Waterman 4801000 Air Vacuum Relief Valve 2 Inches

Product Description

The WATERMAN 4801000 is a 2-inch Air/Vacuum Relief Valve designed to protect pipelines and water distribution systems from the damaging effects of air accumulation and negative pressure events. This valve automatically releases trapped air during system startup and admits air to prevent vacuum formation during line draining or sudden pressure drops. It is a critical component in irrigation, water supply, and fluid conveyance systems where proper air management is essential to maintaining flow efficiency and preventing pipe collapse or water hammer. Licensed plumbers and irrigation system technicians are the primary installers of this valve.

The WATERMAN 4801000 suits residential and commercial pipeline applications where air and vacuum relief is required at high points in the system. The AV-150 designation indicates its classification as a combination air/vacuum relief device, making it appropriate for water mains, irrigation headers, and pressurized supply lines. It is installed at system high points where air naturally collects and where vacuum conditions are most likely to develop during system shutdown or line breaks.

Key Features

• 2-inch port size accommodates standard pipeline connections
• Combination air release and vacuum relief function in a single valve body
• Automatic operation requires no manual intervention during system start or shutdown
• AV-150 series design suited for pressurized water distribution and irrigation systems
• Compact form factor allows installation at pipe high points without extensive clearance requirements

Compatibility

Designed as an OEM-style replacement or new-installation air/vacuum relief valve for 2-inch pressurized water supply, irrigation, and fluid conveyance pipeline systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified irrigation technician in accordance with applicable local plumbing codes and IPC guidelines. Depressurize and isolate the pipeline completely before installing or servicing this valve. Mount the valve at the highest point of the pipeline run to ensure effective air and vacuum relief. Do not install in a horizontal orientation unless the manufacturer documentation explicitly permits it.

Technical Specifications

• Connection Size: 2 inches
• Valve Type: Air/Vacuum Relief
• Series: AV-150

Standard Information

• Brand: WATERMAN
• Manufacturer Part Number: 4801000