Failure Analysis: The Technical Root Causes of Solenoid Coil BurnoutDiagnose solenoid coil burnout by separating 4 coil architectures and checking voltage, current, duty rating, heat, moisture, connectors, and core movement.→Blog Author
Eric Zhou
Hello, I'm Eric, a Bepto Pneumatic control systems engineer. I help connect valve, FRL, CAD, and machine-control requirements with practical pneumatic component choices.
Author Reading Path
Articles by Eric Zhou
164 articles sorted newest first for readers who want one author's pneumatic selection notes in one place.
Spool vs. Poppet: A Deeper Dive into Sealing and Flow Path DynamicsCompare spool and poppet valves through 5 engineering checks: seal interface, metering area, pressure balance, crossover, and ISO 6358 flow data for selection.→
How Do Electromagnetic Drives Work in Pneumatic Valve Applications?Learn how electromagnetic drives switch pneumatic valves, from coil current and pull-in force to peak-and-hold control, flyback, heat, and diagnostics.→
The Engineering Behind Glandless Spool Valve TechnologyUnderstand glandless spool-and-sleeve valves using Norgren 900 vs 1,200 L/min data, air-quality limits, leakage tradeoffs, and selection checks for engineers.→
How Spool Underlap, Overlap, and Zero-Lap Affect Cylinder ControlCompare 3 spool-lap conditions, separate lap from valve center function, and learn how neutral leakage, dead zone, feedback, and load affect cylinder control.→
A Technical Guide to Pneumatic Valve Seal Materials (NBR, FKM, HNBR) and Chemical CompatibilityCompare NBR, HNBR, and FKM valve seals using 8 operating inputs, official test methods, and model-level validation before approving a compound.→
Failure Analysis: The Physics of Spool Stiction and Varnish BuildupDiagnose spool valve stiction by separating electrical, pilot, exhaust, mechanical, water, particle, lubricant, and varnish-like deposit causes.→
What Is a Pneumatic Valve Armature and How Does It Control Your Airflow?Learn how three basic solenoid-valve components turn coil current into armature motion, pilot action, port switching, airflow, and practical fault diagnosis.→
The Physics of Airflow Through Different Valve Orifice GeometriesLearn how 4 orifice geometries change separation, discharge coefficient, choking, and valve flow, with ISO 6358 data, equations, and inspection rules.→