GravityWorks Push-Pull Cap Adapter Review: Easy Water Flow

When you're miles from the trailhead and need to refill your bottles, the last thing you want is a complicated water filtration setup. The MSR GravityWorks Push-Pull Cap Adapter aims to simplify that process, promising easy water flow with just a push and pull. We put it to the test on a recent backpacking trip to see if it lives up to the hype.

This small but mighty accessory is designed to work with MSR's gravity filtration systems, allowing you to fill your reservoir or bottle without removing the cap. It's a simple concept, but does it hold up in the field? In this review, we'll cover its design, performance, and whether it's worth adding to your gear list.

Design and Compatibility

The GravityWorks Push-Pull Cap Adapter is a lightweight plastic piece that replaces the standard cap on your dirty water bag. It features a push-pull valve that opens and closes the flow of water, so you can control when water passes through the filter. The adapter is designed to fit MSR's GravityWorks and AutoFlow systems, making it a versatile addition to your existing setup.

We tested the adapter with the GravityWorks system and found it incredibly easy to install. Simply remove the original cap and screw on the adapter. The push-pull mechanism is intuitive: pull to open, push to close. This allows you to fill your clean water reservoir without having to unscrew the cap every time, which is a huge time-saver.

• Compatible with MSR GravityWorks and AutoFlow systems
• Lightweight and durable plastic construction
• Push-pull valve for quick on/off control

Performance in the Field

During our test, we used the adapter to fill our water bottles from a stream. The push-pull mechanism worked flawlessly, allowing us to control the flow with one hand. The adapter also prevented any splashing or spillage, which is a common issue when trying to fill narrow-mouth bottles.

One of the standout features is the ability to use it with the GravityWorksTM / AutoFlowTM Clamp to create a hands-free setup. By clamping the dirty water bag to a tree and letting gravity do the work, we could fill multiple bottles without any effort. This is especially useful when you're filtering water for a group.

Pros and Cons

After several days of use, we've compiled a list of pros and cons to help you decide if this adapter is right for your adventures.

Overall, the adapter is a well-thought-out accessory that enhances the usability of your gravity filter. It's not essential, but it certainly makes life easier on the trail.

• Pros: Easy to install, intuitive push-pull design, saves time, reduces spills, works with multiple MSR systems
• Cons: Only compatible with MSR systems, so if you use a different brand, it won't work

How It Compares to Other Accessories

If you're looking to upgrade your water filtration setup, you might also consider other MSR accessories. For example, the HoserTM Reservoir is a great companion for carrying clean water, and it pairs well with the adapter. The reservoir's bite valve makes it easy to drink on the go, and the adapter allows you to fill it without removing the cap.

Another useful accessory is the Bite Valve Cover, which keeps your drinking tube clean when not in use. While not directly related to the adapter, it's a small investment that can extend the life of your hydration system.

Should You Buy It?

If you already own an MSR gravity system, the GravityWorks Push-Pull Cap Adapter is a no-brainer. It's affordable, easy to use, and makes water filtration more efficient. For those who frequently filter water for multiple people, it's especially valuable.

Even if you're a solo hiker, the convenience of not having to unscrew the cap every time is worth it. The adapter is a small addition to your pack, but it can make a big difference in your camp routine.

The MSR GravityWorks Push-Pull Cap Adapter is a simple but effective upgrade for any gravity filtration system. Its intuitive design and compatibility with MSR products make it a must-have for backpackers and campers. To see it in action and add it to your gear, check out the GravityWorksTM / AutoFlowTM Clamp and other accessories at Therm-a-Rest®.