In the world of caravan gas, the term “pigtail” refers specifically to the short, flexible hose that connects your gas cylinder directly to the regulator.

• High-Pressure Duty: Pigtails are rated for high-pressure LPG. They must be able to withstand the intense pressure inside the bottle, which varies depending on the outside temperature.

• Flexibility: They are designed to allow for the slight movement and vibration that occurs when a caravan is in motion.

• Connection Types: Most modern pigtails use a POL (Prest-O-Lite) fitting for the bottle end and an inverted flare or NPT thread for the regulator end. Ensure your fittings match your specific regulator port.

Not all hoses are created equal. Your choice of material significantly impacts the lifespan and safety of your gas setup:

• Rubber (Class L): The most common and affordable option. These are reinforced with textile braiding. While flexible, rubber is prone to UV degradation and “perishing” (cracking) over time, especially in hot, dry climates.

• Stainless Steel Braided: The gold standard for caravanning. These feature a rubber or thermoplastic inner core protected by a rugged stainless steel outer mesh.

  • Durability: They are virtually immune to UV damage and are much more resistant to accidental kinking.

  • Longevity: While more expensive upfront, they typically last longer and provide a much higher level of protection against road debris.

Modern pigtails are engineered safety devices. When upgrading your setup, look for these critical features:

• Excess Flow Valve (EFV): This is a small internal “check” mechanism. If a hose ruptures or a connection snaps during an accident, the EFV detects the massive surge in gas and automatically restricts the flow from the bottle.

• Non-Return Valves: In dual-bottle systems, these prevent gas from leaking out of the system when you have one bottle disconnected for refilling.

• Hand-Tightened Fittings: Many new pigtails feature large plastic “hand-wheel” connectors, allowing you to swap gas bottles safely without needing a wrench.

The 5-Year Rule: Regardless of how they look on the outside, it is a standard safety recommendation to replace rubber gas pigtails every 5 years. Over time, the internal materials can degrade, which can clog your regulator or lead to invisible micro-leaks.

• Check the Date Stamp: Every compliant gas hose has a manufacturing date printed on it. If yours is nearing its fifth birthday, it is time for a replacement.

• The “Bend Test”: Gently bend your rubber hoses. If you see tiny cracks (crazing) in the outer skin, the hose has perished and should be replaced immediately.

• Vibration Protection: Ensure your pigtails aren’t rubbing against the metal frame of your gas bottle holder. Constant vibration during travel can wear through a hose over thousands of kilometers.

Your gas pigtails are the first line of defense in your caravan’s fuel system. By investing in high-quality, braided pigtails with excess flow protection, you reduce the risk of leaks and ensure your gas system remains reliable for years to come.