4 inch Thermostatic RV Shower Faucet Valve

(Read to the bottom, as I've revised the review with instructions on how to clean the valve) I just installed this valve in my Winnebago Fuse motor home. The installation was fairly easy, but keeping everything lined up with the offset nipples, as the connections are tightened took a couple tries. Otherwise, no issues. Once the temperature is set (I just used the default 100 deg F setting) it regulates well. Shutting off the shower head and then turning it back on, only the water in the hose cooled down, then it comes out at the setpoint temperature. It's so much easier and more conservative on water use than trying to re-adjust the two knobs on the previous valve set. However.... So after using it on a short trip, the RV sat for two weeks. When we tried using it, very hot water came out, and the valve had to be set to full cold to get a reasonable, but still very hot, temperature. I noticed that the temperature knob felt far stiffer than previously, so maybe the hard water had reacted with the grease in the valve. I've never seen that happen with silicone grease when used on my own plumbing work. Anyhow, the instructions said something about cleaning the internal parts, so I proceeded to remove the handle and the cartridge. It is held in with a set screw on the bottom of the valve. Once out, there is no way to further disassemble the valve and clean or re-lube it.There was no trace of debris on the screens or in the valve housing. I ran water backwards through the cartridge, and rotated the temperature knob back and forth while flushing. Reassembling it into the housing with silicone grease on the o-rings went fairly well. There are a number of small spacer washers and the temp knob stop piece to get back into the correct spots and properly aligned. I tested it and it still runs extremely hot in the 100 deg F position and only at full cold does the temperature get to a reasonable temperature. I'm going to try to contact the vendor about this, and in the meantime, order another valve. I would REALLY like to get it working again, and hopefully it will stay working. Update, I looked online for posts and videos about thermostatic valves. It turns out that the parts are closely fitted, and scale can prevent the proper regulation of temperature. Ignore the instructions that come with the valve as far as removal of the cartridge, as you'll end up dissembling things you don't need to. Here's how to fix the problem I had: Make sure the water is OFF, open the left handle and any shutoffs on the showerhead to relieve the pressure. Use a 3mm hex key wrench (allen wrench) and find the small opening on the bottom of the right end of the valve. Insert the wrench and carefully remove the setscrew. Wiggle and pull gently, and the cartridge will come out along with the handle. Rinse the cartridge and then place it, handle end up into a descaler solution. I used "Eliminate" as it is non-acidic and won't damage the metal parts. Hold the body and turn the knob back and forth several times while it soaks. I let it soak overnight, then rinsed the valve. Next soak in distilled water for a few minutes to remove any mineral traces from the previous rinse. Hold the valve at both ends and shake it end to end. If you can hear a light clicking sound, then you have freed up the internals. Once it is dry, it should still click when shaken end to end. Now lightly coat the o-rings with some silicone grease, push it back into the valve body, being careful to line up the setscrew with the hole. Push a bit and it should pop back in. Re-install the setscrew,but just snug it. The valve should work again. I keep the cartridge from the second valve in my RV as a backup. When the valve works properly it is GREAT! I wish the vendor had accurate instructions on how to disassemble and properly clean the valve. I did put it back to five stars.

This faucet eliminates the challenges of adjusting water temp when taking a "navy shower" to conserve water. It keeps water temp consistent (once hot water has reached the faucet of course) and comfortable. Have had one of these in service for a couple years trouble free. Product is well made, all metal, with a decent quality stainless exterior. It water spots but wipes up to shiny easily. Installation was as expected of any faucet, but note you must be able to access supply lines behind the shower stall. This faucet reduced water use per shower because we no longer need to adjust temp each time water is turned off. Highly recommended for RV or boat.

I love this shower faucet. Of all the upgrades to my RV this one may be the best. The auto temperature is a huge feature and a game changer in the shower. Now I can turn the water off to conserve during a shower and when I turn it back on there is no temperature change. With the shower head water valves I would always get a blast of hot or cold water when turning them off and on. In addition, now if someone uses the kitchen sink while I'm in the shower, the auto temperature adjust totally saves the day. Even with the water pressure dropping it still maintains the same temperature. This would be one of the first upgrades if we ever got a different RV.

