 "Testing PureFlow Systems (Branch and Main /
ManaBloc)" on page 79 for acceptable methods, test pressures and
durations.
14.1 General
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.