Ross Asia 27 Series Lockout LOX Valve & Soft Start EEZ-ON Safety cat. 1, PL c, pilot valve with manual lockout LOX control

Made in Japan
Manufacturer : Ross Asia
Model : 27 Series Lockout LOX Valve

Valves with Manual Lockout L-O-X ® Control with Soft-Start EEZ-ON ® 27 Series Product Overview

Energy Isolation for Lockout/Tagout (LOTO) – Lockout with Soft-Start

The Lockout L-O-X ® valve is used to block the supply and remove the downstream pressure from the circuit or machine and allow the employee to lockout the pneumatic energy for safe machine access. The shut-off function of the solenoid pilot controlled L-O-X ® valve is the same as that of the manual L-O-X ® valves.

The Soft-Start EEZ-ON ® valve provides gradual re-application of pneumatic energy to prevent rapid equipment movement at startup.

The solenoid pilot controlled valve allows the air supply to be turned on or off by remote electrical control whenever the L-O-X ® handle is in the outward position. Air flows only if the L-O-X ® handle is outward and the solenoid pilot is energized. When the L-O-X ® handle is pushed in, air will not flow regardless of the pilot being energized or not. As with all L-O-X ® valves, the L-O-X ® handle can be padlocked in the closed position. As a further precaution against inadvertent air flow, the solenoid pilot controlled has no manual override.

After energy isolation has been completed the rapid introduction of high pressure can cause motion and unnecessary machine wear or damage. The L-O-X ® valve with soft-start EEZ-ON ® function features all the advantages of the L-O-X ® with the added benefit of causing the pressure to increase gradually allowing for a controlled motion to occur.

VALVE FEATURES

NOTE: Per specifications and regulations, these products are defined as energy isolation devices, NOT AS EMERGENCY STOP DEVICES.

Specifications

PRODUCT CREDENTIALS

Ordering Information

SOLENOID MANUAL LOCKOUT CONTROLLED VALVES WITH SOFT-START(3-Way 2-Position Valves)

MANUAL LOCKOUT CONTROLLED VALVES WITH SOFT-START(3-Way 2-Position Valves)

Valve Operation

Solenoid Manual Lockout Controlled Valves with Soft-Start
L-O-X® Handle Open and Pilot Not Energized	Pilot air is blocked by the pilot. Any downstream pressure forces piston B (which slides on the valve stem) upward. This opens the exhaust port and vents the downstream line.
Full Pressure	When the pressure on piston A reaches approximately 50 percent of inlet pressure, it is forced downward and opens inlet poppet C. Full inlet pressure now flows freely to the outlet port.
L-O-X® Handle Open and Pilot Energized	Pilot air forces piston B downward to close the exhaust port. Pilot air flows past the adjusting needle, opens the ball check and begins slowly to pressurize the outlet line. At the same time, pressure is building up on piston A.
L-O-X® Handle Closed	At any time the L O-X ® handle can be pushed inward, thereby closing off the flow of pilot air. Pilot air above pistons A and B is then vented to atmosphere. Piston A moves upward and closes inlet poppet C. Sliding piston B also moves upward to open the exhaust port and vents the downstream line.

Manual Lockout Controlled Valves with Soft-Start
L-O-X® Handle Open	Pilot air forces piston B downward to close the exhaust port. Pilot air flows past the adjusting needle, opens the ball check and begins slowly to pressurize the outlet line. At the same time, pressure is building up on piston A.
Full Pressure	With a short push of the red handle inward the flow of supply air is blocked and downstream air is exhausted via the exhaust port. Air pressure on the inlet and exhaust poppets produces a large closing force. The L-O-X ® valve should be padlocked in this position to prevent the handle from being pulled outward inadvertently when potential for human injury exists or servicing machinery.
L-O-X ® Valve (Handle) Closed	Pilot air forces piston B downward to close the exhaust port. Pilot air flows past the adjusting needle, opens the ball check and begins slowly to pressurize the outlet line. At the same time, pressure is building up on piston A.