Stop compromising system integrity for simplicity. This atmospheric vacuum breaker provides reliable air-gap protection and straightforward installation for commercial plumbing systems, supporting code compliance and minimizing backflow risk in high-use applications. Owners and facility managers benefit from documented performance and a compact form factor that integrates seamlessly into existing sink and faucet assemblies.
LongDescription#@#NA#@@#Cleaning Instructions#@#Unplug equipment before cleaning. Remove debris and use a mild detergent with warm water and a soft cloth. Scrub grease from ovens, vents, and filters; rinse and dry thoroughly. Clean condenser coils and refrigeration fins for efficiency. Sanitize food-contact surfaces with an FDA-approved sanitizer and rinse as needed. Inspect seals and replace worn parts. Maintain a regular cleaning schedule to prevent contamination, fires, higher bills, breakdowns, and failed inspections.#@@#Additional Info#@#Fisher 3990 1/2" M Inlet Atmospheric Vacuum Breaker prevents backflow in plumbing by interrupting siphonage; it installs on 1/2" male threads, weighs 3.5 pounds, meets CSA standards, and suits foodservice and institutional use.#@@#General Info#@#Description #@#
Stop compromising system integrity for simplicity. This atmospheric vacuum breaker provides reliable air-gap protection and straightforward installation for commercial plumbing systems, supporting code compliance and minimizing backflow risk in high-use applications. Owners and facility managers benefit from documented performance and a compact form factor that integrates seamlessly into existing sink and faucet assemblies.
#@@# Inlet Size#@#
The unit features a 1/2" male inlet to fit standard supply lines, allowing direct connection without adapters in most installations. Installers enjoy reduced labor time and fewer leak points when aligning with common plumbing dimensions.
#@@# Atmospheric Protection#@#
The device utilizes an atmospheric vent to prevent back-siphonage by admitting air during negative pressure events, maintaining system integrity under fluctuating flow conditions. Engineers depend on this passive operation to safeguard potable lines without requiring external power.
#@@# Durable Construction#@#
Manufacturers specify corrosion-resistant materials suitable for commercial kitchens and institutional settings, ensuring a long service life under frequent temperature and moisture cycles. Maintenance teams conserve resources since the assembly resists routine wear and requires minimal replacement.
#@@# Compact Footprint#@#
The compact profile minimizes space at the sink or faucet connection, allowing placement in tight under-sink compartments or within service counters. Facility planners can preserve cabinet space for other equipment while maintaining necessary protection.
#@@# Code Compliance#@#
The assembly meets common plumbing prevention standards and simplifies inspections by providing visible, recognizable backflow protection. Compliance officers appreciate the clear, purpose-driven design that aligns with typical regulatory language.
#@@#Delivery Details#@#
• Please ensure to handle the product with utmost care.
• Check if the product you have received has all the essential parts and accessories.
• Make sure to examine the product for damage before signing the delivery receipt.
• Contact customer service for delivery concerns.
• Delivery times may vary based on location.#@@#deliverynotes#@#NA#@@#Maintenance Guide#@#Inspect the Fisher 3990 1/2" M Inlet Atmospheric Vacuum Breaker monthly for mineral buildup and physical damage. Remove the unit and flush with potable water; soak in a 1:1 vinegar solution for ten minutes to dissolve scale when needed. Replace elastomers annually or when seal integrity declines. Torque inlet fittings to manufacturer specifications and verify downstream valves operate without backflow. Document service dates and parts used for compliance with CSA and internal records.