MSR AutoFlow XL Gravity Filter Review

Let’s Talk About MSR AutoFlow XL Gravity Filter

Water is life, a sentiment I’ve embraced over a decade spent navigating demanding outdoor and tactical scenarios. Dehydration isn’t just discomfort; it’s a mission-ender, a threat to survival. The MSR AutoFlow XL Gravity Filter promises a swift and reliable solution for obtaining clean water, boasting a 10-liter capacity and a flow rate of 1.75 liters per minute.

My search for a gravity filter stemmed from increasingly frequent group expeditions where individual filtration methods proved inefficient and time-consuming. The need for a high-capacity, easy-to-use system became paramount, especially for basecamps and scenarios where time is of the essence. The MSR AutoFlow XL Gravity Filter stood out due to its large capacity and reputation for durability.

Upon unboxing, the MSR AutoFlow XL Gravity Filter impressed me with its robust construction. The 1000-denier flat base and RF-welded seams exuded durability. The system felt lightweight and packable, a significant consideration when every ounce counts in the backcountry.

Compared to other gravity filters like the Platypus GravityWorks 4.0L and the Sawyer Squeeze (with gravity bag), the MSR AutoFlow XL Gravity Filter offers a compelling combination of high capacity and flow rate. While the Platypus is lighter, its smaller capacity necessitates more frequent refills. The Sawyer Squeeze, though versatile, lacks the hands-free convenience of a dedicated gravity system for group use. My initial excitement centered on the potential for simplified water management during extended group trips, eliminating the need for multiple individual filters and streamlining the process of obtaining potable water.

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Real-World Testing: Putting MSR AutoFlow XL Gravity Filter to the Test

First Use Experience

My first deployment of the MSR AutoFlow XL Gravity Filter was during a week-long scout troop camping trip in the high Sierra Nevada. The abundant streams provided ample testing opportunities. Setting up the system was straightforward, aided by the separate hang strap and bag clip.

The MSR AutoFlow XL Gravity Filter performed admirably in the mixed conditions of the Sierra, from sunny afternoons to chilly, damp evenings. The gravity-fed system consistently delivered a clean water flow of about 1.5 liters per minute. A slight reduction from the manufacturer’s claimed 1.75 liters, but still impressive considering the sediment present in the water source.

The ease of use was a significant advantage. Simply filling the reservoir, hanging it from a tree branch, and letting gravity do its work proved far more efficient than individual pump filters. There were no surprises during the first use; it worked exactly as advertised, providing a steady supply of clean water for the entire group.

Extended Use & Reliability

After several months of regular use on backpacking trips and survival training exercises, the MSR AutoFlow XL Gravity Filter has proven to be a reliable workhorse. The reservoir shows no signs of wear and tear, and the RF-welded seams remain intact. Despite being subjected to rough handling and abrasive surfaces.

Maintaining the MSR AutoFlow XL Gravity Filter is remarkably simple. The sediment trap effectively collects debris, and the filter can be easily cleaned in the field without tools. Regular backflushing has maintained a consistent flow rate.

The MSR AutoFlow XL Gravity Filter has consistently outperformed my previous experiences with smaller-capacity gravity filters and hand-pump models. Its combination of high capacity, ease of use, and robust construction sets it apart. The ability to provide clean water quickly and reliably for a group is invaluable in demanding outdoor environments.

