3/4" Wilkins 375 Reduced Pressure Principle Assembly Zoom

3/4" Wilkins 375 Reduced Pressure Principle Assembly


Brand: Zurn

34-375 has been discontinued.
Direct Replacement:
SKU: 34-375XL
Brand: Zurn

Do not use this item for any installation or repair of potable water applications. This product does not comply with the "Safe Drinking Water Act," which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking). This item is for non-potable (non-human consumption) water applications only.



Size: 3/4"
Weight (lbs): 5.7 lbs
Max Pressure (PSI): 175
Hydrostatic Test Pressure: 350 PSI
Material: Bronze
Connection Type: Female Threaded

Description for Zurn 34-375


This reduced pressure principle assembly is designed for installation on potable water lines to protect against both back-siphonage and back-pressure of contaminated water into the potable water supply. Assembly shall provide protection where a potential health hazard exists

Standards Compliance

  • ASSE┬« Listed 1013
  • IAPMO┬« Listed
  • CSA B64.4
  • AWWA compliant C511
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
  • Housing: Reinforced Nylon, FDA approved
  • Fasteners: Stainless Steel, 300 Series
  • Elastomers: Silicone (FDA Approved), Buna Nitrile (FDA Approved)
  • Internals: Delrin, Nylon, NSF Listed
  • Springs: Stainless steel, 300 series
  • Ball Valves: Cast Bronze, ASTM B 584
  • Struts: Forged Brass, ASTM B 124
NOTE: Image depicts 3/4" assembly

3/4" Wilkins 375 Reduced Pressure Principle Assembly


by PowerReviews
Zurn3/4" Wilkins 375 Reduced Pressure Principle Assembly

(based on 2 reviews)

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Reviewed by 2 customers

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i would buy again

By kingflow

from rocky river, ohio

Verified Buyer

Comments about 3/4" Wilkins 375 Reduced Pressure Principle Assembly:

best price i've come accross


Wilkins Zurn RPZ

By Marty

from Woodridge, IL

Verified Buyer

Comments about 1" Wilkins 375 Reduced Pressure Principle Assembly:

Perfect condition. Fast delivery. Thank you very much. As a small business owner, I depend on quick service, you certainly help me provide that. Thanks again.

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2 Questions | 2 Answers
Displaying questions 1-2
  • 1" Wilkins 375 Reduced Pressure Principle Assembly


    How do I install this? HELP
    Asked on 5/25/2012 by pex-wizard from chicago, il

    1 answer



      Go to the product page on PexSupply.com and find the gray Manuals tab. Click on it and find "Installation and Maintenance Guide". This should have what you are looking for. The following link should take you directly to the Installation and Maintenance Guide:


      Answered on 6/18/2012 by PexSupply Staff from NY
  • 3/4" Wilkins 375 Reduced Pressure Principle Assembly


    shouldn't my 3/4" Wilkins 375 Reduced Pressure Principle Assembly be installed in a horizontal orientation to allow for proper operation and drainage of the relief valve? The reason I ask is that I have a plumber telling me that it can be installed in a vertical orientation.. do you have more detailed printable information on this specific installation issue?
    Asked on 5/25/2012 by jeff from mo

    1 answer



      I have my backflow installed horizontally. Vertically just doesn't make since, and I haven't seen one to date installed in that position. If I'm not mistaken, if the height of the backflow is lower than the highest point of your yard this could be why he's recommending it. Hope this helps.

      Answered on 5/25/2012 by Anonymous
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