The MB Sturgis 100473-20-MBS is a 20-inch flexible pigtail hose designed to connect an LP gas tank to a pressure regulator with a 1/4" FNPT inlet. Built with an internal backcheck valve and a heat-sensitive shutoff, it delivers high flow capacity and critical safety features in a compact, durable package -- ideal for travel trailers and RVs with tanks on opposite sides of the hitch.
Standard rigid connections between LP tanks and regulators can bind, crack, or leak under road vibration. This 20-inch flexible pigtail provides the flex needed to absorb movement while maintaining a secure, leak-resistant seal. The 1/4" male pipe thread (MPT) outlet mates directly with any regulator or manifold fitting that accepts a standard 1/4" FNPT connection -- no adapters needed in most applications.
MB Sturgis engineered two key safety mechanisms into this hose. The internal backcheck prevents LP gas from flowing backward out of the line if the connection is broken or the tank is disconnected under pressure. The heat-sensitive shutoff automatically stops gas flow if the hose is exposed to dangerous temperatures -- an important layer of protection in the event of a nearby fire or extreme heat source.
Rated at 200,000 BTU per hour, this Type 1 hose handles the full demand of most RV propane systems without flow restriction or nuisance shutdowns at low tank levels.
Prevents LP gas from leaking back through the hose if the connection is broken or the tank valve is opened before the fitting is fully seated.
Automatically closes off gas flow when exposed to high temperatures, reducing risk in fire-adjacent situations or accidental heat exposure near the tank compartment.
The 20-inch length provides the reach needed when tanks are mounted on opposite sides of the A-frame, a common layout on travel trailers and fifth wheels.
This hose is a direct-use pigtail connecting a Type 1 (POL or ACME-threaded) LP tank to a regulator with a 1/4" FNPT female inlet. It is commonly used in two-stage and single-stage RV regulator setups where the regulator mounts near the tank compartment. Compatible applications include:
The outlet end of this pigtail is a 1/4" MPT (Male Pipe Thread) fitting. This mates with a 1/4" FNPT (Female National Pipe Thread) inlet on the regulator. The tank end uses a standard Type 1 connection compatible with DOT and ASME LP cylinders used on most RVs. Always verify your regulator's inlet thread size before ordering -- some regulators use a 3/8" FNPT inlet and require a different pigtail.