Model # 3/4 LF25AUB-Z3

Internet #202922385

Store SKU #313675

Watts 3/4 in. Brass FPT x FPT Pressure Reducing Valve


3/4 in. Brass FPT x FPT Pressure Reducing Valve

  • Easy to install and reliable product
  • Reviewers find the Pressure Reducer works well with no leaks
$84.92 /each

Frequently Bought Together

Product Overview

This lead-free water pressure reducing valves is used in commercial and residential applications to reduce incoming water pressure for protection of plumbing system components and to reduce water consumption. It features a union inlet connection, integral stainless steel strainer and high temperature resistant reinforced diaphragm for hot water. It has an adjustable pressure range and is serviceable in-line.

California residents: see   Proposition 65 information

  • Solid lead-free brass construction
  • Versatile enough to use in commercial or residential applications
  • Integral stainless steel strainer is removable for cleaning
  • Maximum working pressure: 300 psi (21 bar), adjustable reduced pressure range: 25 to 75 psi (172 to 517 kPa), standard pressure setting: 50 psi (344 kPa)

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

What is the pressure set on? Seems our water pressure is much less after istalling new regulator.

Asked by: voice1
Looks like mine was factory set at 52psi.
Answered by: jblackst
Date published: 2016-09-29

where can i get this valve today

Asked by: Anonymous
Watts has an online search page to find a dealer in your area
Answered by: gitterdone
Date published: 2015-09-20

Is there a rebuild kit available for this item?

Is there a rebuild kit available for this item?
Asked by: Dave
I don't recommend buying a rebuild kit. Buying a new one is cheaper.
Answered by: Joe
Date published: 2017-02-10

I have a Watts 3/4" AUB Z3. Will this work?

the model number in this is LF AUB Z3 so I wasn't sure if it would be as easy as unscrewing the old one and screwing this one in.
Asked by: matt
Same here - broke it down at the two unions (need a pipe wrench), slid out the old one and slid in the new one, tighten down with pipe wrench. Leak test. Start to finish about 30 minutes.
Answered by: jblackst
Date published: 2016-11-29
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Customer Reviews

3/4 in. Brass FPT x FPT Pressure Reducing Valve is rated 4.3 out of 5 by 30.
Rated 3 out of 5 by from Well built pressure reducing valve but there is a design flaw. The union leaks. The O-ring in the... Well built pressure reducing valve but there is a design flaw. The union leaks. The O-ring in the union is too thin to hold supply side high water pressure; my supply pressure is 150psi. Other competitors use a think rubber gasket but Watts use a thin o-ring only. It's too thin. Applying teflon sealant on the o-ring stopped the leak temporarily but I don't think it can be a permanent solution. Other than that, it's a good valve. Water pressure and flow rate is good. I purchased a double sweat union model (3/4" LF25AUB-S-DU) at a local HomeDepot. It's not listed on website but local stores stock it. Double union model is easier to install and cheaper than FPT model. It's made in China.
Date published: 2017-02-10
Rated 1 out of 5 by from Failed after 28 months Purchased Watt 3/4 inch FPT x FPT brass pressure reducing valve from Home Depot in May 2014, I installed June 2014 at my home. In October 2016, received water bill for $120 more than usual lead me to discover the unit failed. The valve is located on a heavily wooded portion of my lot, and I was surprised to see a swamp on this rocky hillside next to the above grade install of this valve. Hope no neighbors get zika they will be mad at me! The leak occurred where one of several small bolts holds the upper and lower portions of the valve together (see uploaded photo of active leak). The piping is all PVC; so its not metal induced corrosion. This was a residential water service in San Antonio suburb where service side reaches 120 psi. Only 1 year warranty from Watts. Im looking for another brand to replace. See image of water spraying out of valve! I contacted Watts via website and asked if they would stand by product in some capacity; I dont anticipate hearing back from them but if I do I will update review.
Date published: 2016-10-14
Rated 5 out of 5 by from Worked perfect Worked just perfect. It was easy to install because it replaced the exact same valve. A professional plumber put the original in and it only lasted 2 1/2 years but it had a chunk of gasket floating inside when I took it apart. It looks like it got in there when plumber installed. Our water would come on full pressure then drop off drastically then build back up to full pressure. Not is is full steady pressure. Factory set was actually 51 PSI whick was just great for me.
Date published: 2016-08-22
Rated 5 out of 5 by from Should've bought sooner! The pressure regulator performed better than expected. Easy to adjust pressure due to seamless construction. My hubby, not a licensed plumber, was able to install without a hitch. Replaced one that died an ugly, wet death. Easy to read model numbers without squinting.
Date published: 2015-08-11
Rated 5 out of 5 by from A 20 minute swap out. The Watts valve is a replacement for a 20 year old valve with the same model number. The fit was exactly the same so no piping changes were necessary. It was a 20 minute change-out with the only requirement being a couple large pipe wrenches to break loose the existing 20 year old fittings. Amazing that Watts is still making the same model number after this many years.
Date published: 2014-06-17
Rated 5 out of 5 by from Very pleased I had a single stage pressure regulator and a water hammer problem. Tried a hammer stop at the water heater but that didn't solve the problem. Installed the two stage pressure regulator and solved my problem. This also stopped the water from pulsing in the lines.
Date published: 2016-08-30
Rated 5 out of 5 by from Nice Pressure Reducer Let's face it. Water pressure reducers are not all that sexy, fun, or much of a decorative statement. They just get installed and do what they do. This one has done just that. I took me a couple of trips to the store to get the right one (my fault not store's), but once I did, I just took the old one off, cleaned the pipe threads, doped them, and screwed the new one on. Done. Easy. I didnt even have to change the pressure setting. The factory setting seemed perfect for all faucets in the house.
Date published: 2013-05-21
Rated 5 out of 5 by from Works great for RV use! Product seems very well built with the majority of the unit made of brass, including the end fittings. I purchased this product to regulate the pressure for the city water connection on my RV. It was recommended to use the "whole house" regulators instead of an RV specific regulator in order to regulate pressure without sacrificing flow. I've only used the setup once so far but it worked like a champ. It was easy to install/setup and kept the pressure down without reducing flow or volume. My setup includes: Watts 3/4" whole house regulator outfitted with male/female hose connections and a Flotec 100 psi pressure gauge (to measure output pressure). If I had to pick a draw back it would be the overall size. The regulator itself is on the larger side and then adding the hose connections and pressure gauge makes for a rather large setup.
Date published: 2014-12-31
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