Zurn Wilkins 1-1/2" 350 DCVA Double Check Backflow Preventer.

Product Overview

The Zurn Wilkins 1-1/2" Model 350 Double Check Valve Assembly is designed to safeguard water systems against low-hazard contamination in non-potable applications. Built with a reinforced nylon body and stainless-steel hardware, this unit offers reliable protection and long service life. The EZSwap™ pressure vessel allows for quick flushing, winterization, and off-line maintenance, keeping systems running efficiently.

Features & Benefits

• Backflow Prevention – Protects against backsiphonage and backpressure in low-hazard applications.

• EZSwap™ Pressure Vessel – Provides easy access for maintenance and winterization.

• Durable Materials – Nylon housing and stainless-steel hardware resist corrosion and wear.

• Fast Maintenance – Checks accessible without removing valve from pipeline.

• Industry Certifications – ASSE®, CSA®, IAPMO®, and AWWA approved.

Specifications

• Model: Zurn Wilkins 350

• Size: 1-1/2"

• Body Material: Reinforced Nylon

• Elastomers: FDA-approved silicone & Buna-N

• Springs & Internals: Stainless Steel / Delrin

• Max Working Pressure: 175 PSI

• Max Temperature: 180°F

• Hydrostatic Test Pressure: 350 PSI

• End Connection: Threaded ANSI B1.20.1

• Weight: 20 lbs (with ball valves)

Installation Tips

• Install 12"–30" above ground with proper drainage.

• Provide side clearance for testing and maintenance.

• If below grade, ensure proper drainage to prevent flooding.

• Use winterization fittings to avoid freeze damage.

FAQs

Q: Is the 1-1/2" size used in residential or commercial settings?
Primarily commercial and light industrial, but may also be used in larger residential irrigation systems.

Q: Can it handle high pressure?
Yes, rated up to 175 PSI with hydrostatic testing to 350 PSI.