ROSS Controls 400C79 4-Way Pilot Operated Solenoid Valve

Product Brief Introduction The 400C79 is a 4-way, 2-position pilot-operated solenoid valve from ROSS Controls 400 series. It provides directional control of compressed air for pneumatic cylinders, actuators and process equipment, with reliable shifting performance, long service life and robust construction for industrial pneumatic systems.
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Technical Specifications

Valve type: 4-way 2-position pilot operated solenoid. Port size: 1/2 inch NPT. Flow capacity: 2.0 Cv. Operating pressure: 20 to 150 PSI. Solenoid voltage: 120V AC. Response time: <80ms. Operating temperature range: -10°C to +50°C. Protection rating: IP65.

Functional Features

Pilot-operated design delivers high flow capacity with low solenoid power. Balanced spool construction ensures consistent shifting across pressure range. Die-cast aluminum body provides strength and corrosion resistance. Built-in manual override for testing and commissioning. Spring return design ensures fail-safe position on power loss.

Appli

cation Scenarios

It controls pneumatic cylinders, rotary actuators, clamping devices, conveyor stops and process valves in automotive manufacturing, packaging machinery, material handling systems and general industrial automation.

Performance Parameters

Flow coefficient: 2.0 Cv. Response time: <80ms energize, <100ms de-energize. Minimum operating pressure: 20 PSI. Maximum pressure: 150 PSI. Temperature range: -10°C to +50°C.

Material Composition

Valve body: die-cast aluminum alloy. Spool: hard-anodized aluminum. Seals: nitrile rubber. Solenoid enclosure: zinc-plated steel. Spring: stainless steel.

Structural Characteristics

It features a compact in-line body design, threaded NPT ports, top-mounted solenoid coil, manual override button, and mounting bolt holes.

Working Principle

When the solenoid is energized, the pilot spool shifts to direct control pressure to the main spool end, shifting the main spool to redirect flow between the inlet, cylinder and exhaust ports. When de-energized, the return spring shifts the spool back to the normal position.

Installation Requirements

Install in-line with pneumatic tubing using appropriate thread sealant. Mount in orientation specified in manual for proper operation. Connect solenoid to correct voltage supply. Ensure air supply is filtered and lubricated per specification.

Usage Notes

Do not exceed maximum operating pressure. Filter air supply to 40 micron minimum. Lubricate air supply for extended seal life. Test manual override during commissioning. Replace solenoid coil if failure occurs.




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