A 15-inch ACME-nut hose with a type-1 back-check valve, designed to prevent propane loss if the line pulls loose during vibration or travel. The ACME nut threads securely onto cylinder outlets, while a 1/4-inch male inverted-flare end fits regulator or appliance inlets. Thermal insulation and UL/CGA approval keep your RV compliant and safe.

• 15 inches long, 1/4-inch diameter
• ACME nut to 1/4-inch male inverted flare
• Type 1 back-check valve for safety
• Thermal protection and UL/CGA approved