MEMBRANE CLOSURE VALVES, NAMELY, METAL DIAPHRAGM SHUT OFF VALVES; GAS SUPPLY CONNECTING PIPELINES, NAMELY, METAL HEADER SYSTEMS CONSISTING PRIMARILY OF MANIFOLDS FOR GAS SUPPLY INSTALLATIONS AND SYSTEMS; GAS SUPPLY INSTALLATION EQUIPMENT, NAMELY, SUPPLEMENTARY ARMATURES, AUXILIARY ARMATURES, AND FITTINGS THEREFORE, ALL MADE OF METAL; WELDING SCREW CONNECTIONS, NAMELY, METAL PIPE COUPLINGS

PRESSURE REDUCING VALVES FOR COMPRESSED GAS; GAS SUPPLY SYSTEM VALVES WITH PIPE THREADS AND/OR WELDING SCREW CONNECTIONS FOR USE WITH PIPES AND HEADER SYSTEMS; BELLOW CONTROL VALVES, NAMELY, BELLOW TYPE VALVES AND BELLOW SEAL VALVES; PNEUMATIC VALVES, NAMELY, PNEUMATIC ACTUATED GAS SHUT-OFF VALVES; STUFFING SLEEVE CONTROL VALVES, NAMELY, STUFF BOX TYPE METERING VALVES; SAFETY VALVES FOR RELIEF OF GAS OVERPRESSURE AND OVERFLOW; BACK PRESSURE VALVES, NAMELY, NON RETURN VALVES; QUANTITY METERS, NAMELY, FLOW METERS; BOTTLE CONNECTION DOUBLE VALVES, NAMELY, CYLINDER VALVE AND GAS CYLINDER CONNECTED VALVE COMBINATION FOR PURGING REASONS; WELDING SCREW CONNECTIONS, NAMELY, TUBE WELDED CONNECTION FITTINGS; CONNECTING PIECES, NAMELY, PIPE FITTINGS, TUBE FITTINGS, AND JOINTS AND WELDING SCREW CONNECTION PIECES

SAFETY REGULATORS, NAMELY, GAS PRESSURE REGULATORS; MANOMETERS, CONTACT MANOMETERS, PIEZO-ELECTRIC PRESSURE SENSORS; SIGNAL INSTRUMENTS, NAMELY, PRESSURE GAUGES; ELECTRONIC PRESSURE INDICATOR PANELS, GAS PRESSURE LEVEL MONITORING DEVICES AND SENSORS FOR MONITORING GAS PRESSURE LEVEL VALUES WITH OPTICAL, ACOUSTIC OR ELECTRONIC INDICATION

PRESSURE REDUCING DEVICE, NAMELY, PRESSURE REGULATORS, DEVICE FOR EXPANSION FOR COMPRESSED GASES, NAMELY, REGULATORS, AND DEVICE FOR REDUCTION OF HIGH GAS PRESSURE VALUES TO LOWER ONES, NAMELY, REGULATORS; BATTERY PRESSURE REDUCING DEVICE, NAMELY, PRESSURE REGULATOR MANIFOLD AND GAS SUPPLY PANEL WITH TWO OR MORE CONNECTIONS TO GAS STOCK; STATION PRESSURE REDUCING DEVICES, NAMELY, SINGLE CYLINDER PRESSURE REGULATOR AND GAS SUPPLY PANEL WITH ONE CONNECTION TO GAS STOCK; DISPENSING PRESSURE REDUCING DEVICES, NAMELY, POINT-OF-USE PRESSURE REGULATORS AND PRESSURE REGULATORS WHICH ARE USED AT THE POINT OF USE; LINE PRESSURE REDUCING DEVICES, NAMELY, LINE PRESSURE REGULATORS AND PRESSURE REGULATORS WHICH ARE USED WITHIN TUBE LINES FOR CENTRAL GAS SUPPLY SYSTEMS; BOTTLE PRESSURE REDUCING DEVICES, NAMELY, CYLINDER PRESSURE REGULATORS AND REGULATORS CONNECTED TO THE GAS CYLINDER OUTLET; TABLEAU PRESSURE REDUCING DEVICES, NAMELY, WALL, PANEL OR COUNTER TOP MOUNTED PRESSURE REGULATORS AND PRESSURE REGULATORS MOUNTED ON PANELS WHICH CAN BE MOUNTED ELSEWHERE; GAS SUPPLY SYSTEM CONSOLES, NAMELY, PANELS FOR MOUNTING GAS PRESSURE REDUCING AND REGULATING DEVICE; FILTERS, NAMELY, GAS PURIFICATION PARTICLE FILTERS; BACK PRESSURE VALVES WITH BUILT IN FILTERS, NAMELY, NON-RETURN VALVES WITH GAS PURIFICATION FILTER INTEGRATED; GAS PURIFYING ARMATURES, NAMELY, DOUBLE AND THREE-WAY VALVES, DUAL, TRIPLE OR MULTIPLE PORT VALVE BLOCKS, HOUSING INTEGRATED MULTIPLE VALVE COMBINATIONS, AND PARTS THEREFORE; GAS DISTRIBUTION INSTALLATIONS SUBSTANTIALLY CONSISTING OF THE AFORE-NAMED GOODS; GAS DISTRIBUTION SYSTEMS SUBSTANTIALLY CONSISTING OF AIR PURIFIERS AND GAS REGULATORS