Manufacturer, I will change this review to 5 stars if you can answer in detail HOW to winterize this thing with confidence. Note that it works ==FABULOUSLY==. But then I ran antifreeze through it, the cold night came, took a trip a couple weeks later and it no longer worked. So what is the DETAILED METHOD to winterize, please. Note that to winterize, I thought to myself, "it's already at a middle temperature setting on the right, so I simply opened the flow volume on the left until I saw pink shower water." ==However==, on our text trip, it would only flow hot water. With the left side flow volume control set to max... When I turned the temperature control to full cold, zero water came out. When I turned the temperature control to full hot, lots of water came out. In fact, as I turned the temperature control further to hot, more and more water came out. Evidently, the recent freezing weather somehow broke the cold side so that no cold water would ever flow, only hot water. It a tough couple days on the RV trip, until a new one showed up at an Amazon locker. (Locker experience was great. Took 3 seconds to pick up. Well, maybe 5 seconds.) Hey, manufacturer, a credit for buying the second one would be greatly appreciated. So I wonder if, at the middle temperature position, and with cold antifreeze in the hot water lines, the mixer thermostat was acting like, "hey, they asked me for luke warm water. My output is still cold, so I'm going to mix in more hot. " Because the hot pipe had cold antifreeze in it, the mixer actually selected 100% hot water while trying to reach that luke warm temperature that it could in fact never reach because there was no hot antifreeze. ==Therefore==, even though the temperature was set half way between hot and cold, the mixer never actually flowed any cold water. Therefore there was just plain water in the cold channels/pathways, not antifreeze. When the freeze came along, this water in the cold channels/pathways froze. I would have thought that this would end up making full cold and adjusted hot come out of the half-broken mixer. But instead, it was zero cold and adjusted hot. Whatever. I just wonder if this simple method of flushing -- leaving the temperature setting in the middle -- is insufficient for this thermostatic valve/mixer. ==THIS== time when I once again winterized with the ==second== valve, I set the temperature to full cold and ran volume until I saw pink. Then I set the temperature to full hot and ran volume again until I saw pink. I did see clear water for a moment between, but that could have simply been from the hot pipe stub going from elsewhere to only the shower. So this strategy may or may not have actually gotten antifreeze through ALL the channels/pathways in the valve/mixer. ==THEREFORE== manufacturer, do you have a known and specific way to winterize this thing safely? Or is the design public and you might point me to the mechanical design so that I can try and figure out a safe method. Not having a safe method already, I subsequently ==REMOVED== the valve/mixer from my RV, intending to put it back before my next trip. In the mean time, I have two open holes in my shower. This spring, when I add water pressure to flush out the antifreeze, I better remember to put the valve/mixer back on first. If I forget, then the very hard rush of water out of those pipes may go outside the shower door and make a real mess. To avoid this problem, I would ==LIKE== to cap off these two pipes while the valve/mixer is absent. I want to do this ==AFTER== the offset adapters, on the close-to-3/4" end. I don't want to do it before the offset adapters because that requires more effort to remove, re-assemble, and re-caulk. By removing after the offset adapters, it's a trivial remove-and-replace. ==UNFORTUNATELY== the close-to-3/4" end of the offset adapters is ==NOT IN FACT US STANDARD 3/4"==. It's something else. It might be metric, but I don't think so. I suspect it might be a chinese standard. That's fine, but I couldn't find a webpage giving a simple answer. There seemed to be many possible answers. So I ask the manufacture, what exactly is this thread? Knowing the thread, I can then look for a couple of caps. I can then use the rubber washers and caps to make things water safe to avoid the big mess accident. Alternatively, I guess, a proper and certain winterizing method would help. Thanks!!! Bottom line, I recommend this valve/mixer. It works great. Just do ==NOT== think you can easily winterize it until we find a good answer here or from the manufacturer.

