Suburban Mfg 523006 -- 15-Inch Propane Pigtail Hose, Type 1 ACME Nut x 1/4" MPT
A short, flexible LP connector hose built to link your propane cylinder to a two-stage regulator safely. Thermal protection, left-hand ACME threading, and UL/CGA listing mean this is a code-compliant, ready-to-install solution for RV propane systems.
The Suburban Mfg 523006 is a 15-inch propane pigtail hose engineered to connect a DOT portable propane cylinder to a two-stage regulator in RV propane systems. The Type 1 (QCC1) ACME nut on the tank end threads left-hand onto the standard POL-style or ACME valve found on most 20- to 100-pound LP cylinders. The 1/4" male pipe thread (MPT) on the regulator end provides a secure, leak-testable connection to the inlet port of a standard two-stage or dual-stage regulator.
With a 1/4" inside diameter and thermal protection built into the hose assembly, the 523006 is designed for day-to-day RV use as well as extended full-timer setups where reliability and safety compliance matter. The hose is flexible enough to route cleanly in typical propane compartments without kinking.
Left-hand QCC1 ACME nut fits standard DOT propane cylinder valves on 20- to 100-lb tanks. No adapter needed for most RV LP cylinders.
Male pipe thread outlet connects directly to the inlet of most two-stage and dual-stage propane regulators used in RV applications.
Integrated thermal protection on the hose assembly provides a safety shutoff response in the event of fire or extreme heat exposure -- a key safety feature for enclosed propane compartments.
Approved to Underwriters Laboratories and Compressed Gas Association standards. Meets code requirements for LP gas connector hoses in recreational vehicle installations.
The 523006 is the standard pigtail connector used in Suburban-equipped RV propane systems -- travel trailers, fifth wheels, motorhomes, and truck campers with dual-cylinder LP setups. It is commonly used on the primary or secondary cylinder port feeding a dual-stage automatic-changeover regulator or a fixed two-stage regulator mounted between the cylinders and the coach.
The Type 1 ACME (QCC1) fitting is the current standard for propane cylinders sold in the US and Canada. It replaced the older POL (left-hand acme plug) fitting on newer tanks. The ACME nut hand-tightens onto the cylinder valve -- no wrench required on the tank end. The 1/4" MPT outlet requires a wrench and PTFE tape or approved pipe thread sealant for a leak-free joint at the regulator inlet.
If your regulator inlet is 3/8" MPT or uses a different thread standard, an appropriate brass adapter fitting will be needed (not included).
After installation or any disconnect/reconnect, apply soapy water to all connections and open the cylinder valve slowly. Bubbles indicate a leak. Do not use an open flame to check for gas leaks. Ensure all fittings are fully hand-tight (ACME end) and wrench-tight (MPT end) before pressurizing the system.