Zurn Wilkins 12-975XLST 1/2" Stainless Steel RPZ Backflow Preventer

Product Overview

The Zurn Wilkins 12-975XLST Reduced Pressure Principle Backflow Preventer is engineered to provide maximum protection against backpressure and backsiphonage in high-hazard potable water applications. Constructed from durable stainless steel, this RPZ backflow assembly offers superior corrosion resistance and reliable performance in demanding environments.

The wye-pattern body design allows independent access to each check valve and the relief valve, simplifying testing and maintenance. With full compliance to lead-free standards and major industry approvals, the 975XLST backflow preventer is a trusted choice for protecting water systems where a significant health risk exists.

Features & Benefits

• All stainless steel body for maximum durability and corrosion resistance

• Ideal for water systems with liquids corrosive to copper alloys

• Low-lead law compliant for potable water applications

• Separate access points for easy servicing of check valves and relief valve

• Tested and approved to meet rigorous safety and plumbing standards

• Compact and reliable design for medical, food service, and industrial systems

Applications

The Zurn Wilkins 12-975XLST is designed for installation on potable water lines where contamination poses a health hazard. Common applications include:

• Medical diagnostic and laboratory equipment

• Food and beverage processing facilities

• Breweries and distilleries

• Systems handling liquids incompatible with copper alloys

• Any installation requiring lead-free RPZ backflow preventers

Specifications

• Model: 12-975XLST

• Size: 1/2 inch (also available in 3/8 inch)

• Body Material: Stainless Steel

• Pressure Rating: 175 PSI maximum working pressure

• Temperature Rating: Up to 180°F (82°C)

• Connections: FNPT threaded, ANSI B1.20.1

• Standards Compliance:

  • ASSE® Listed 1013

  • NSF/ANSI 61 Certified

  • USC FCCC&HR Approved

  • Lead-free certified (NSF/ANSI 372)

Installation Tips

• Install in accordance with local plumbing and backflow prevention codes.

• Ensure unit is accessible for testing, maintenance, and inspection.

• Maintain proper clearances around the assembly for servicing.

• Install in a horizontal orientation unless otherwise specified by local regulations.

• Provide adequate drainage for relief valve discharge.

FAQs

Q: What is an RPZ backflow preventer?
An RPZ (Reduced Pressure Zone) preventer provides the highest level of protection by using two check valves and a relief valve to prevent contaminated water from entering potable systems.

Q: Where should this model be used?
It is best suited for commercial and industrial potable water lines where contamination would create a health hazard.

Q: Is this model lead-free?
Yes, it meets NSF/ANSI 372 standards with a maximum weighted average lead content of 0.25%.

Q: What makes this version different from the 975XL?
The 975XLST features an all-stainless steel body, making it ideal for corrosive environments where copper alloy valves are not suitable.