Zurn Wilkins 2-350XL 2-Inch Double Check Backflow Preventer (Lead-Free) - 2-350XL
The Wilkins 350XL 2-inch Double Check backflow preventer is a lead-free, FNPT x FNPT assembly designed to protect potable water systems from low-health-hazard backflow. Its compact, serviceable design fits irrigation and commercial installations where reliable protection and easy servicing are required.
Engineered for durability and ease of service, the 350XL offers dependable low-health-hazard protection with accessible parts and clear documentation. Follow the included installation and maintenance instructions and consult repair parts documentation when servicing.
Features
-
EZSwap removable pressure vessel: Patented removable pressure vessel enables safe and quick line flushing, fast winterization and simplified maintenance or repair without replacing the body.
-
Lead-free construction: Low-lead design complies with lead-free law requirements and is suitable for drinking water service.
-
Top-mounted test cocks: Convenient top-mounted test cocks simplify field testing and reduce installation time.
-
FNPT x FNPT connections: Standard threaded inlet and outlet connections for straightforward integration with existing piping.
-
Blow Out / Flush option: Blow Out Flush fitting is available to assist winterizing and seasonal maintenance where needed.
-
Documentation and support: Specification sheets, installation and maintenance manuals, and repair parts lists are provided to support accurate installation and service.
What our Experts Think
-
Reliable dual-check protection: Engineered to prevent both back-siphonage and backpressure in low-risk contamination environments.
-
Lead-free construction: Meets modern plumbing code requirements for safe use on drinking water systems.
-
Service-friendly modular design: Features a removable internal cartridge assembly for faster repairs, flushing, and winterization without removing the full unit.
-
Durable bronze body: Built for long service life with corrosion-resistant materials suited for outdoor and buried valve box installations.
-
Low maintenance operation: Designed for easy access to internal checks and simplified in-line servicing.
-
Ideal applications: Best suited for irrigation systems, fire lines, and other low-hazard potable water protection scenarios where RPZ is not required.
Q&A
Q: What is the Zurn Wilkins 2-350XL used for?
A: A 2" lead-free double check backflow preventer designed to protect potable water systems from low-hazard contamination caused by backpressure or backsiphonage.
Q: Is it approved for drinking water systems?
A: Yes. It is lead-free compliant and certified to NSF/ANSI 61 and ASSE 1015 standards for potable water use.
Q: What type of backflow protection does it provide?
A: Double check valve assembly (DCVA), ideal for low-health-hazard applications like irrigation and commercial water lines.
Q: What makes the 350XL design easier to service?
A: It uses a removable EZSwap pressure vessel/cartridge, allowing quick maintenance, flushing, and winterization without removing the full body.
Q: What are its operating limits?
A: Typically rated up to 175 PSI working pressure and about 180°F maximum temperature.
Q: What materials is it made from?
A: Lead-free bronze body with corrosion-resistant internal components and a compact modular cartridge design.
Q: Where is it commonly installed?
A: Irrigation systems, commercial plumbing, and other potable water systems where backflow prevention is required but high-hazard RPZ protection is not needed.
Maintenance Tips
Damage 
Loss 
Theft 
