Hands-On with the Marshall Excelsior MER473 Stay Longer Plus Kit
The Marshall Excelsior MER473 Stay Longer Plus Kit is designed to enhance the propane tank experience, offering extended run times and greater flexibility. This kit, manufactured by Marshall Excelsior, a reputable name in gas appliance control, includes key components for a more convenient and sustained propane supply. My initial encounter with this kit was driven by the perennial frustration of running out of propane mid-project or mid-meal, a scenario many outdoor enthusiasts and workshop users are all too familiar with.
The need for a solution became apparent during a particularly chilly autumn evening when my patio heater sputtered out, cutting short an enjoyable gathering. While other kits offered basic hose extensions, the promise of a more robust and integrated system, as implied by the “Stay Longer Plus” moniker, piqued my interest. My first impression upon unboxing was positive; the brass fittings felt substantial, and the hoses, while not overly thick, exuded a sense of quality. I had briefly considered a simple adapter and a longer hose from a generic brand, but the inclusion of multiple connection types and the reputation of Marshall Excelsior led me to this specific solution. The immediate feeling was one of pragmatic anticipation – the potential for fewer propane-related interruptions was a welcome prospect.
Real-World Testing: Putting Marshall Excelsior MER473 Stay Longer Plus Kit to the Test
My primary testing ground for the Marshall Excelsior MER473 Stay Longer Plus Kit was my backyard workshop and occasionally connected propane-powered tools. This involved consistent use with a propane-fired salamander heater during colder months and intermittent use with a propane weed burner. The kit was subjected to being connected and disconnected multiple times weekly, often with hands that were still greasy from workshop tasks, and occasionally left exposed to light rain and a good dose of sawdust.
Performance in these conditions proved to be quite steady. The brass tee connection and the hoses maintained their integrity, with no signs of gas leakage or degradation even after repeated exposure. Connecting the components was generally intuitive; the standard POL and inverted flare fittings are familiar to anyone who has worked with propane. The excess flow valves on the POL fittings also provided an added layer of security, which was a welcome, albeit un-tested, feature.
After several weeks of regular use, the Marshall Excelsior MER473 Stay Longer Plus Kit continued to perform reliably. The hoses remained flexible, and the brass components showed minimal signs of wear, just some minor cosmetic scuffing from being moved around the workshop. Cleaning involved a simple wipe-down of the hoses and ensuring the fittings were free of debris. Compared to some generic propane adapters I’ve used in the past, which sometimes developed slow leaks or became stiff quickly, this kit felt like a significant upgrade in durability and long-term usability. It certainly outperformed budget options in terms of build quality and the assurance of a stable gas flow.
First Use Experience
The initial setup of the Marshall Excelsior MER473 Stay Longer Plus Kit was straightforward, taking less than five minutes. I connected the brass tee to the primary propane tank, attached the 12-foot hose to the tee and then to my workshop’s main gas manifold, and used the 5-foot hose to connect a smaller tank to the other side of the tee, effectively creating a dual-source system. I tested it with my workshop’s propane heater and a portable propane grill, both of which fired up instantly with no fuss. The ease of connecting and disconnecting the hoses was particularly notable, making transitions between different propane appliances seamless.
Extended Use & Reliability
Over months of use, the kit demonstrated excellent reliability. The Marshall Excelsior MER473 Stay Longer Plus Kit became an indispensable part of my workshop setup, allowing me to run my heater for longer periods without needing to swap out tanks as frequently. The brass construction of the tee fitting, specifically the ME420 component, proved to be remarkably resilient. It handled the weight of multiple connected hoses and tanks without any signs of stress or deformation.
There have been no leaks or performance dips, even after enduring temperature fluctuations from cool mornings to warmer afternoons. The hoses, both the 5-foot and the 12-foot extension, have maintained their suppleness and have not kinked or shown any signs of cracking. Maintenance has been minimal; a quick rinse of the fittings and a wipe-down of the hoses is all that’s required to keep them in top condition. This level of durability is a significant step up from the basic propane hoses I’ve used previously, which often became brittle or developed minor leaks after a season of use.
Breaking Down the Features of Marshall Excelsior MER473 Stay Longer Plus Kit
Specifications
The Marshall Excelsior MER473 Stay Longer Plus Kit is thoughtfully assembled with components designed for robust propane management. It includes a brass tee connection (ME420) which is a key piece, featuring a .9 GPM excess flow male hard nose POL fitting, a female POL fitting, a 1″-20 male fitting, and a 1/4″ female inverted flare. This versatility allows for connection to standard propane tanks and various appliances.
Accompanying the tee are two hoses: a 5-foot hose (MER401-60) with a .9 GPM excess flow male hard nose POL on one end and a 1/4″ male inverted flare on the other, and a 12-foot hose (MER421-144) with 1″-20 male and 1″-20 female fittings. The inclusion of excess flow valves on the POL connections is a critical safety feature, automatically shutting off gas flow in case of a sudden leak or hose rupture. The brass construction of the main tee connector ensures excellent corrosion resistance and durability in various environments.
The inclusion of both POL and 1″-20 fittings is a significant advantage. The POL fitting is standard for most common propane tanks, while the 1″-20 thread is frequently found on smaller propane cylinders and various camping appliances. The 1/4″ inverted flare is also a common connection for many gas appliances, adding to the kit’s broad applicability. The convenient reusable box it comes in is a nice touch for storage and portability, and the five-year limited warranty offers peace of mind.
