Abstract: A combination valve assembly is adapted to being an interface for filling and relieving excess pressure from a closed fluid system such as a propane tank, and to enable the regulation of fluid height within the closed fluid system via a dip tube and a bleeder set screw. The system generally comprises a pin valve element, an insert shell element, a main housing element, a relief system, and a dip tube member in fluid communication with an overfill port in the main housing. The dip tube member may be adapted to extend outward of the distal end of the man housing element.

Abstract: A low-profile burst disk assembly for safely venting excess pressure from a pressurized fluid system by way of a tortuous fluid flow path. A burst disk plug includes a male thread and is thereby adapted to thread into the body of a pressurizable chamber. The burst disk plug further includes a fluid receiving port placed in fluid communication between the burst disk and one or more bleed channels open to ambient pressure. The one or more bleed channels generally run axially through the burst disk plug, either intersecting or bypassing the male thread. Embodiments with a plurality of bleed channels generally include a distribution manifold positioned in fluid communication between the fluid receiving port and the one or more bleed channels to ensure an even distribution of venting pressure among the bleed channels.