Zurn Wilkins 34-70XLDU Double Union FNPT Pressure Reducing Valve, 3/4"

This is definitely the model you want for typical household use. Much better than the Wilkins NR3XL.I've been running a 1" Wilkins NR3XL (their most basic model) pressure reducing valve on my residential water main line for about 4 years. I was always frustrated by the pressure dropoff with the most basic flow demands. To throw out some numbers, my incoming pressure is around 100 PSI, and I set the outgoing pressure to 60 PSI. If I turned on the kitchen sink faucet, I got a pressure drop of 20 PSI (to 40PSI). With a second demand, such as a toilet flush, the pressure dropped by over 30PSI (to about 30 PSI). I commonly had a working PSI of about 25 to 40 PSI under typical load.I did some research and read that this model has much better flow capacity (i.e. less pressure dropoff under demand). I installed it and took new pressure measurements under load. Running the kitchen sink faucet now produces a dropoff of 3 PSI. Add flushing a toilet and running the bathroom sink and the total dropoff is still under 10 PSI. I now rarely see the working pressure go under 50 PSI. The pressure is much less variable now.

I received contradictory information on what is included with the valve. I almost cancelled the order because I was told the valve didn't contain the tail pieces. For anyone else that might be confused I have attached 2 photos of what came in the box.

Upon investigating increasing water hammer when dishwasher started, I found household water pressure to be 125psi. Great for throwing water out there with garden hose, but bad for appliances. Replaced a 30 year old buried pressure reducing valve with this one. Comes with two 3/4" female adapters with rubber o rings. No need for teflon tape with o rings. Just don't over tighten it and crush the rubber. Lead free according to attatched label. No leaks and tested to 50psi from factory. Will adjust to 75psi as the decreased pressure is very noticeable spraying with a garden hose. Would absolutely buy again.

Stock setting is set at 50 psi and gauge is showing near 60 psi. To raise pressure, turn adjustment clockwise (into bell housing). Notice how close the bolt is to housing and pressure still stuck near 60 psi.Update from manufacturer:When installing a new pressure reducing valve it is common to get debris in the valve which can cause it not to regulate correctly. The valve will need to be taken apart and cleaned. We cannot advise the turns to adjust PSI as every valve is under different pressure settings.If this is the case, then shouldn't the valve include debris screen vs having to take part the valve which is a lot of work?

I have my doubts about the quality. This is the second time that I have had to replace this failed part. The first time this part failed it caused a connection to my reverse osmosis to blow out and flood my house. I have owned a lot of houses and have never before had to replace a pressure regulator. Made by Zurn Industries, box says assembled in USA, but parts are from China, Taiwan, and US. Inferior parts, in my opinion, that don't last like they should! I have now installed a pressure gauge and check it regularly because I can't trust that it will not fail again.

I used this as part of a water system upgrade on my house. Because of water problems with our well water we have an complex filter system. In order to have decent pressure in the house I increased the well pump pressure set point. I added this regulator downstream of the filter to avoid dramatic pressure swings caused by variation in water draw and fluctuation of the pressure in the pressure tank.I found this part easy to install and to adjust. I wish that Amazon sold the version that has a port for a pressure gauge. I used a garden-hose pressure gauge for the adjustment. Clunky, but much cheaper than the fitting chain required to add a permanent pressure gauge.I cannot comment on the long term reliability or maintainability, but for now, I'm pleased.

Replacing a 17 year old original valve gone bad reading 130 psi static pressure and ridiculous pressure drops when 2 or 3 faucets open. Read reviews on this valve, measured the size between union nuts and pipe diameter, turns out an exact fit. Literally took me longer to find my pipe wrench than to replace the valve. Set it to 60 psi static pressure and solved the pressure drop issues as well. No more weak shower when sinks or laundry or irrigation valves are open. Amazing upgrade for your pressure issues. Highly recommend.

I live in an area with high water pressure and rely on these to protect the household plumbing. Note that they need cleaning and an occasional rebuild. When used to protect home or other you should have a pressure gauge mounted somewhere downstream to monitor pressure increase which may indicate time for a rebuild. Pressure gauge can be anywhere in the system downstream from the regulator. Most important is that you see it frequently-mine is near a faucet I use frequently. Amazon pricing was excellent.Pressure is externally adjustable and when adjusting there should be some water flow downstream of the device. There are multiple options from double flange mount to double FPT .

Funciona excelente, regula la presión en el sistema hidráulico.