3/8" Watts LFN388 Atmospheric Vacuum Breaker
Item Number: 0792064Brand - Watts
Couldn't load pickup availability
- Lead Free* cast copper silicon alloy body
- Weight: 40.0 lb
- Full size orifice for maximum flow
- Lightweight disc assembly prevents spilling
- Chemical resistant silicone seat disc
- Maximum Operating Temperature: 180°F (82°C)
- Maximum Working Pressure: 125 PSI (8.6 bar)
- Bottom Female NPT inlet and outlet connections
- ASSE Standard 1001 and CSA B64.1.1 compliant
Description
Description
Help Me Connect
Help Me Connect
Connections
- The Watts LFN388 vacuum breaker features bottom inlet and outlet connections.
- Both the inlet and outlet are 3/8 inch Female NPT threads, designed to connect directly to corresponding male NPT threaded piping or equipment.
Usage
This anti-siphon vacuum breaker is intended for non-continuous pressure applications to protect potable water from backsiphonage in low-flow installations. It is NOT for use under continuous pressure or where backpressure may develop.

Collapsible content
Additional Details
The Watts 3/8 inch Series LFN388 Anti-Siphon Vacuum Breaker is engineered to prevent the backsiphonage of contaminated water into the potable water supply. It is ideal for low flow, non-continuous hot or cold water health hazard installations.
This vacuum breaker features Lead Free construction, a full-size orifice for maximum flow, and a durable silicone disc for tight seating and resistance to heat and water hammer shock. It also incorporates a lightweight disc assembly and atmospheric vent to prevent spilling under all flow rates. The LFN388 is suitable for temperatures up to 180°F (82°C) and is ideally recommended for applications that use small amounts of water.
Construction & Features
- Lead Free* cast copper silicon alloy body
- Durable, chemical resistant silicone seat disc with chrome hood
- Full-size orifice assures pipe size capacity and high water flow with minimal pressure loss
- Lightweight disc assembly prevents spilling under all rates of flow
- Designed for hot or cold water applications
- Resistant to high heat and water hammer shock
- Assures tight seating with the lightest contact
Applications
- Laboratory Equipment
- Bottle Washers
- Chemical Dispensers
- Dishwashers
- Photographic Tanks
- Shampoo Sinks
- Soap Dispensers
Important Safety Note: This device is not designed, tested, or approved for use under continuous pressure or where there is a possibility that a backpressure condition may develop. For backpressure protection, install a Reduced Pressure Principle Backflow Preventer.
Specifications
- Brand: Watts
- Product Series: LFN388
- Size: 3/8 inch
- Body Material: Lead Free* cast copper silicon alloy
- Seat Disc Material: Silicone
- Hood Material: Chrome
- Inlet/Outlet Connections: Bottom Inlet and Outlet
- Connection Type: Female NPT
- Maximum Operating Temperature: 180°F (82°C)
- Maximum Working Pressure: 125 PSI (8.6 bar)
Certificates & Approvals
- Lead Free* Compliant (wetted surface contains less than 0.25% lead by weight)
- ASSE Standard 1001
- CSA B64.1.1