Abstract: Apparatus and methods are provided for the extension of access conduits to access underground valves and the like. A valve can extension comprising a tubular member having an extension riser portion at one end and an inwardly tapered portion at the other end. The extension riser portion has a substantially constant inner and outer diameter defining a substantially uniform wall thickness. The inwardly tapered portion is adapted to be inserted into and frictionally engage a valve can bell housing. The valve can extension and valve can bell housing assembly form a conduit from grade level to the bell portion having a substantially uniform inner and outer diameter. A simple friction fit joining method is provided to negate the need for complex mechanical coupling devices.

Abstract: Apparatus and methods are provided for the extension of access conduits to access underground valves and the like. A valve can extension comprising a tubular member having an extension riser portion at one end and an inwardly tapered portion at the other end. The extension riser portion has a substantially constant inner and outer diameter defining a substantially uniform wall thickness. The inwardly tapered portion is adapted to be inserted into and frictionally engage a valve can bell housing. The valve can extension and valve can bell housing assembly form a conduit from grade level to the bell portion having a substantially uniform inner and outer diameter. A simple friction fit joining method is provided to negate the need for complex mechanical coupling devices.