The Superior VPE-1000 can be used for a variety of leak detection and plant maintenance applications. Leak Detection: Air, Vacuum, Refrigerants; ANY GAS! - Steam Traps: Detect live steam loss in seconds! - Valves: Detect/hear internal leakage in check, ball, needle, gate or any type of valve! Diagnose thermal expansion valves in just five minutes! - Bearings: Hear wear and lubrication problems before damage is done! - Electric Arc and Corona: Inspect circuit breakers, relays, and buss bars! Check for corrosion on contacts and proper insulation! - Pneumatics and Hydraulics: Inspect controls, hoses, tools, fittings and internal cylinders with ease! - Vibration: Detect the ultrasonic sound generated by excessive friction! - Fan Belts. The Superior VPE-1000 is perfect for schools, hospitals, hotels, and other large institutional or industrial environments.