Welcome to the Wilkins Backflow Preventers category, your go-to source for high-quality devices that safeguard water systems from contamination. Featuring the Zurn Wilkins 1" 350XL Double Check Backflow Preventer with SAE Flare Test Fitting, these products deliver proven performance for demanding industrial and commercial applications, ensuring compliance and peace of mind.
Understanding Wilkins Backflow Preventers
Backflow preventers are essential plumbing fittings that stop the reverse flow of contaminated water into clean supplies, protecting public health and infrastructure. Wilkins, a trusted name in the industry now under Zurn, stands out for its durable, lead-free bronze construction and rigorous testing standards. This category highlights the 350XL series, a double-check valve assembly ideal for high-hazard fire protection and irrigation systems.
As part of our expansive Industrial & Scientific offerings, Wilkins products integrate seamlessly into Hydraulics, Pneumatics & Plumbing setups. Whether you're maintaining commercial buildings or municipal water lines, these preventers meet ASSE 10115 and other certifications.
Spotlight on the Zurn Wilkins 1" 350XL Double Check Backflow Preventer
The flagship item in this category, the 1" 350XL, combines robust design with user-friendly features. Its modular check valves allow easy maintenance without full disassembly, while the SAE flare test fittings simplify field testing. Bronze body resists corrosion, and spring-loaded checks ensure tight shutoff even under varying pressures.
This model excels in sizes from 3/4" to 2", but the 1" variant balances flow rates up to 105 GPM with compact installation. Compared to earlier Wilkins 300 series, the 350XL offers improved replaceable seats and O-rings for longer service life.
Key Features to Consider When Buying Wilkins Backflow Preventers
- Material Quality: Lead-free bronze or ductile iron for corrosion resistance and compliance with NSF/ANSI 372.
- Valve Type: Double check for non-health hazard protection; reduced pressure zone (RPZ) options available in Wilkins lineup for higher risks.
- Testability: Ball valve shutoffs and test cock fittings for annual inspections.
- Flow and Pressure: Match to system demands, 350XL handles 10-175 PSI.
- Approvals: UL/FM listed for fire service, cUPC for plumbing.
When shopping, prioritize models certified for your local codes. The 350XL shines for its balance of affordability and reliability in Fittings applications.
Common Use Cases for Wilkins Backflow Preventers
Professionals install these in fire sprinkler systems, boiler feeds, and irrigation to prevent back-siphonage. In commercial laundries or manufacturing plants, they protect potable water from chemicals. Homeowners with wells may opt for smaller Wilkins units, though this category targets industrial-scale needs.
For alternatives, explore WATTS Backflow Preventers for similar RPZ designs or Zurn Backflow Preventers for integrated solutions, all within our Backflow Preventers collection.
Why Wilkins Excels in Backflow Prevention
Wilkins has decades of innovation, pioneering replaceable check modules that cut downtime. Their products undergo 10,000-cycle endurance tests, outperforming generics. Superior bronzing and precision machining ensure low head loss, maximizing system efficiency. Backed by Zurn's engineering support, Wilkins prioritizes installer-friendly designs over cost-cutting.
Versus competitors like Eastman, Wilkins offers broader approvals and field-proven durability, making it the choice for pros.
Frequently Asked Questions
What warranty does Wilkins offer on backflow preventers?
Wilkins provides a 5-year limited warranty on the 350XL, covering defects in materials and workmanship. Register your product for full coverage.
How does Wilkins compare to other brands like WATTS?
Wilkins edges out with modular repairs and fire-rated approvals, while WATTS excels in RPZ variety. Choose based on your hazard level.
Which Wilkins model is best for fire protection?
The 350XL series, like our 1" model, is UL/FM listed and ideal for reliable, testable performance in sprinklers.
Do Wilkins backflow preventers require annual testing?
Yes, local codes mandate yearly inspections. The SAE flare cocks make it straightforward for certified testers.
Can I install a Wilkins 350XL myself?
Professional installation recommended due to plumbing codes. Ensure horizontal orientation with unions for easy access.
