Why Your Airtac 4V210-08 is Leaking from Exhaust Ports

Troubleshooting: Air Leaks in 4V210-08 Exhaust Ports

Is air constantly blowing out of the R or S ports of your Airtac 4V210-08? This is a common but fixable issue.

3 Potential Causes

• Worn Spool Seals: After millions of cycles, the O-rings may fail. Replace the seal kit to restore performance.
• Internal Debris: A tiny piece of metal or plastic can prevent the spool from sealing fully.
• Low Air Pressure: If the pilot pressure is below 0.15MPa, the valve can sit in a "half-shifted" state, causing leaks.

Regular maintenance and proper 40-micron filtration are the best ways to prevent these leaks from happening.