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Air Mass Flow Test (Valvelink SNAP ON)


Just trying to understand the Air Mass Flow Test available in PD Diagnostics in Valvelink. It displays the Total Supply and Relay position in its graph. How we can relate this to faulty piston o-ring of the cylinder?

Thanks in advance.



1 Reply

  • Please open VL screen. Go to Diagnostics --> Performance Diagnostics --> Profile --> Flow (Scfh). If you are having Double Acting Actuator, flow rate for top port and bottom port will be displayed. Flow rate should be different (No O'ring leak). Will send you screen shot for better visualization.
    Hope this helps.