Raypak 003898F Combination Millivolt Natural Gas Valve, Price/each

It is a bit small, but being able to open it and replace the filter media makes up for it. I used it downstream from a spindown filter while filling the RV fresh water tank from a well that has a lot of sediment. The spindown filter catches the larger particles and it caught the rest. I did not have to backflush the filter. I normally have to backflush several times.

I got these to run interference between my hot tap and my dishwasher. My previous dishwasher died from scale deposit build up. Installation was as simple as connecting it between the outlet of the hot line and the inlet in the dishwasher. So far it seems to be functioning just fine and after a month of use doesn't seem to be reducing flow. I took a star off just because it was a little bit of a hassle getting it installed with 0 leaks due to the depth of the threads on the inlet side of the filter.

I use this on my horse barn hydrant because I started noticing a lot of residue on my water buckets. I was constantly having to scrub a rust colored slim off them every other day. After putting on the filter I only have to do every other week, if that. My horses are drinking better too. Really pleased with how well of a job these filters do.

We use evaporative cooler(s) on our patio and deck here in AZ to make outdoor living bearable in the summer. The main cooler will usually run about 6 to 10 hours a day, every day from about May 1 thru mid or late October, providing a cool refuge after working in the yard or field - we have several acres to maintain. Water continuously flows on the cooler's pads and evaporates, of course. Untreated or unfiltered water leaves a noticeable buildup of minerals on the cooler pads after just a few hours of use as the water here is highly mineralized (hard). Prior to installing this filter, we cleaned the main cooler, removing about 5 pounds of dry scale/minerals left over from last year. Then we fired up the system with this new filter. After about ten days of use so far, there is no visible mineral buildup on the cooler pads. I would have expected to see buildup the first day had I not used this filter. Time will tell, but so far I'm pleased. The ability to replace and/or clean the filter is a big plus. I ordered replacement filter cartridges to make that easy.

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As soon as I placed the filter on water was linking. Save your money