Welcome to our comprehensive guide on Zurn backflow preventers, where reliability meets innovation in plumbing protection. These essential devices prevent the reverse flow of contaminated water into clean supplies, safeguarding public health in residential, commercial, and industrial settings. With models ranging from 3/4" to 2" sizes across pressure vacuum breakers, reduced pressure principle, and double check types, Zurn delivers durable, code-compliant solutions trusted by professionals.
Understanding Zurn Backflow Preventers
Zurn, a leader in plumbing technology, specializes in backflow prevention assemblies designed for high-performance under varying pressures and conditions. Their products feature bronze construction, lead-free materials, and approvals from organizations like ASSE, USC, and IAPMO, ensuring compliance for potable water systems. Whether you're installing in irrigation lines, fire protection, or process water applications, Zurn models provide superior shutoff, easy maintenance, and long-term durability.
As part of the broader Backflow Preventers category within Hydraulics, Pneumatics & Plumbing, Zurn stands out for its engineering precision. These preventers are ideal for high-hazard or low-hazard scenarios, helping plumbers and facility managers meet local codes effortlessly.
Key Features to Consider When Buying Zurn Backflow Preventers
Selecting the right Zurn model involves evaluating several factors:
- Type: Pressure Vacuum Breakers (PVB) like the 720A series for above-ground, intermittent use; Reduced Pressure Principle (RP) like 975XL for high-hazard continuous pressure; Double Check (DC) like 350XL for non-health hazard protection.
- Size: From 3/4" for residential irrigation to 2" for larger commercial systems—match to your pipe diameter for optimal flow.
- Material and Design: Bronze bodies resist corrosion; ball valve shutoffs and wye-pattern strainers simplify testing and servicing.
- Certifications: Look for NSF/ANSI 372 low-lead compliance and approvals for your region's plumbing codes.
- Installation: Most are inline, horizontal setups with union ends for easy retrofits.
Common use cases include lawn sprinklers to avoid fertilizer backflow, boiler feeds, and multi-story buildings. For alternatives in Fittings, Zurn integrates seamlessly.
Comparing Top Zurn Backflow Preventer Models
Zurn's lineup caters to diverse needs. Here's a breakdown to help you choose:
- 720A Series (3/4" and 1"): PVB assemblies excel in irrigation and low-pressure applications. The 3/4" 34-720A offers compact design for residential use, while the 1" 1-720A handles higher flows. Both feature spring-loaded check valves for reliable air gap protection.
- 975XL Series (3/4", 1", 2"): RP preventers for high-hazard zones. The 34-975XL and 1-975XL provide dual checks with relief valve for continuous pressure; the 2" 2-975XL suits large commercial setups with top-mounted valves for easy access.
- 350 Series (3/4", 1"): DC valves for clean water risks. The 34-350 is budget-friendly for basics, upgraded to 1-350XL and 1-350 with bronze durability and low pressure loss.
- Other Standouts: 34-710 (3/4" PVB) for smaller lines; 1-375XL (1" RP) for specialized high-hazard needs.
Choose PVB for cost-effective, atmospheric venting; RP for unforgiving contaminants; DC for efficiency in approved water sources. Zurn's modular design allows field-repairable parts, reducing downtime compared to competitors.
If exploring options like WATTS Backflow Preventers or Eastman Backflow Preventers, Zurn edges out with superior bronze metallurgy and broader approvals.
Why Zurn Excels in Backflow Prevention
Zurn's reputation stems from decades of innovation, including the first approved RP assembly. Their products undergo rigorous testing for freeze resistance and flow rates, backed by robust warranties. Professionals praise the user-friendly test cocks and replaceable seats, minimizing service calls. In a market crowded with imports, Zurn prioritizes American-made quality within Industrial & Scientific standards.
Frequently Asked Questions
What warranty does Zurn offer on backflow preventers?
Zurn typically provides a 5-year limited warranty on assemblies, covering defects in materials and workmanship. Register your product for extended support and access to authorized service centers.
How do Zurn models compare to competitors like WATTS?
Zurn offers more compact designs and easier maintenance access, with proven longevity in harsh environments. WATTS models are solid alternatives, but Zurn leads in RP technology for high-pressure apps.
Which Zurn backflow preventer is best for irrigation systems?
The 720A series (3/4" or 1") is ideal for above-ground irrigation due to its PVB design, preventing backsiphonage without a full relief valve.
Can Zurn backflow preventers be installed vertically?
Most models, like 975XL, support vertical installs in approved orientations—always check the manual and local codes for union-end flexibility.
How often should Zurn backflow preventers be tested?
Annual testing is standard per most codes; Zurn's test cock design simplifies this for certified technicians.
