scope:

This standard covers pitless adapters, pitless units, and sanitary well caps.

A pitless adapter shall consist of an inlet connection from a pump, an outlet connection, and a means of sealing against a well casing.

A pitless unit shall consist of a section of well casing and either a pitless adapter or the internal and external components to perform the function of a pitless adapter.

A well cap shall consist of a means to seal a well casing from the environment, a tamper-resistant means to secure itself to the well casing, and a path for electrical wiring to pass through to the pump.

Connections

Connections shall be in compliance with the standards referred to in the local plumbing codes.

Size Range

Well caps that are installed on 3 - 36 in (7.6 - 91 cm) well casings.

Pitless units of discharge sizes of 1 - 14 in (2.54 - 36 cm) of nominal diameter.

Pitless adapters that are installed on case sizes of 2 - 36 in (5.08 - 91.4 cm).