AP Products Propane Automatic Changeover Regulator Kit MEGR-253 — 15" Pigtail Hoses, Two-Stage UL Compliant

The Marshall Excelsior MEGR-253P-PT15 kit is a standard-capacity automatic changeover propane regulator bundled with two 15" pigtail hoses for uninterrupted LP gas supply when swapping cylinders.

This compact kit from AP Products combines the MEGR-253 two-stage automatic changeover regulator with 15-inch propane pigtail hoses to keep appliances running seamlessly as a service cylinder depletes. The regulator automatically switches vapor flow to a reserve cylinder, features a clear color indicator for cylinder status, and is built to conform with UL, RVIA, and NFPA standards. The package ships assembled in a protective plastic clamshell, ready for installation on RVs, grills, heaters, or other propane-fueled equipment.

How does the automatic changeover function work?

The MEGR-253 uses an internal mechanism that senses when the active service cylinder has reached its depletion point and redirects vapor flow to the reserve cylinder with no interruption. This two-stage design maintains consistent downstream pressure and avoids appliance shutdowns during cylinder swaps.

• Two-stage automatic changeover maintains continuous vapor supply
• Indicator turns from green to red to show when the service cylinder needs refill
• Set point: 100 PSIG inlet @ 11" W.C. outlet flowing at 30 SCFH air for reliable regulation

What comes in the MEGR-253P-PT15 kit and how is it packaged?

The kit includes one MEGR-253 standard-capacity automatic changeover regulator plus two 15-inch propane pigtail hoses suitable for standard cylinder connections. Components arrive preassembled in a plastic clamshell to protect parts during shipping and simplify unboxing and installation.

• One MEGR-253 automatic changeover regulator (standard capacity)
• Two 15" propane pigtail hoses for flexible cylinder connection
• Packaged in a plastic clamshell for protection and easy handling

Is the regulator compliant with safety and industry standards?

Yes — the MEGR-253 meets recognized safety and performance requirements for recreational vehicles and related applications. Built to comply with UL, RVIA, and NFPA criteria, the regulator helps installers and users satisfy common code and inspection expectations without guessing component suitability.

• Conforms to UL requirements for gas pressure regulators
• Meets RVIA standards for recreational vehicle propane systems
• Designed to align with applicable NFPA guidance on LP-gas equipment

How difficult is installation and what should I expect?

Installation is generally straightforward for anyone familiar with LP gas plumbing and cylinder connections, but it should follow manufacturer instructions and local codes. The pigtail hoses provide flexibility to reach cylinders, and the visible indicator simplifies commissioning and periodic checks.

• Pigtail hoses (15") allow easier routing to cylinder connections
• Visual green/red indicator aids in system checks and refill timing
• Professional installation or certified technician recommended for compliance and safety

Who is this for: The MEGR-253P-PT15 kit is suited for RV owners, mobile food operators, contractors, and homeowners who need a compact, code-compliant automatic changeover solution for propane-powered appliances. It's a practical choice when continuous gas service is important during cylinder swaps and when a simple visual indicator and industry-standard set point (100 PSIG inlet @ 11" W.C. outlet at 30 SCFH) are required. If you’re outfitting an RV, backup appliance arrangement, or any system that benefits from uninterrupted LP vapor supply, this kit delivers a ready-to-install regulator with flexible pigtail hoses in a protective clamshell package.