초록 ▼

A plastic pipe fitting for use in an underground water sprinkler system. The fitting design uses multi-thread internal pipe threads on various types of fittings such as elbows, T\s, side outlet 90°fittings and side outlet T\s among other types. The multi-thread design permits at least two sizes of s

A plastic pipe fitting for use in an underground water sprinkler system. The fitting design uses multi-thread internal pipe threads on various types of fittings such as elbows, T\s, side outlet 90°fittings and side outlet T\s among other types. The multi-thread design permits at least two sizes of sprinkler heads to be connected as desired into the fitting. An improved inlet barb connection may also be used on the above fittings and on other types of pipe fittings used in the entire water sprinkler system to prevent improper clamping of connecting pipe on the inlet barbs.

대표청구항 ▼

A plastic pipe fitting for use in an underground water sprinkling system using plastic pipe and a plurality of fixed, vertically upright sprinkler heads having a top surface positioned at ground level, the fitting having a central body and at least one inlet connection for connecting to the plastic

A plastic pipe fitting for use in an underground water sprinkling system using plastic pipe and a plurality of fixed, vertically upright sprinkler heads having a top surface positioned at ground level, the fitting having a central body and at least one inlet connection for connecting to the plastic pipe and at least one outlet connection for connecting the fitting to the fixed, vertically upright water sprinkler head positioned above the fitting, comprising: (a) a central body having an internal bore therein; (b) at least one external barbed inlet connection formed on the central body and having an internal bore connected to the internal bore in the central body; and (c) at least one fixed, vertically upright outlet connection formed on the central body, the fixed outlet connection having formed therein an internal bore connected to the internal bore in the central body and having formed therein at least two different sizes of internal connecting threads positioned one on top of the other for use in attaching the plastic pipe fitting to one of at least two different sizes of water sprinkler heads having external threads thereon as desired, the water sprinkler heads being fixedly attached to the internal connecting threads so that the water sprinkler heads can always remain in a fixed, vertical upright position on the plastic pipe fitting with the top of the sprinkler heads positioned at ground level when installed in an underground sprinkler system.