Abstract: An end nut assembly comprising a nut body defining a first portion and a second portion, a first opening is adjacent the first portion and a second opening is adjacent the second portion, and an axial bore extends between the first opening and the second opening. A bite ring defines an outer ring and a plurality of teeth extends radially inwardly from the outer ring, and a spacer defines an inner surface and an outer surface, wherein the inner surface defines a cavity centrally located within the spacer. The end nut assembly does not contain an o-ring.

Abstract: A depth gauge and tube size identification tool that includes a housing that includes a first opposed side portion, a second opposed side portion, a top portion, and a bottom portion. An open face disposed within the housing and positioned between the first opposed side portion, the second opposed side portion, and the top portion. Two or more curved elements are disposed within the open face having a curved face portion with a radius of curvature that corresponds with the outside diameter of a tube intended to be inserted into the at least one curved element for identifying the tube size.

Abstract: A coupling for joining a first pipe segment to a second pipe segment that includes a first coupling segment and second coupling segment that has a first end, a second end, an outer surface, and an inner surface. Fastener openings are disposed on the first end and the second end, and the outer surface is contoured to define an arched shape that is higher towards an axial midpoint and lower towards the first end and the second end. The outer surface contains a band, a first skirt, and a second skirt on each side of the band. A seal groove is defined on the inner surface between two outer edges of the first coupling segment and a seal is disposed within the seal grove.

Abstract: A coupling with a main portion extending from a first end to a second end with an intermediate portion disposed between the first end and the second end. A main passageway extending from the first end to the second end. A first branch extending outwards from the intermediate portion containing a first branch passageway in fluid communication with the main passageway, and a second branch extending outwards from the intermediate portion and opposite the first branch containing a second branch passageway in fluid communication with the main passageway. External threads are disposed on an exterior surface of the first end containing an upper partition line and a lower partition line defined as the exterior surface of the first end, containing no external threads, and extending from the first end to the intermediate portion.

Abstract: A reducing tee that includes a main portion extending from a first end to a second end with an intermediate portion disposed between the first end and the second end. A main passageway extends from the first end to the second end, and a branch extends outwards from the intermediate portion containing a passageway in fluid communication with the main passageway. A water trap having a hollow body with a first open end, a second open end, an exterior surface, an interior surface, and a linear passageway extends between the first open end and the second open end disposed within the reducing tee.