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Lead Free* Hot or Cold Water Anti-Siphon Vacuum Breakers

Series LFN388 represents a line of vacuum breakers designed to prevent backsiphonage of contaminated water into the potable water supply. The LFN388 features Lead Free* construction to comply with Lead Free* installation requirements. They feature a lightweight, durable disc float suitable for temperatures up to 180 degreeF (82 degreeC) which closes the atmospheric vent to prevent spilling under all rates of flow. They are ideally recommended for low flow installations such as laboratory equipment which use small amounts of water. They also contain a durable silicone disc which has high heat and water hammer shock resistance and assures tight seating with the lightest of seating contact. Maximum Pressure:125psi (8.6 bar).


  • Lightweight disc assembly prevents spilling under all flow rates
  • Durable silicone disc has high heat and water hammer shock resistance
  • Lead-free* cast copper silicon alloy body
  • Full-size orifice assures pipe size capacity for maximum flow

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific LFN388

Approval Information

For approval information, please refer to the products specification sheet. For any other information on product certification and documentation information, please visit our certification partner websites: