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BCS6000C-9
to fill the pipe between Safety Shutoff Valve No. 2 and the manual shutoff valve.
Connect the tubing to Leak Test Valve No. 2 and immerse the open end in water as before.
Open Test Valve No. 2. If bubbles appear, record the leakage rate in bubbles/min and refer
to the IMPORTANT note at the end of this section.
IMPORTANT
The fact that bubbles are present during the leak test does not necessarily
mean that a safety shutoff valve is not functioning properly in the closed
position. Refer to the National Fire Protection Association’s publication
NFPA 86 for acceptable leakage rates for a given pipe size per UL, ANSI,
CSA, FM or EN standards. If the acceptable bubbles/min leakage rate
is exceeded, the safety shutoff valve is leaking and the
manufacturer’s instructions should be referenced for corrective
action.
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