Apparatus and instruments for tightness testing, pressure testing and leak detection

SYSTEMS FOR DETECTION OF FLUID LEAKS IN PIPES, PNEUMATIC VALVES, HEAT EXCHANGERS, PNEUMATIC CYLINDERS, HYDRAULIC CYLINDERS AND THE LIKE COMPRISING ONE OR MORE COMPONENTS-NAMELY, GAS AND/OR LIQUID PRESSURE AND PRESSURE CHANGE DETECTORS; MANUALLY MANIPULATED ELECTRONIC TRACER GAS SENSORS; ELECTRO-MECHANICAL CONTROL SYSTEMS FOR CONTROLLING GAS AND LIQUID FLOW; ACCESSORIES FOR THE FOREGOING-NAMELY, PRESSURE GAUGES, ELECTRIC PRESSURE INDICATOR LAMPS; TEST STANDS FOR HOLDING MANUALLY, HYDRAULICALLY...