A heavy-duty connecting hose engineered for RV dual-tank propane systems. The stainless steel overbraid resists rodent damage and abrasion, while the integrated back check valve lets you swap tanks without shutting down the active side. Fits standard Type 1 ACME POL-replacement tank valves and 1/4" inverted flare regulators used on most RV automatic changeover systems.
The MB Sturgis 100833-24-MBS is a purpose-built propane supply hose for RVs running a two-cylinder configuration with an automatic changeover regulator. At 24 inches (2 feet), it gives you enough reach and flex to connect a 20 lb or 30 lb DOT cylinder mounted in a standard RV propane compartment without pulling or kinking.
The RV Type 1 (ACME) hand-wheel connector threads onto the service valve of any modern DOT propane cylinder -- the same flat-seat, right-hand-thread fitting found on nearly every horizontal or vertical cylinder sold since the late 1990s. The regulator end uses a 1/4" male inverted flare (MIF), which mates directly to the inlet ports on most two-stage automatic changeover regulators.
What separates this hose from a basic pigtail is the built-in back check valve at the ACME connection. When the regulator switches to the reserve cylinder, the check valve on the depleted side closes automatically, preventing gas from flowing backward through the empty tank. This is a code-required feature on dual-tank installations in many jurisdictions and is essential for safe operation.
Woven stainless jacket protects the inner hose from abrasion, UV, and rodent chewing common in RV propane compartments.
Built into the Type 1 ACME fitting. Prevents reverse flow when the active tank is exhausted in dual-tank setups.
More than sufficient for a typical RV appliance load including furnace, water heater, range, and refrigerator simultaneously.
Type 1 ACME collar tightens by hand -- no wrench needed on the tank side. Regulator end requires a wrench for the 1/4" inverted flare.
Many pigtail failures in the field come from incorrect fitting selection. Here is how to confirm this hose is the right match for your system:
Rubber propane hoses in enclosed compartments are a known target for rodent damage -- mice chew through bare rubber in minutes. The stainless steel woven jacket on the 100833-24-MBS is not just cosmetic. It mechanically resists gnawing, protects against sharp edges in tight compartments, and extends service life compared to unarmored hoses. It is also resistant to the mild acids and moisture common under RV propane covers.
A typical RV dual-tank system uses two pigtails (one per cylinder) connected to a two-stage automatic changeover regulator. The regulator has a primary and secondary side. When the primary tank empties, the regulator automatically draws from the secondary, and an indicator window shows which side is active. The back check valve in each pigtail prevents the empty tank from becoming a backflow path. You need two pigtails of this type -- one per cylinder -- for a complete installation.
Propane hose assemblies should be inspected annually and replaced at least every 10 years, or sooner if any of the following are present: visible cracking, corrosion on fittings, damaged overbraid, persistent gas odor at connections, or any history of physical damage. Always leak-test with soapy water after installation -- never with an open flame. Do not overtighten the Type 1 ACME hand wheel; hand-tight plus the internal seat seal is sufficient.