Model # 1 LF25AUB-Z3

Internet #203804614

Watts 1 in. Lead-Free Brass FPT x FPT Water Pressure Reducing Valve


1 in. Lead-Free Brass FPT x FPT Water Pressure Reducing Valve

$12682 /each
store icon Loading Buying Options...
package icon Loading Buying Options...
Sorry, but we ran into issues loading these options. Please try refreshing.

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 (344kPa)

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents.  Download a free copy from the Adobe Web site.




Warranty / Certifications

More Products With These Features


Customer Questions & Answers

Is the Watts 1" pressure reducing valve model LF25AUB-Z3 threaded on both the input and output connections?

Asked by: Moose
"NPT threaded female union inlet x NPT female outlet" . . . meaning "YES," it is threaded on both ends, one side employing a union.
Answered by: KingRoy
Date published: 2016-08-14

is this available at a store in the Birmingham area?

Asked by: John
This kind of question is generally best answered by Home Depot customer service. However, I checked on it at the Eastwood store and saw "Not in Your Store - We'll Ship It There." So you can order it online and pick it up there (or possibly at either of the other two Birmingham stores).
Answered by: KingRoy
Date published: 2016-12-12

I need a union x union watts regulator 25 aub 1" to replace existing bad unit

Need be sure it is a union by union connections before I order...Also, if possible what is the overall length, I need it to be installed without modifying existing plumbing. Thanks, Bill
Asked by: Bill
This from the tech info sheet: Models LF25AUB-Z3 NPT threaded female union inlet x NPT female outlet LF25AUB-S-Z3 Solder union inlet x NPT female outlet LF25AUB-DU-Z3 Double Union – NPT threaded union female inlet and outlet LF25AUB-S-DU-Z3 Double Union – Solder union inlet and outlet LF25AUB-DU-THDxPEX-Z3 Double Union – NPT threaded female inlet and PEX union outlet LF25AUB-DU-LF-Z3 Double union body less fittings ( 3 / 4 ", 1", 1 1 / 4 ") LF25AUB-QC-Z3 Single Union – Quick-Connect union inlet ( 1 / 2 ", 3 / 4 ", 1") LF25AUB-DU-QC-Z3 Double Union – Quick-Connect inlet and outlet ( 1 / 2 ", 3 / 4 ", 1")
Answered by: KingRoy
Date published: 2016-06-13

Can this regulator be used on a secondary water (irrigation) system?

Asked by: nick
  • y_2017, m_7, d_19, h_4CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_4
  • loc_, sid_203804614, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=BEST_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=POSITIVE_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 97ms

Customer Reviews

1 in. Lead-Free Brass FPT x FPT Water Pressure Reducing Valve is rated 4.8 out of 5 by 5.
Rated 5 out of 5 by from DO this yourself! I was quoted $525 by a local plumber in Phoenix to replace this regulator. $525!!! Seriously? And, when i called other plumbers they would not quote this replacement over the phone. So, I looked at what was already there, researched it's replacement on Youtube and decided to do it myself. I needed a plumber's wrench, the regulator and a pressure gauge. I first turned the water off at the source then unscrewed the large nuts on either side of the existing regulator and pulled the old one out along with the old o-rings. I think positioned the new o-rings in place and placed the new regulator, minding the flow arrows on it, in place and tightened the nuts. Then, turn the water back on and listen for the flow. I put the pressure gauge on the spigot and tested it and it required a slight adjustment in the screw on the side of the regulator. I also tested the flow in the house and all is well. I would recommend doing this job yourself unless you need to add a new regulator where there was none. That job requires a licensed plumber because it will necessitate cutting the existing pipe and some sweat soldering some adapters in place. My job, start to finish, took all of less than 15 minutes. $525??? Seriously. Don't get ripped off. . .do this yourself.
Date published: 2016-03-21
Rated 5 out of 5 by from Reliable I've used Watts regulators before and this is the same quality I've bought in the past. They also sell rebuild kits for these. So after 20 years you find the regulator is bleeding excess pressure past. You can restore it to new. A 12 year old with a crescent wrench and a screw driver can rebuild it in 20 minutes. It's a well made product.
Date published: 2016-12-13
Rated 4 out of 5 by from Reliable replacement Installed without a problem, works as it should. Four stars and not five because I had to tighten the six bolts before installation. Otherwise there'd eventually be a leak where the gasket is.
Date published: 2016-04-19
Rated 5 out of 5 by from Way better than a rebuild kit. I priced rebuild kits for this item. Very expensive for what you get. For not much more money you can buy the unit, learn how to disassemble it, and swap all the innards into your existing bad unit. It wasn't practical for me to replace the entire reducer. The problem was that every time the water was turned off, there would be a noisy pulsation, due to a leaky diaphragm and a rotted o-ring.
Date published: 2013-08-22
Rated 5 out of 5 by from good product the product is a good pressure regulator meeting the specs for the installation
Date published: 2016-07-05
  • y_2017, m_7, d_19, h_12
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_5
  • loc_, sid_203804614, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 103ms