Hex I know they make other pressure regulators I was referring to the statement. "standard hosehold pressures of 7psi-40psi " Our RO system works at 60 psi. I have no idea what the tanks are rated at, but I'm sure that government safety regulations would require it to be well above the max possible pressure when a water pressure regulator fails (depending on variables they only last 3-7 years). I know our city water pressure can reach over 100 psi. so I would guess to satisfy regulations those RO tanks would need to be able to withstand at least 150 psi. Remember to leave enough initial air space to match the flowrate or the pressure will drop out during the first misting. Absolutely, that's one of the reasons I was asking how much water your systems went through per day. Although the air pressure can easily be kept above a certain minimum psi automatically. If set at say 100 psi, as soon as it doped below that, the air compressor would kick on again, and bring up the psi to the set level again. The larger the air pocket, the less frequently the compressor would need to kick on. But the main reason I asked was because I don't want the tank run run dry. As an example if the system went through say 2 gallons of water each day, that's 14 gallons per week. To be on the safe side I would want a tank with a water volume of about 20 gallons to be sure it wouldn't be pushing out air at the end of the week. If it went through 1 gallon per day, then a 10 gallon water volume tank would suffice for the week etc. etc.. what ever size the water volume, I would want about 1/3 of the total tank volume to be dedicated to the air pocket, in order to keep the compressor from kicking on to often.

"Re: tub deck..you secure the surround to the wall studs as well as to the platform? Yes. Any photos instructions on building the platform and the support decking? I see your platform, but it is covered by the plywood. No pictures of that. Frame it like a mini-floor. 2-by framing members spaced 16" on center. I usually run the platform "joists" perpendicular to the direction that the floor joists are running. Do mark out a the area where your tub's drain and trap will run, box that out accordingly so the platforms' joists don't interfere with the plumbing. Then cover the platform with 3/4" CDX plywood. Also, on a side note..any instructions installing a kerdi shower but with a preformed shower pan? That might have been discussed in the "Kerdi Shower" thread. If it wasn't covered specifically, the detail for joining the wall Kerdi to the preformed shower pan flange is essentially the same as joining the Kerdi to a tub flange. I drew a couple of sketches regarding that detail in the KS thread. Should be towards the end. There should be one drawing showing the cement board being held above the flange and the tile hanging over to cover the flange. There should be a second drawing showing furring strips added to the faces of the wall stud, with the cement board then hanging down past the tub flange and the tile no the cement board. The latter would be a better when using small mosaic tiles. Also, I read on another post someone got a tub, but doesn't have a big enough water heater to fill it...does that happen often? That could happen. There is usually a minimum quantity of water that needs to be in a tub for a jetted tub to operate. That volume will put the water level above the jets, preventing the pump from cavitating. Some folks on the forum with smallish water heaters have mentioned that they fill the tub as much as they can, climb in and soak while the water heater is recharging, then fill it more while bathing. Remember, your body will displace water as well, raising the water level. So the answer? Yes, it could be a factor. How much of a factor depends on your water heater's volume and recycle time. That's not a question I'd be able to answer. Mongo

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The unit I used when I had an injury had larger plastic or rubber feet on the ends of the legs. With the weight spread out among 4 points, I would think it would be much less pressure than a person stepping into the tub or shower and having all their weight on one point. I honestly wouldn't worry about it as long as the legs had some sort of feet or cap on them. Now, if it were just a metal tube, that would be a different story.