I got this to replace the factory shower faucet in our 2022 Winnebago Sunstar. The cheap factory faucet is made of plastic and worked OK but getting the water to a comfortable temperature took a lot of time playing with the hot and cold knobs to get the correct mix. This faucet solves that problem. Out of the box it is extremely well made and is all metal and because of this is fairly heavy. That is the only drawback I can see for an RV install as we are always looking to save weight. Instructions were basic but clear and easy to follow. Overall it took about 15 to 20 minutes to do the install and that was taking my time. The only concern I had during install was I was a bit worried the water pipes could fall back into the wall making it difficult to get them back out but it turns out they were stiff enough that they stayed in place once I removed the original faucet. Once I had everything connected I ran the water for a few minutes to check for leaks and everything was water tight so I closed everything up and was good to go. We just got back from our first RV trip with the new faucet and it worked great. One knob adjust water pressure and the other know adjusts temperature. There is a stop preset in the temperature knob that gives you a 100 degree F water flow. That was a little cool for me so I go just beyond the stop point. The stop point can be adjusted and I may do that later but did not find it an issue as it is out of the box. In use we just leave the temperature knob at out favorite setting and all you have to do is turn on the water and wait a few seconds for the cold water in the line to clear and you have a shower at your perfect temperature. Much faster and uses much less water getting the shower comfortable. For the price this is well made, works well, easy to install and does what is says it will do. I wish I had done this years ago! Would definitely but again.

This combiner faucet really solves one of the biggest issues with most original cheap RV shower faucets, setting temperature with separate controllers and losing valuable water the entire time. I recommend it. However, because it is built well, it weighs more than double what it replaces and should be installed safely on a rigid escutcheon of some kind to prevent it from damaging your shower wall while traveling down the bumpy roads RV folk love to take. I wish it came with an escutcheon plate for mounting over the thin shower wall. I purchased one separately that worked, but you might have to fabricate one like a friend did out of a small plastic cutting board (great idea). Once installed, it is easy to set your desired temperature once and never have to adjust that again. It has an override feature on the temperature control to raise the temperature above a default position when needed on chilly days. Oh yea, and it looks great, making your RV more of home each time you enjoy.

Wow. Got this to replace an old marine shower (RV style). It showed up well packaged. It’s a heavy bronze casting with a high quality chrome. It looks very nice, fits the existing hole pattern perfectly. Having used it on our first trip, I can say the thermostat keeps a perfectly consistent temp. For years when you hear the water pump cycle on/off and there are small pressure changes, the water temp would change just a bit. Not anymore. Just a constant temp, and no brief flashes of cold/hot like before. The quality of this unit is just super evident. Regardless of price. But when ai think of the level of quality in comparison to a price well under $100, thus is just super impressive. One issue. Many marine/rv showers are in a compact space. My old unit had threads not just on the outside of the hookup tailpieces, but was also threaded on the inside. This allowed for a 90 degree fitting to directly change the hookup direction downward in a compact way. Since the tailpieces are straight thread, you won’t walk into your local hardware store and find an easy fitting. I ordered a 90 with gasketed swivel straight thread to a sharkbite style tube on the other end. Just know you will need to order those fittings if you can’t go straight to a hose style connector due to issues in not having enough room.

Easy to install. Easy to set up. Works great for reducing water usage with preset temperature.

Perfect upgrade for RV

great product, bolt on no modification required because fit with 4 inches spacing water pipes found in RVs. Water temperature stable, help with water saving and avoid fill the gray tank too fast, specially great with kids. Work pefectly on city water supply pressure and on RV pump. Note that I have a water pressure tank installed in my RV, so I recommend this add on if you intend to use a thermostatic faucet to make sure pressure is stable. Also had issue with duty fees that was not supposed, but the seller fix that issue immediately. Recommended product

Easy to install. Although less easy was modifying a metal plate to eliminate the plastic pieces in the shower walls. Huge upgrade compared to the original hardware in the rv. I like that the temperature control is separate from the flow control. This allows you to set the ideal temperature and never have to touch again (it can be hot to touch depending on your water temp).

Failed within the warranty. Not sure if I can replace the thermostatic cartridge

High Quality Excellent control of the water temperature