Jmp Equipment Company 401485 / No. 78 Water Main Vent

Product Description

The JMP EQUIPMENT COMPANY 401485 / NO. 78 is a water main vent designed for use in water distribution systems. Water main vents allow trapped air to escape from pressurized water lines, preventing air locks that restrict flow and cause pressure fluctuations. This type of component is typically installed at high points in a water main where air naturally accumulates. Installation is performed by licensed plumbers during new construction, system commissioning, or maintenance service on existing water distribution infrastructure.

The 401485 / NO. 78 is suited for residential and light commercial water main applications where air release is required to maintain consistent flow and system pressure. It is installed at system high points or dead-end runs where air pockets are prone to collect. Plumbers working on potable water distribution or irrigation main lines will find this vent applicable to standard air-release scenarios.

Key Features

• Releases trapped air from pressurized water mains to prevent air locks
• Designed for installation at high points in water distribution piping
• Suitable for residential and light commercial water main systems
• OEM-style replacement or new-installation component

Compatibility

Designed as an OEM-style replacement or direct-install component for water main air vent applications in residential and light commercial water distribution systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and depressurize the line before removing or installing any vent component. Ensure the vent is installed at the highest point of the run to allow effective air release. Do not overtighten fittings during installation, as this may damage the vent body or sealing surfaces.

Technical Specifications

• Application: Water Main Air Vent

Standard Information

• Brand: JMP EQUIPMENT COMPANY
• Manufacturer Part Number: 401485 / NO. 78