Also intriguing is that the filter doesn't get back washed, and instead has a discharge tube that cleans it just by running water through it in the normal direction. Here's a line to the filter alone.
Johnny 5. Joined Oct 11, Messages Reaction score I realize that this is an old thread but I put together a gravity water filter system using a virus filter. I evaluate equipment before taking it into the field and felt that the flow rate was too slow in comparison to the other non-virus filters. I tested flow rates with and without a 3 foot leader hose attached to the dirty water bag. JPG Johnny 5 said:. Click to expand Not sure I want to paddle anywhere I would need that filter.
Boiling is so much easier! You must log in or register to reply here. They may be used in manufacturing and construction, or be the byproducts of chemical processes. Proposition 65 requires that the Governor of California maintain and publish a list of these harmful chemicals, and update it annually.
A chemical is listed if it has been classified as a reproductive toxicant or carcinogen by an "authoritative" organization on the subject. The U. Environmental Protection Agency, U. For reproductive toxicants, appropriate authorities include the U. Chemicals will also be listed if they are required to be labeled or identified as a carcinogen or as a reproductive toxicant by an agency of the state or federal government.
The Guardian Gravity Purifier features a purge hose and valve to self-clean the system, no backflushing required. Open the purge valve to flush dirt and air until the water color matches the source water and is free of bubbles. This helps increase the flow rate, because air trapped in the purifier cartridge can reduce water flow. Hold the cartridge horizontally or gently tap the cartridge as water flows to help release the air.
Please note, the purge valve releases highly concentrated dirty water from the purifier. Do not allow any drops from the purge hose to splash into your clean water. The higher the dirty reservoir bag is above the clean water output, the better the flow rate will be. To increase the flow rate, first try hanging the reservoir bag as high as you can above the clean water output. Second, make sure to purge air out of the system following the directions included with the filter or purifier also found in the Videos section.
If your MSR gear is in need of repair, our technicians will work to find you a solution as quickly as possible. A majority of the time, MSR products can be repaired. Please contact our team to get started. Popular Searches. Availability: In Stock. Add to Cart Notify me. Nothing is safer or easier to use for purifying the most demanding backcountry water sources than the Guardian purifier.
Originally designed for military squads, it brings this highly advanced technology to global travelers, backcountry users, and those stocking emergency kits. Fast and easy to use, this pump purifier offers the added viral protection you need when traveling in developing nations and popular wilderness areas. Its advanced hollow fiber filter offers the most reliable way to purify even filthy water conditions. Self-Cleaning: Pump self-cleans on every stroke, providing consistently fast flow rates with zero hassle—no backflushing or filter-scrubbing ever required.
Tech Specs. SKU: Weight Standard : 1 lbs 1 oz. Weight Metric : 0. Width Standard : 3 in. Length Standard : 8. Height Standard : 4. Effective against bacteria: Yes. Effective against particulate: Yes. Effective against protozoa: Yes. Effective against viruses: Yes. Filter media: Advanced Hollow Fiber. Filter pore size microns : 0. Field cleanable: Self-Cleaning. Field maintainable: Yes.
Water Bottle Adapter: Yes. Cartridge replacement indicator: Yes. Material s : Hollow Fiber. Country of Origin: Made in the U. FAQs and Documents.
Why do I need a filter or purifier? All surface waters have the potential to be contaminated with at least one of the three types of disease-causing microorganisms: protozoa , bacteria , and viruses.
While it is true that you can drink directly from many water sources, it is critical to understand that each time you do, there is a chance of ingesting one of these bugs. Infection symptoms can range from an upset stomach to debilitating illness and, depending on where you are, can mean anything from a simple inconvenience to a life-threatening situation. Since microorganisms are impossible to see, taking the proper precautions with any water can help to ensure a safe trip.
How is a filter different from a purifier? What is the scoop on protozoan parasites? Protozoa are the largest of the waterborne bugs measuring in the one-micron range. Giardia and cryptosporidia are the most infamous of the group. Backcountry-grade microfilters are designed to remove contaminants down to 0.
Learn about these testing standards here. Chemical tablets make a great back-up purifier to any microfilter, rendering the water safe to drink by eliminating any potential viruses. Physical purifiers are designed to physically remove contaminants down to 0. As our local backcountries see a rise in traffic, and the risk of viruses increases with it, purifiers may become the more popular tools of choice.
Here are a few scenarios that you might find yourself in while adventuring and the type of treatment device we recommend.
Any pathogenic risks in the water will come from humans and animals, but are usually light in concentration. Here, bacteria and protozoa are the primary threats; the likelihood of encountering viruses is very low.
The water may also contain particulates like dirt or sediment, which will need to be removed. Treatment choice: A microfilter is typically recommended, but you might bring a purifying agent as a backup if you suspect viruses could contaminate the water.
The higher concentration of humans leads to a higher risk of viruses. Treatment choice: A physical pump purifier, or microfilter plus purifying agent. Potential pathogens will come from humans and animals, carried to your faucet through a suspect water treatment system.
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