Zurn Wilkins 460XL Spill Resistant Pressure Vacuum Breaker (PVB)

Zurn Wilkins 460XL Spill Resistant Pressure Vacuum Breaker (PVB).

Product Overview

The Zurn Wilkins 460XL Spill Resistant Pressure Vacuum Breaker (PVB) is a reliable backflow preventer designed to safeguard potable water supplies from contamination caused by backsiphonage. Engineered for both indoor and outdoor applications, this assembly provides continuous protection under constant pressure conditions, making it ideal for commercial, industrial, and residential use.

A unique spill-resistant diaphragm seals the air inlet during start-up and operation, reducing nuisance water discharge. Built with a durable, low-lead cast bronze body and high-performance elastomers, the 460XL ensures long-term reliability and compliance with the latest lead-free requirements.

Features & Benefits

• Spill-Resistant Design: Prevents unwanted water discharge, making it suitable for indoor use

• Lead-Free Construction: Meets NSF/ANSI/CAN 61 and 372 standards (≤0.25% lead content)

• Heavy-Duty Build: Low-lead cast bronze body with stainless steel springs and FDA-approved elastomers

• High Performance: Rated for maximum working pressure of 150 PSI and water temperature up to 180°F

• Flexible Install Options: Available with threaded, Z-Bite™, or Z-Press™ connections (1/2" – 1")

• Certified & Approved: ASSE® 1056 listed, CSA® B64.1.3 certified, IAPMO® listed, and USC Foundation approved

• Easy Maintenance: Replaceable thermoplastic modular cartridge for quick service

Specifications

• Available Sizes: 3/8", 1/2", 3/4", 1"

• Maximum Working Pressure: 150 PSI

• Maximum Temperature: 180°F

• Hydrostatic Test Pressure: 300 PSI

• Connection Type: Threaded (ANSI B1.20.1), Z-Bite™, or Z-Press™ (1/2"–1")

• Material: Low-lead cast bronze body, stainless steel springs, silicone/Buna elastomers

Installation Tips

• Install with the critical level (CL) mark at least 12" above the highest downstream outlet.

• Ensure adequate clearance for testing, inspection, and maintenance.

• Do not install in areas subject to backpressure — the 460XL is designed for backsiphonage protection only.

• Local plumbing codes take precedence; follow manufacturer’s instructions for safe installation.

FAQs

Q: What does the 460XL protect against?
A: The 460XL prevents contaminated water from siphoning back into the potable water system, protecting public health.

Q: Can it be installed indoors?
A: Yes, its spill-resistant design minimizes water discharge, making it suitable for indoor installations.

Q: What applications is this PVB best for?
A: It’s ideal for irrigation, residential water systems, commercial facilities, and industrial settings requiring backflow prevention.

Q: Is the 460XL lead-free compliant?
A: Yes, it meets NSF/ANSI/CAN 61 and 372 standards with less than 0.25% lead content.