MSR Guardian Purifier Pump

£270.00
By MSR


Free Delivery in the UK: Available on all orders over £50.

Next-Day Delivery: Available for orders placed before 3 PM with DPD (additional charges apply).

Secure Checkout: Includes theft protection for added peace of mind.

Refunds & Exchanges: Contact us within 30 days for hassle-free returns or exchanges.


THE WORLD’S MOST ADVANCED PURIFIER FOR CLEAN WATER IN REMOTE ADVENTURES

The Guardian purifier is the ultimate solution for purifying even the most challenging water sources, offering unmatched safety and ease of use. Originally designed for military squads, it now brings cutting-edge technology to global travellers, outdoor enthusiasts, and those preparing emergency kits. Fast, efficient, and user-friendly, this pump purifier provides essential viral protection, making it ideal for travel in developing regions or remote wilderness areas.

Featuring an advanced hollow fibre filter, the Guardian purifies water from even the dirtiest sources. With its long-lasting durability and revolutionary self-cleaning system, it’s a reliable, all-in-one solution that could very well be the only water treatment device you’ll ever need.

Explore our full range of Water Filters here.

KEY FEATURES OF THE MSR GUARDIAN PURIFIER PUMP

  • Ultimate Protection: Meets NSF protocol P248, testing standard used by U.S. military, for removal of viruses, bacteria, protozoa, and sediment from “worst-case” water conditions.

  • Fast & Easy: Pumps a rapid 2.5 litres per minute, offering added viral protection without the need for chemicals, bulbs, batteries, or waiting.
  • Self-Cleaning: Pump self-cleans on every stroke, providing consistently fast flow rates with zero hassle—no backflushing or filter-scrubbing ever required.

  • Long-Lasting: Leading-edge hollow fibre cartridge treats up to 10,000+ litres.

  • Extremely Durable: Engineered to withstand heavy use, freezing, drops*, and harsh environments.

    *Withstands MSR water lab drop testing: 6 ft. to concrete.
  • size + Specifications

    Weight (Metric):
    0.49 kg
    Width (Standard):
    3 in
    Length (Standard):
    8.25 in
    Height (Standard):
    4.5 in
    Effective against bacteria:
    Yes
    Effective against chemicals/toxins:
    No
    Effective against particulate:
    Yes
    Effective against protozoa:
    Yes
    Effective against viruses:
    Yes
    Filter media:
    Advanced Hollow Fibre
    Filter pore size (microns):
    0.02
    Flow (L/min):
    2.5 litres per min
    Cartridge life:
    10,000+ liters
    Field cleanable:
    Self-Cleaning
    Field maintainable:
    Yes
    Water Bottle Adapter:
    Yes
    Cartridge replacement indicator:
    Yes

  • what we think

    Coming soon

  • reviews

    "The best filter I have ever used. Took to Nepal last spring. Used it on canoe trips. Excellent product"

    "Used it on several extended camping trips and the water quality was great."

    "Phenomenal piece of equipment for hiking. For large parties of people, it can provide clean water in suboptimal environments and in less than ideal conditions. It is heavy for short trips, but the flow rate is incredible when compared to other purifiers. For ultralight adventures, flow through filters are more ideal and better suited for weight conscious endeavours. Was used on Mt. Baker for party of 7 and it performed excellent."

  • Weight

    490 g

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Valley and Peak Promise

"The Valley and Peak promise is built on three pillars: thoughtfully curated gear, exceptional customer service, and a genuine love for the outdoors. As an independent, family-run business, we carefully select products from a wide variety of cottage gear brands and trusted names, ensuring that each item is rigorously tested and loved by our team. Our customer service is a cornerstone of our brand, offering personalised support to help you choose and care for your gear with confidence"

Jim De'Ath, Managing Director