A pressure relief or air release valve on a pressure tank that contains subterranean gas and is located in a building must be vented to the outside.
A buried or partially buried pressure tank installed on a water-supply well must:
be identified with the manufacturer's name, a serial number, the allowable working pressure, and the year fabricated;
have an interior coating that complies with ANSI/NSF Standard 61-2003e if the tank has an interior coating in contact with water;
have a minimum one-fourth inch wall thickness for a steel pitless adapter tank attached directly to the well casing;
have all connections to the pressure tank welded or threaded; and
be installed above the water table.
September 2, 2008
Copyright © 2008 by the Revisor of Statutes, State of Minnesota. All rights reserved.