I just installed two filters. I use two in parallel, so don't have to switch as often. They mount over a kitchen sink, so a 20" unit is hanging too far. They replaced two smaller diameter Cuno filters, so the extra tubes allowed these larger filters to be pushed further apart. As you can see, the easiest way in this situation was to install in different directions. Here's a few things to keep in mind regarding these blocks: Use pipe lube Teflon tape (I like leak blocker) to tighten the threaded fittings in these filters on the threads. . You can easily make at least 5 wraps around the threads. Then lubricate the tube and pat the female threads to insert in front of the male tube you will use for the filter. I found that the socket could be screwed all the way in for soldering the adapters I used. Except for the wrench. Why all the explanations? Because this method will never expire. Metal on plastic can sometimes be problematic. And of course don't solder near the plastic filter connection! Solder first, then screw the part in. Wrap a wet rag when you solder the next connection in the series. I keep a tube of silicone grease to use on the threads and o-ring mating surfaces when changing cartridges. DO NOT USE SILICONE SEALANTS. You're not good at removing the filter from your head. They use lubricants. Due to the construction of the filter sump (the transparent cylinder that holds the filter cartridge), the threads are internal. Therefore, when you change the cartridge and drain the water, debris and debris in the sump get into the threads. I keep a bucket of water on hand to rinse the pan out as best I can, then wipe the threads and o-ring CLEAN. Apply silicone to it again before reassembling. I believe dirt on the o-ring threads and mating surfaces is the cause of the leaks reported by such household water filters. You should have extra O-rings ready. When installing, make sure they are fully seated in a clean groove. This is a simple and durable block. The plastic is thick at the head and pan. According to the manual, it should be changed every 5 years. However, my previous blocks of the same plastic stood for 27 years. Your mileage may vary. Hope this helps and good luck with your projects!
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