Nipple for hot water tank conduits

Details Nipple for hot water tank conduits Nipple for hot water tank conduits

2005-10-25

2005-10-25

Hewitt, James M. (Department: 3679)

Pipe joints or couplings

With casing, lining or protector

Insulated

C285S215000, C285S219000, C220S567300, C220S592280

Reexamination Certificate

active

06957831

ABSTRACT:
A nipple for connection to an outer metal casing of a host water heater for coupling a water conduit to an inner casing of the hot water heater is described. The nipple is a hollow tube having opposed threaded end portions. A thermally insulating sleeve is provided about the hollow tube intermediate the opposed threaded end portions. The nipple is adapted for connection in a hole formed in the outer metal casing with the thermally insulating sleeve in contact with a circumferential edge of the hole to insulate the metal casing from the nipple.

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