Model # 1-70XLDUC

Internet #203999025

Zurn-Wilkins 1 in. Lead-Free Bronze Water Pressure Reducing Valve with Double Union Female Copper Sweat


1 in. Lead-Free Bronze Water Pressure Reducing Valve with Double Union Female Copper Sweat

$9643 /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

The Zurn-Wilkins Model 70XLDUC is designed for installation on potable water lines to reduce high inlet pressure to a lower outlet pressure. The double union female copper sweat connections makes this device most suitable for applications with minimal clearance and installations requiring frequent off-site maintenance. The direct acting integral by-pass design prevents buildup of excessive system pressure caused by thermal expansion. The balanced piston design enables the regulator to react in a smooth and responsive manner to changes in system flow demand, while at the same time, providing protection from inlet pressure changes.

  • All bronze body and bell housing provides durability and long life
  • Built-in by-pass prevents buildup of excessive system pressure caused by thermal expansion
  • Maximum working pressure rated 300 psi, maximum working water temperature 140°F
  • Spring range 25 to 75 psi; factory set at 50 psi
  • ASSE listed 1003, IAPMO listed, CSA certified, city of Los Angeles approved, NSF listed, standard 61, annex G

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

Can you install on vertical piping

Asked by: rudy
Yes, orientation is NOT an issue.
Answered by: phil7782
Date published: 2017-06-24

Horizontal installation only?

All the illustrations I've seen for this pressure reducing valve show its connections horizontal and adjustment bolt vertical (bell housing on top). Will it function correctly if the unit is rotated 90 degrees and the adjustment bolt is horizontal (bell housing pointing left or right)?
Asked by: RegQues
No, both horizontal and vertical is allowed. The pipes can be vertical or horizontal and the adjustment bell can be oriented vertical or horizontal in relation to a horizontal pipe. With a vertical pipe the adjustment bell is always horizontal.
Answered by: phil7782
Date published: 2017-01-11

My I.D. tag only states Model 70,is this the correct replacement

My I.D. tag only states Model 70,is this the correct replacement
Asked by: tod
"just about" all pressure regulators (PR) are a standard size, end to end and will fit existing inlet pipes without modification. The difference is in the fittings. For installation and removal ease, they might have only 1 union and a threaded end or both ends might be unions. If unions, the threads of the old unit "might" fit. I've replaced other brands of PR's with this brand where the threads did not match and I had to change the nut and sweat ends. You either have 1" or 3/4" fittings. As long as you match the size and the type of connection fittings, you "shouldn't" have much issue. The double union sweat fittings add significantly to the cost of the PR over the cost of the single union. Of course, the double union is much easier to change out. When setting pressure using a hose bibb pressure guage, check the pressure and adjust, if necessary, while you have a faucet in the house running at medium flow. The pressure is "normally" 70 psi, but can be raised a bit to increase flow in upstairs showers. Regardless of flow inside the house, the pressure should stay fairly steady. The higher the flow, the lower the pressure "might" drop. The main thing is to keep the pressure low enough so it doesn't cause water using appliances and fixtures to fail prematurely.
Answered by: phil7782
Date published: 2017-03-02
  • y_2017, m_7, d_23, h_1CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_3
  • loc_, sid_203999025, 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, 86ms

Customer Reviews

1 in. Lead-Free Bronze Water Pressure Reducing Valve with Double Union Female Copper Sweat is rated 4.2 out of 5 by 10.
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2017-04-21
Rated 5 out of 5 by from Had a 1" main line into house with a bad regulator made by someone else. The union fittings on th... Had a 1" main line into house with a bad regulator made by someone else. The union fittings on the pipes would not fit the Z-W regulator I had on hand. So, I had to order the whole unit in order to get the 1" sweat fittings and nuts. The unit worked great and fit well. The house line pressure stayed stable regardless of flow demands. I just wish I could have ordered the sweat fitting and nuts by themselves.
Date published: 2017-01-11
Rated 2 out of 5 by from Good, but not a good value The ease of installation was great, but the device SHOULD last at about a year (according to HD staff and the plumber who installed my water heater)... on my 4th one now, average life expectancy has been 6 months, making it less and less of a value for the price.
Date published: 2014-12-10
Rated 4 out of 5 by from Efficient Pressure Reducer Valve Installation The replacement installation was a perfect size match for my Honeywell Braukmann making installation go fast as the threading on the PRV matched the existing pre-sweated union. The adjustment range is not fantastic, 25 to 75, and the temperature range is lower than many making a full sun exposure in the southwest a bit daring. This model was designed in 1972, so it has proof of time behind it, and likely a significant "plumbers' trade" discount improving the plumbers profit. Following installation, the pressure was measured by the plumber at 60 lbs, not the 50 lbs as advertised. There is a benefit to this model as it is repairable/rebuildable if you find a plumber that will do that; as I could not, repairability is a "feature" of no value to the non-plumber home owner. FYI California, this valve does meet California's front running plumbing regulations for low/no lead construction. Now, for the acid test, it has held the desired 70 lbs. pressure with nominal fall-off (drop in pressure) when fixtures are in use. We have backflow regulations in our community, so thermal expansion is a problem that my plumber says can be exacerbated (my word, no the plumbers) by a poorly performing PRV. I doubt that, so I also installed a thermal expansion tank. FYI, Home Depot also provided me with the expansion tank (an obsolete model) no longer sold by the manufacturer.
Date published: 2015-01-23
Rated 5 out of 5 by from Perfect drop in replacement This was a perfect drop in replacement for the 15 year old Wilkins unit it was replacing. This meant I only had to undo the unions and slide the new unit it place-- I didn't even have to sweat the new fittings onto the copper. Only had to have the water to the house shut off for five minutes instead of 30 which made the wife and kids much happier. Pricing was middle of the road, but the product was available to be shipped immediately so it was worth it to me to pay more since my water pressure inside the house was 140 psi and EVERYTHING was leaking.
Date published: 2014-12-18
Rated 5 out of 5 by from No problems I just handed the box to the plumber, who just looked through it and said, "Yup, that's everything I need". I didn't hover over him, but it seemed to go in pretty quickly (this was a new one, so he had to cut out a piece of pipe). It seems to be working as expected and not leaking.
Date published: 2015-07-08
Rated 1 out of 5 by from Easy Install I like how easy it is to install. However, the product I received may have been defective since water is still dripping from the shower head and faucets.
Date published: 2014-06-17
Rated 5 out of 5 by from Water Pressure Reducing Valve Purchased these units for use at our HOA. They were installed easily by one of our HOA owners that has plumbing experience. There were no complications and the valves have not required any additional attention other than to monitor the PSI.
Date published: 2014-10-07
  • y_2017, m_7, d_19, h_8
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_10
  • loc_, sid_203999025, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 16ms