Damages and issues Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Features: Sizes 1/2", 3/4", 1", 1-1/4", 1-1/2", 2" Maximum working water pressure 175 PSI; Maximum working water temperature 180°F; Hydrostatic test pressure 350 PSI; End connections Threaded FNPT ANSI B1.20.1.

Standards Compliance: • ASSE® Listed 1013 • IAPMO® Listed • CSA® Certified B64.4 • AWWA compliant C511 • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California • UL® Classified (less shut-off valves only, 3/4"-2") • C-UL® Classified (less shut-off valves only, 3/4"-2") • Certified to NSF/ANSI 372* by IAPMO R&T • NSF® Listed-Standard 61, Annex G* *(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT).

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. To start a return, you can contact us at info@masterbuildermercantile.com. If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted. You can always contact us for any return question at: info@masterbuildermercantile.com.

Zurn Wilkins 375XL RP Reduced Pressure Principle Assembly Backflow Preventer Lead-Free 1-1/4", 1-1/2", 2" Repair Parts: Click Here.

Typical Installation: Local codes shall govern installation requirements. To be installed in accordance with the manufacturers’ instructions and the latest edition of the Uniform Plumbing Code. Unless otherwise specified, the assembly shall be mounted at a minimum of 12” (305mm) and a maximum of 30” (762mm) above adequate drains with sufficient side clearance for testing and maintenance. The installation shall be made so that no part of the unit can be submerged.

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Zurn Wilkins 1-375XL 1" RP Reduced Pressure Principle Assembly Backflow Preventer Lead-Free Specification Submittal: Click Here.

Exchanges The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

Materials: 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 Stainless Steel, 300 Series.

Zurn Wilkins 1-375XL 1" RP Reduced Pressure Principle Assembly Backflow Preventer Lead-Free BIM/3D Model and 2D DXF Drawings: Click Here.

Zurn Wilkins 1-375XL 1" RP Reduced Pressure Principle Assembly Backflow Preventer Lead-Free Engineering Specification: The Reduced Pressure Principle Backflow Preventer shall be certified to NSF/ANSI 372, ASSE® Listed 1013, rated to 180°F, and supplied with full port ball valves. The main body shall be Nylon and the seat disc elastomers shall be silicone. If installed indoors, the installation shall be supplied with an air gap adapter. The Reduced Pressure Principle Backflow Preventer shall be a ZURN WILKINS Model 375XL.

Application: Ideal for use where Lead-Free* valves are required. Designed for installation on potable water lines to protect against both backsiphonage and backpressure of contaminated water into the potable water supply. Assembly shall provide protection where a potential health hazard exists.

The ST-750 manual contains everything you need to install the product correctly. If you have further queries or need advice then get in touch with our customer service team.

Zurn Wilkins 1-375XL 1" RP Reduced Pressure Principle Assembly Backflow Preventer Lead-Free CAD Drawing File: Click Here.

Zurn Wilkins 1-375XL 1" RP Reduced Pressure Principle Assembly Backflow Preventer Lead-Free Installation and Maintenance Instructions 1-1/4", 1-1/2", 2": Click Here.

Zurn Wilkins 1-375XL RP Reduced Pressure Principle Assembly Backflow Preventer Lead-Free 1/2", 3/4", 1" Repair Parts: Click Here.

Refunds We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.

Zurn Wilkins 1-375XL 1" RP Reduced Pressure Principle Assembly Backflow Preventer Lead-Free Installation and Maintenance Instructions 1/2", 3/4", 1": Click Here.

Exceptions / non-returnable items Certain types of items cannot be returned, like perishable goods, and custom products (such as special orders or personalized items). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item. Unfortunately, we cannot accept returns on sale items or gift cards.