Bk 108-904NL Low Lead Backflow Preventer Vacuum Breaker

Product Description

The BK 108-904NL is a low lead backflow preventer vacuum breaker designed to protect potable water supplies from contamination at hose thread outlets. The unit installs directly onto a 3/4 inch hose thread outlet and uses break-off attachment screws that permanently secure the device and resist tampering once installed. This type of vacuum breaker creates an air gap that prevents back-siphonage from drawing contaminated water back into the supply line. It is a standard fitment item for residential and light commercial plumbing applications and is typically installed by licensed plumbers or qualified service technicians.

The 108-904NL is suited for use at outdoor hose bibs, utility faucets, and similar hose thread outlets where backflow protection is required by plumbing code. The 3/4 inch hose thread connection covers the most common residential hose bib configuration. Hose threads on this device comply with ANSI B1.20.7, and the product carries cUPC approval for use in both United States and Canadian installations.

Key Features

• Low lead construction meets regulatory requirements for potable water contact
• Fits 3/4 inch hose thread outlets per ANSI B1.20.7
• Break-off attachment screws provide permanent installation and tamper resistance
• cUPC approved for use in US and Canadian plumbing systems
• Lightweight at 0.167 pounds for easy single-technician installation

Compatibility

Designed as a direct-fit replacement or new-installation vacuum breaker for any standard 3/4 inch hose thread outlet conforming to ANSI B1.20.7, including outdoor hose bibs and utility faucet connections.

Installation Notes

Installation is performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply to the hose bib before installation. Thread the vacuum breaker onto the outlet and apply the break-off screws to secure and lock the device in place. Do not over-tighten the hose thread connection, as this may crack the body of the vacuum breaker.

Technical Specifications

• Connection Size: 3/4 inch hose thread
• Thread Standard: ANSI B1.20.7
• Lead Compliance: Low lead
• Certifications: cUPC approved
• Weight: 0.167 pounds

Standard Information

• Brand: BK
• Manufacturer Part Number: 108-904NL