MNPT = Male National Pipe Thread
1 1/2″ and 2″ inlet valves are aluminum with a spring loaded self closing cover.
2 1/2″ to 6″ vacuum inlet valves features a Sch. 40 body, machined inside, with 11 Gauge spring loaded steel plate, painted. Inlet Valves have a large palm plate to assist opening under high vacuum.
| Part No. | Hose Size | MNPT |
|---|---|---|
| VC-150 | 1 1/2 | 2 |
| VC-180 | 1.8 (Spencer) | 2 |
| VC-200 | 2 | 2 |
| VC-250 | 2 1/2 | 2 1/2 |
| VC-300 | 3 | 3 |
| VC-400 | 4 | 4 |
Self closing vacuum inlet valves are typically installed at the end of a vacuum piping run. These valves allow an operator to connect a vacuum hose to the central vacuum system by opening the self-closing flap on the inlet valve. The operator can then insert a vacuum hose equipped with a tapered inlet adapter into the valve. The tapered adapter is designed to create a secure friction fit, ensuring a reliable connection during operation.
Once connected, all vacuum airflow passes through the inlet valve, allowing the operator to perform cleanup tasks such as removing dust, debris, spills, and other materials. When the cleaning operation is complete, the hose can be disconnected by simply removing the tapered adapter from the valve. The spring-loaded flap automatically returns to the closed position and seals against an integrated gasket, preventing vacuum loss and maintaining system efficiency.
Self closing vacuum inlet valves are also available with an optional electrical switch. When the valve is opened, the switch closes and sends an electrical signal to a motor starter or control panel, automatically starting the vacuum producer. When the hose is disconnected and the valve closes, the electrical contact opens, allowing the vacuum system to shut down automatically. This feature helps reduce energy consumption and simplifies operation by ensuring the vacuum system only runs when needed.
If the part number includes the suffix E, the valve is equipped with the electrical switch option and is classified as an electrical self closing vacuum inlet valve.
Industrial vacuum inlet valves provide a convenient connection point for operators using a central vacuum cleaning system. Installed throughout manufacturing facilities, warehouses, processing plants, and industrial environments, these valves allow vacuum hoses to be connected quickly and efficiently wherever cleanup is required. By strategically placing vacuum inlet valves throughout a piping network, operators can access vacuum power without moving portable vacuum equipment from location to location.
Self closing vacuum inlet valves are designed to maintain vacuum system performance when not in use. The spring-loaded cover automatically returns to the closed position when the hose adapter is removed, helping prevent air leakage and unnecessary vacuum loss. Integrated gasket seals create a tight closure that supports efficient system operation and helps maintain proper vacuum levels throughout the piping system.
Available in sizes ranging from 1-1/2 inch through 6 inch diameters, industrial vacuum inlet valves are suitable for a wide variety of central vacuum and industrial housekeeping applications. Smaller aluminum models offer lightweight construction and corrosion resistance, while larger steel-body valves provide the strength and durability required for demanding industrial environments. Larger inlet valves feature a palm plate design that allows operators to easily open the valve even when the system is operating under high vacuum conditions.
Electric self closing vacuum inlet valves are also available for automated vacuum system operation. These models incorporate an electrical switch that activates when the valve is opened. The switch can be connected to a motor starter or control panel, allowing the vacuum producer to start automatically when a hose is connected. Once the hose is removed and the valve closes, the electrical signal is interrupted, allowing the vacuum system to shut down automatically. This feature helps reduce energy consumption while simplifying system operation.