초록 ▼

A riser assembly to transmit gas from a buried fluid line to a manifold. Inner (50) and outer (90) casings are received in a first end of an adapter (54). The other end of the adapter (60) is secured to the manifold. A gripping assembly (70) holds the inner casing in the adapter and prevents a pullo

A riser assembly to transmit gas from a buried fluid line to a manifold. Inner (50) and outer (90) casings are received in a first end of an adapter (54). The other end of the adapter (60) is secured to the manifold. A gripping assembly (70) holds the inner casing in the adapter and prevents a pullout while also providing a sealed inner face between the inner casing and the adapter. A mounting assembly is provided to secure the outer casing in the adapter. It, too, prevents pullout of the outer casing and also allows the outer casing to freely rotate relative to the adapter. In selected embodiments the outer casing is formed of a non-corrosive material such as a PVC or polyethelene to address corrosion resistant properties.

대표청구항 ▼

1. A riser assembly adapted to transmit gas from an associated buried fluid line to an associated manifold, the riser assembly comprising:a unitary adapter including a mounting structure at one end for connection to a manifold and having an opening at an opposite end; an inner casing having a first

1. A riser assembly adapted to transmit gas from an associated buried fluid line to an associated manifold, the riser assembly comprising:a unitary adapter including a mounting structure at one end for connection to a manifold and having an opening at an opposite end; an inner casing having a first end received through the opening in the adapter and held therein without threaded connections on the adapter; a seal member interposed between the inner casing and the adapter for sealing therebetween; a gripping assembly for holding the inner casing in the adapter; an outer casing surrounding the inner casing and having a first end received through the opening in the adapter wherein the outer casing is a plastic material that provides corrosion resistant and dielectric properties; and a mounting assembly that prevents pullout of the outer casing from the adapter and allows the inner and outer casings to freely rotate relative to the adapter.