LOGIC VALVES 1/8″ Or-Gate

Overview: What Is a 1/8″ OR‑Gate Logic Valve?

A pneumatic OR‑gate logic valve, often referred to as a shuttle valve, allows air flow from either of its two input ports to pass to the output port—acting like a logical OR in pneumatic systems

Example: Festo OS‑1/8‑B (Part No. 6681) – Technical Details

One widely used model is the Festo OS‑1/8‑B OR‑gate logic valve, which is G 1/8″ in port size. Here are its specifications:

• Valve Function: OR Gate (shuttle design)

• Port Connections: Three G 1/8 threaded ports (two inputs, one output)

• Flow Capacity: Up to 500 L/min (nominal)

• Operating Pressure Range: Typically 1 to 10 bar (15–150 psi)

• Operating Temperature Range: –10 °C to +60 °C Body Material: Wrought aluminium alloy; seals made of NBR (buna‑N)

• Mounting Style: Panel or through‑hole mounting (two holes in housing)

• Weight: Approximately 45 grams

• Air Quality: Designed for compressed air conforming to ISO 8573‑1:2010 [7:-:-]; can be lubricated (once lubricated, always lubricated)

• Compliance: RoHS-compliant; meets VDMA24364 for paint-wetting impairment substances (PWIS)