Protecting your water system starts with the right device. The Zurn Wilkins backflow preventer helps stop dirty water from flowing back into clean lines. This matters in homes, businesses, and irrigation systems. It’s built to guard against pressure drops, unexpected flow changes, and plumbing mistakes.
The 3/4″ Zurn Wilkins 350 DCVA is one of the most trusted options on the market. It handles common threats and keeps water safe. With strong ratings and certified parts, it works well in both residential and light commercial settings.
Here’s what makes it stand out.
Why the Zurn Wilkins Backflow Preventer Gets the Job Done
This unit uses a double check valve system. It’s a simple but effective way to block backflow. Two spring-loaded valves work in a row, so if one fails, the second keeps the system protected.
The 350 DCVA handles up to 175 PSI and temperatures from 33°F to 180°F. That covers most climates and setups. Its size works best for 3/4″ water lines and flows up to 30 GPM.
You also get key certifications like ASSE 1015, CSA B64.10, and AWWA C510—proof it meets strict performance and safety standards.
Water Line Protection with Smart Design
You get more than basic water line protection with this device. It includes an EZSwap pressure vessel. That means the core piece can be removed in one step. No need to take the whole unit apart. This cuts service time by more than half.
There’s also a built-in FLUSH tool. This helps push out debris before startup, so valves stay clean. It saves about 15 minutes during install, which matters for plumbers working on tight schedules.
The body is made from reinforced nylon and stainless steel. It’s lightweight, corrosion-resistant, and holds up outside.
Why It Fits Where Others Don’t
Tight spaces are common. This model’s compact size helps a lot during retrofits or installs in small utility rooms. It’s smaller than most traditional assemblies, but still meets code.
It also uses less water during winterization and maintenance. That’s a bonus for saving time and cutting waste.
Installation and Service Tips
Install it at least 12 inches from the ground. Leave room above and behind it so technicians can reach the valves and test cocks.
You’ll need a few tools:
- Pipe wrenches
- Level
- Teflon tape or compound
- Tubing cutter
- Pressure gauge
Use the FLUSH tool before final connections to clear the supply line. That keeps debris from messing with the valves.
Test once installed. Regular checks are key. For homes, test once a year. For businesses, go twice. If the system gets heavy use, inspect quarterly.
Troubleshooting Basics
Here are some quick fixes:
- If water leaks, clean the check valves.
- If pressure drops, look upstream for supply issues.
- If the system fails a test, clean or swap the internal checks.
In cold areas, drain the unit for winter. Blow out lines gently using low-pressure air. Don’t forget to leave the plugs loose so nothing freezes.
A Look at Performance and Materials
Users like this unit for its quick service access and sturdy feel. The 3/4 backflow valve size limits it to lower-flow systems, but that’s expected.
The nylon housing does draw questions from a few pros used to all-metal bodies. Still, feedback shows it holds up in most settings.
Rated at 4.3 stars, 80% of users give it 4 stars or higher. Most issues come from DIY installs. Pros report fewer problems.
Expected service life is 10–15 years with low failure rates. It works well even when water quality isn’t perfect.
The Best Irrigation Backflow Device for Smaller Systems
This is a strong irrigation backflow device if your system uses city water and no chemical injection. It works best with small to mid-size sprinklers and lines that match 3/4″ fittings.
It’s also ideal for residential setups like:
- Outdoor faucets
- Hose bibs
- Water lines that run to gardens or side yards
No need for overkill when a unit like this handles the job cleanly and efficiently.
Built for Compliance and Code
This unit checks all the boxes:
- Meets SAE flare fitting requirements
- Passes tough USC testing
- Approved for use across the US and Canada
- Easy to register and tag for inspection
If your city or utility follows UPC or CSA codes, you’re covered.
Price and Value Review
The current Amazon price is $273.20, which is about 26% off the retail tag of $366.99. That puts it in the mid-range for certified DCVAs.
Given the time saved during install and service, this price holds up well. You also get a 3-year warranty from Zurn Wilkins, which adds peace of mind.
Where This Preventer Works Best
Use it for:
- Residential water services
- Small businesses
- Shops or salons
- Dental or pet care spaces
- Light-use fire sprinkler lines (check local code)
It’s not meant for high-hazard or high-flow setups. For that, an RPZ device is better. But for daily protection in clean water systems, this is a reliable fit.
Why It Works for Everyday Use
The Zurn Wilkins backflow preventer offers smart features, fast maintenance, and long-term protection. With its EZSwap core, built-in flush system, and strong certifications, it handles everyday protection without the hassle.
You can find it on Amazon for a solid price. If you’re managing small-scale water lines, this compact valve gives you the confidence to install once and move on.
Perfect for plumbers, property owners, or anyone needing a clean fix to a dirty problem.
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