Current through March 28, 2022
Install a check valve or equivalent if
any of the following apply:
utilization equipment might induce a back-pressure.
(2) The gas utilization equipment is
connected to a source of oxygen or compressed air.
(3) Liquefied petroleum gas or other
supplementary gas is used as standby and might flow back into the meter. A
three-way valve installed to admit the standby supply and at the same time shut
off the regular supply, can be substituted for a check valve if
(4w) At locations where service regulators
might be submerged during floods, either a special anti-flood type breather
vent fitting shall be installed, or the vent line shall be extended above the
height of the expected flood waters.
Wis. Admin. Code Public Service
CR Register, October,
1999, No. 526, eff. 11-1-99.
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