Breaking Down the Features of MSR AutoFlow XL Gravity Filter

Specifications

• The MSR AutoFlow XL Gravity Filter boasts a 10-liter capacity, making it ideal for groups or extended trips. This generous volume significantly reduces the need for frequent refills, saving time and energy.
• Weighing in at just 12 oz (340 g), the system is impressively lightweight for its capacity. This minimizes the impact on pack weight, crucial for backpacking and other weight-sensitive activities.
• The hollow fiber filter is effective against bacteria (99.9999%), protozoa (99.9%), and particulate. Meeting EPA and NSF Protocol P231 standards provides confidence in the quality of the filtered water.
• The stated flow rate is 1.75 liters per minute. This speed allows for quick filtration, minimizing wait times and enabling users to focus on other tasks.
• The filter cartridge life is rated for 1500 liters. This extended lifespan ensures long-term value and reduces the need for frequent replacements.
• Featuring a 1000-denier flat base and RF-welded seams, the reservoir is built to withstand demanding conditions. This rugged construction ensures long-term durability and resists wear and tear.
• Field maintenance is simplified with a sediment trap and tool-free filter cleaning. This allows users to easily maintain the system in the backcountry, ensuring optimal performance.

Performance & Functionality

The MSR AutoFlow XL Gravity Filter excels at its primary function: providing clean, safe drinking water. The fast flow rate allows for quick filtration. Its large capacity minimizes the need for repeated refills, especially when catering for groups.

The system’s strengths lie in its ease of use, high capacity, and robust construction. Its main weakness, and this is being highly critical, is perhaps its size when packing it away (although it packs down very well).

The MSR AutoFlow XL Gravity Filter meets and exceeds expectations for a gravity-fed water filtration system. Its performance, reliability, and convenience make it an invaluable asset for any outdoor enthusiast.

Design & Ergonomics

The MSR AutoFlow XL Gravity Filter features a well-thought-out design. Its durability is boosted with quality materials and is evident in the 1000-denier flat base and RF-welded seams. The system is relatively lightweight, which is important for extended trips, and is easy to pack.

The system is user-friendly, with a simple setup and operation process that minimizes any learning curve. The hang strap and bag clip allow for versatile and convenient placement.

Durability & Maintenance

The rugged construction of the MSR AutoFlow XL Gravity Filter suggests it will last for many years with proper care. The quality materials and robust design ensure it can withstand the rigors of outdoor use.

Maintenance is straightforward, with a sediment trap and tool-free filter cleaning process that allows for easy upkeep in the field. Regular backflushing is recommended to maintain optimal flow rates.

Accessories and Customization Options

The MSR AutoFlow XL Gravity Filter comes with a hang strap and bag clip for convenient setup. There are no specific customization options available for the system itself.

The filter cartridge is replaceable, ensuring continued use of the system. As for compatibility with other brands, you may be able to rig up other accessories like different hoses, however the system is well-designed as is and unlikely to need this.

Pros and Cons of MSR AutoFlow XL Gravity Filter

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Who Should Buy MSR AutoFlow XL Gravity Filter?

The MSR AutoFlow XL Gravity Filter is perfect for:

• Backpackers and campers venturing on multi-day trips, who value a reliable water source.
• Scout troops and other large groups who need a centralized water filtration system.
• Survivalists and preppers seeking a dependable water purification solution for emergency situations.
• Horsepackers who need a large-capacity water filter for themselves and their animals.

This product might not be ideal for solo backpackers or those primarily engaging in day hikes, who may find the system’s capacity excessive. Additionally, if you only ever plan on collecting water from pristine sources, then this system may be overkill for your needs.

There are no must-have accessories. But carrying a spare filter cartridge is a wise precaution for extended trips or in areas with particularly poor water quality.

Conclusion on MSR AutoFlow XL Gravity Filter

The MSR AutoFlow XL Gravity Filter is a top-tier water filtration system that delivers on its promises. It provides clean, safe drinking water quickly and reliably in a variety of outdoor settings.

At $129.95, the price is justified by the system’s high capacity, fast flow rate, durable construction, and ease of use. The MSR AutoFlow XL Gravity Filter is a worthwhile investment.

I wholeheartedly recommend the MSR AutoFlow XL Gravity Filter to anyone seeking a dependable water filtration solution for group outings or extended backcountry adventures. Invest in your health and safety, and experience the peace of mind that comes with having access to clean water, no matter where your adventures take you!