When your RV runs a dual-cylinder LP setup and appliance demand starts triggering regulator bypass, a POL pigtail is the right fix. This MB Sturgis pigtail connects directly to the tank valve using a POL (Prest-O-Lite) left-hand thread fitting -- which flows significantly more gas than a Type 1 (QCC) connection -- and terminates at a 1/4 in. male inverted flare for attachment to your two-stage regulator inlet. Built to handle up to 500,000 BTU per hour and 350 PSI, it meets the demand of high-draw RV appliances including furnaces, cooktops, water heaters, and refrigerators running simultaneously.
Type 1 (QCC) fittings are common on modern propane tanks, but their built-in excess flow valves can restrict gas delivery when multiple high-demand appliances run at once. The POL connection on this MB Sturgis pigtail bypasses that limitation, delivering a full 500,000 BTU/hr of capacity to keep your two-stage regulator supplied under load.
The 1/4 in. male inverted flare outlet connects to the matching female inverted flare inlet found on most dual-stage RV LP regulators. At 48 inches, the hose gives enough reach to comfortably span from a standard ASME or DOT cylinder to a remotely mounted regulator without stressing the fittings.
Left-hand threaded POL fitting seats directly on the tank valve and includes an integral excess flow device for added safety at the cylinder.
Substantially higher flow potential than Type 1 QCC connections -- critical for dual-cylinder systems feeding multiple appliances simultaneously.
1/4 in. ID thermoplastic hose resists weathering and remains flexible across the full rated temperature range of -40 F to 140 F.
Meets the industry certifications required for LP gas hose assemblies used in RV and portable appliance applications.
If your RV experiences nuisance regulator bypass -- where the second-stage regulator briefly locks out as if the cylinder is empty, even with a full tank -- the root cause is often inadequate upstream flow. The Type 1 QCC excess flow valve inside the tank fitting can trip during peak demand. Switching to a POL connection eliminates that restriction and allows the full cylinder pressure to reach the two-stage regulator unimpeded.
POL pigtails are also the traditional standard for ASME (permanently mounted) tanks and older DOT cylinders that predate the QCC standard. If your rig or tow vehicle uses a fixed ASME tank, this is the correct fitting.
The thermoplastic hose body is rated from -40 F to 140 F, covering everything from winter camping in cold climates to storage in sun-baked compartments in the Southwest. The hose ID of 1/4 in. is sized to support the full rated flow at normal cylinder pressures without a significant pressure drop across the hose length.
MB Sturgis backs this hose assembly with a limited 1-year manufacturer warranty against defects in materials and workmanship.