A purpose-built LP gas hose for RV propane systems where flexibility and a secure swivel connection matter. The Marshall Excelsior MER613-24 delivers 24 inches of UL- and CGA-listed thermoplastic hose between two fully crimped 3/8" female flare swivel fittings -- rated to 350 PSI working pressure and tested to a 400 lb pull rating. Backed by a limited 5-year manufacturer warranty and assembled in the USA.
Whether you are connecting a regulator to a distribution manifold, extending a propane line to an appliance, or replacing a stiff or corroded factory hose, the MER613-24 is sized and rated for the job. The 3/8" female flare swivel fitting on each end allows you to make final connections without twisting the hose body -- a real advantage in tight propane compartments where alignment is never perfect.
The flexible thermoplastic construction resists kinking and handles the vibration and movement that full-time RV use demands. Fully crimped brass ferrules at both ends create a permanent, leak-resistant seal between the hose and the fitting -- no clamps to check, no compression sleeves to over-tighten.
Rated for 350 PSI, well above the low-pressure propane ranges used in RV distribution systems, giving meaningful safety headroom.
3/8" female flare swivel on each end lets you tighten connections without spinning the hose -- prevents kinking during installation.
Approved by Underwriters Laboratories and the Compressed Gas Association for LP gas service -- meets the compliance requirements most RV parks and inspections require.
Factory-applied thermal protection sleeve guards the hose body against radiant heat sources common in propane compartments and engine bays.
Both ends use a standard 3/8" SAE 45-degree female flare swivel fitting -- the most common thread standard in RV and residential LP gas systems. This mates directly with 3/8" male flare fittings found on regulators, POL adapters, quick-disconnect bodies, and appliance inlets. No adapters are needed for standard propane system connections.
The hose body is a flexible thermoplastic compound formulated for LP gas (liquid and vapor phase). It resists the hydrocarbons, UV exposure, and ozone degradation that degrade lesser hose materials over time. Fully crimped brass ferrules -- not field-assembled clamp ferrules -- permanently lock the hose to each swivel fitting.
The 24-inch length is one of the most versatile sizes for inside-compartment propane routing. Typical applications include: