Prevost Electrically Operated Pressure Release Valve

Description

Prevost ALTO (ATU) Electrically Operated Shut-Off Valve

Automated Safety & Remote Control for Your Pneumatic Network

Integrate your compressed air supply directly into your machine control logic with the Prevost ALTO (ATU) Electrically Operated Shut-Off Valve. Unlike manual valves that require physical operator intervention, this solenoid-actuated module allows for the remote starting or stopping of the air supply via a PLC, switch, or emergency stop circuit.

Designed as a critical safety component, this 3-way valve functions as a “dump” valve. When de-energized (or triggered), it instantly cuts the upstream supply and exhausts the downstream pressure to the atmosphere. This ensures that when your machine is turned off or an E-Stop is hit, all pneumatic energy is neutralized, preventing dangerous cylinder movement and ensuring a safe “Zero Energy” state.

Key Features & Benefits

• Remote Electrical Actuation: Allows the air supply to be controlled by a central PLC, timer, or remote switch, ideal for automated manufacturing lines.
• Failsafe “Dump” Function: Standard configuration is typically Normally Closed (NC)—meaning if the power fails or is cut by an E-Stop, the valve automatically closes the supply and vents the system pressure for safety.
• Modular ALTO Compatibility: Designed to clamp seamlessly into any Prevost ALTO FRL assembly, sitting alongside filters and regulators without the need for complex pipe nipples or adapters.
• Manual Override: Equipped with a manual override button/screw, allowing maintenance technicians to manually actuate the valve for testing or troubleshooting without electrical power.
• Energy Savings: Can be programmed to automatically shut off air to idle machines during breaks or off-shifts, eliminating leaks and reducing compressor energy costs.

Technical Specifications

Ideal Applications

• Emergency Stop Integration: Wiring the valve into the machine’s E-Stop loop to dump air instantly when the button is pressed.
• Automated Cells: Allowing a robot or PLC to turn on its own air supply only when ready to work.
• Remote Locations: Controlling air supply to equipment located in hard-to-reach areas or hazardous zones.
• Shift Timers: Automatically cutting air to the plant floor at the end of the working day to prevent overnight leakage.

Installation Note: This valve requires a Solenoid Coil and Connector (DIN plug) to function. Please check if your specific part number includes the coil or if it must be ordered separately to match your site’s voltage (e.g., 24V vs 120V).