Performance & Functionality
In terms of core functionality, the Marshall Excelsior MER473 Stay Longer Plus Kit excels at providing a stable and extended propane supply. Its primary job is to allow users to connect multiple propane sources or extend the reach of a single source, and it does this exceptionally well. The excess flow valves function as designed, providing a noticeable click and immediate gas cutoff if the flow rate exceeds a safe limit, which is reassuring when dealing with pressurized gas.
The key strength here is the flexibility of connections. Being able to bridge between different tank sizes and appliance inputs without needing multiple adapters is a major convenience. The hoses deliver propane consistently without noticeable pressure drops, ensuring my appliances ran at full capacity. A minor area for potential improvement, though not a significant flaw, might be the hose thickness. While durable, they aren’t heavy-duty industrial grade, which is perfectly acceptable for most consumer-level applications but might be a consideration for extremely high-demand industrial settings. Overall, it meets and often exceeds expectations for its intended use cases.
Design & Ergonomics
The design of the Marshall Excelsior MER473 Stay Longer Plus Kit prioritizes both functionality and durability. The solid brass construction of the ME420 tee fitting gives it a premium feel and suggests long-term resilience against corrosion and wear. The hard nose POL fittings are robust and secure, providing a reliable connection point.
Ergonomically, the components are easy to grip and turn, even with gloved hands or slightly dirty fingers, thanks to the well-defined knurling on the fittings. The hoses are flexible enough to route easily without kinking, and their lengths (5 and 12 feet) offer a good balance between reach and manageability. The included installation instructions are clear and concise, making the setup process simple for users of varying technical expertise. The reusable storage box is a thoughtful addition, keeping all the components together and protected when not in use.
Durability & Maintenance
Based on my experience and the materials used, the Marshall Excelsior MER473 Stay Longer Plus Kit is built for longevity. The brass components are inherently resistant to rust and corrosion, making them ideal for outdoor or workshop environments. The hoses, made from what appears to be durable rubber or a similar polymer, have shown no signs of cracking or hardening, even after being subjected to temperature changes.
Maintenance is commendably low; a simple wipe-down with a damp cloth is usually sufficient to keep the kit clean. I would recommend checking the rubber seals on the fittings periodically, although I haven’t noticed any wear on them yet. Marshall Excelsior offers a five-year limited warranty, which speaks volumes about their confidence in the product’s durability. I anticipate this kit will last for many years of regular use, easily outperforming cheaper, less robust alternatives.
Accessories and Customization Options
The Marshall Excelsior MER473 Stay Longer Plus Kit comes as a complete package, with the included hoses and the central brass tee acting as its primary “accessories.” The versatility of the kit lies in its built-in connectivity options rather than add-ons. The brass tee connection (ME420) is the central hub, allowing users to connect to a primary tank via one POL fitting and then branch off to an appliance with the 1/4″ inverted flare or to another propane cylinder with the 1″-20 fittings.
While no additional tips or specialized attachments are included, the kit’s design is inherently compatible with standard propane tank valves and common appliance inlets. The 1″-20 fittings are particularly useful for connecting to smaller, portable propane canisters often used with camp stoves or portable heaters, effectively extending their runtime. The reusable storage box is a practical accessory in itself, ensuring the kit’s components are kept organized and protected when not in use.
Pros and Cons of Marshall Excelsior MER473 Stay Longer Plus Kit
Pros
- Excellent brass tee connection with multiple, versatile fittings (POL, 1″-20, 1/4″ inverted flare).
- Integrated excess flow valves on POL fittings for enhanced safety.
- Includes two high-quality hoses (5-foot and 12-foot) for extended reach and flexibility.
- Durable construction, particularly the solid brass components, promising long-term reliability.
- Comes with clear installation instructions and a convenient reusable storage box.
- Backed by a five-year limited warranty.
Cons
- Hose thickness, while adequate, might not be sufficient for extremely heavy-duty industrial applications.
- The initial cost of $135.99 might be higher than basic hose extensions, but the included features and quality justify it for many users.
Who Should Buy Marshall Excelsior MER473 Stay Longer Plus Kit?
The Marshall Excelsior MER473 Stay Longer Plus Kit is an excellent choice for anyone who frequently uses propane-powered equipment and desires greater convenience and extended runtime. This includes home workshop users needing to power heaters or tools for longer periods, campers and RV enthusiasts who want to connect larger tanks or extend the reach of their appliances, and outdoor cooks using propane grills or smokers who might benefit from a more robust gas supply setup. It’s also ideal for anyone who needs to connect to both standard large propane tanks and smaller 1″-20 threaded cylinders.
Those who should likely skip this kit are individuals looking for a single, simple hose to connect a standard tank to a single appliance with no need for complex configurations or extended runtimes. Additionally, users requiring highly specialized or extremely high-pressure gas fittings for industrial processes might need to look at more specialized, heavy-duty systems. For most common propane applications, this kit is incredibly well-suited. A complementary item that could enhance its use would be a good quality propane tank gauge to monitor fuel levels more accurately across both sources.
Conclusion on Marshall Excelsior MER473 Stay Longer Plus Kit
The Marshall Excelsior MER473 Stay Longer Plus Kit delivers on its promise of enhanced propane convenience and extended use. The combination of durable brass components, integrated safety features like excess flow valves, and versatile connection options makes it a standout product. The included hoses, in both practical lengths, further solidify its utility across a range of applications, from workshops to camping sites.
Considering the quality of materials, the thoughtful design, and the included safety features, the price of $135.99 feels justified for the value and reliability it offers. I would confidently recommend this kit to anyone looking to upgrade their propane setup and enjoy longer, uninterrupted use of their equipment. If you’re tired of running out of propane at inconvenient times and appreciate a well-built, safe, and versatile solution, this Marshall Excelsior MER473 Stay Longer Plus Kit is a smart investment.