Abstract: A natural gas filling system may include a nozzle, a container including an internal manifold, wherein the manifold may be connected to a natural gas supply line, a first line may be operably connected to the manifold, wherein natural gas may be supplied to the nozzle, and a vent, wherein the vent is a second line may be operably connected to the nozzle that may release natural gas into the atmosphere.

Abstract: A natural gas filling system may include a nozzle, a container including an internal manifold, wherein the manifold may be connected to a natural gas supply line, a first line may be operably connected to the manifold, wherein natural gas may be supplied to the nozzle, and a vent, wherein the vent is a second line may be operably connected to the nozzle that may release natural gas into the atmosphere.

Abstract: A liquid filled pressure/vacuum valve for underground storage tanks has a body having an inlet coupled to the UST and an outlet coupled to atmosphere. The valve has a suction zone disposed in the body and fluidly coupled to the inlet. The valve has a pressure zone disposed in the body and fluidly coupled to the outlet, with the suction zone in fluid communication with the pressure zone. The valve has a separator disposed in fluid communication with the outlet and the pressure zone, and a fluid that flows between the suction zone and pressure zone. The flow of fluid is determined by an increased force due to a pressure differential between the suction zone and pressure zone.

Abstract: A drop tube sealing assembly may contain a riser pipe having a proximal end with internal threads and an underground storage tank spaced apart from the proximate end of the riser pipe. The storage tank may contain a threaded inlet which is positioned atop the tank. A pipe nipple may include a first end in cooperation with the proximal end, an opposite end in cooperation with the threaded inlet, and an annular inner surface that forms a conduit. The inner surface may comprise a female thread section. A drop tube adapter fitting may be concentrically disposed within the pipe nipple. The adapter fitting may contain an outer surface containing external threads in cooperation with the female thread section. A seal in the form of an O-ring may be disposed between the adapter fitting and the pipe nipple. A drop tube having a open end may be coupled to the adapter fitting.