User Guide

Pressure Testing PureFlow Systems
56
PG-PF 724998 0320 PureFlow System
Stage 2: Gradually increase system
pressure to 50 psi (over the course of
approximately 1 minute).
■ Wait for 10 minutes before inspecting
pressure gauge.
■ If pressure holds stable, continue to
Stage 3.
■ If pressure falls over the test period,
look for potential leaks with an
approved leak-detect solution. Once
system pressure is completely relieved
and the leak is 󶈵xed, restart testing
procedure from beginning.
Stage 3: Gradually increase system
pressure to 100 psi (over the course of
approximately 1 minute).
■ Inspect gauge pressure over next
10-minute period to verify pressure has
not decreased more than the allowable
variance noted in the table on the
preceding page.
■ If pressure variance allowed is not
exceeded, the system test has passed.
■ If pressure decreases more than the
allowable variance, the test has failed.
Apply approved leak-detect solution
(see “Leak detection” below) on 󶈵tting
and/or manifold connections to isolate
the location of the leak. Once system
pressure is completely relieved and the
leak is 󶈵xed, start testing procedure
from beginning.
Completing the Air Test
Depressurize system.
■ Use of the same safety equipment
applies to these steps.
■ Slowly bleed o󶈴 any remaining air
pressure from system (approximately
1-minute duration).
■ Notify other trades the test is complete
and the work area is safe to occupy.
■ Document the time and date the test was
completed and the pressure and duration
of the test.
Leak Detection
Viega has identi󶈵ed the leak-detection
solutions listed below as being compatible
for use with Viega PureFlow Press
system components. Consult leak-detect
manufacturer for proper application and
product instructions. To determine the
compatibility of other leak-detection
solutions not listed below, contact Viega
Technical Services prior to their use.
■ megabubble
®
Leak Detector
■ Oatey
®
All Purpose Leak Detector
■ Snoop Liquid Leak Detector
As an alternative leak detection, a mixture
of Original Palmolive Green
™
dishwashing
soap (#46100-46200) or Palmolive Ultra
™
(#356140 or 46128) mixed with potable
water at a ratio of two ounces of soap to
one gallon of water (mix Ultra at a ratio of
1.5 ounces per gallon) may be used.
Note: If the solution does not show a leak
on any of the caps or 󶈵ttings, isolate the
ManaBloc by turning the valves to the
“OFF” position, repressurize if needed
and apply the same solution to the
ManaBloc manifold components.