Specifications include, but are not limited to: Rental of four (4) GP-55 Cylinder/Tank for liquid oxygen per the following attached specifications. GP-55 CYLINDER/TANK RENTAL WOULD BE MANIFOLDED TOGETHER FOR GAS WITHDRAWAL FROM ALL CYLINDERS AT ONCE. THERE IS APPROXIMATELY 5500 CUBIC FEET OF OXYGEN PER LIQUID CYLINDER/TANK . TANK TO HAVE THE FOLLOWING COMPONENTS: GAS USE VALVE-FOR GAS WITHDRAWAL, FILL LIQUID VALVE-FOR FILLING OR LIQUID WITHDRAWAL OPERATIONS, PRESSURE CONTROL VALVE-TO ISOLATE THE PRESSURE CONTROL REGULATOR, VENT VALVE-TO VENT PRESSURE, COMBINATION PRESSURE CONTROL REGULATOR- TO AUTOMATICALLY CONTROL OPERATING PRESSURE, PRESSURE GAUGE-TO INDICATE CYLINDER PRESSURE, RELIEF VALVE AND RUPTURE DISK, LIQUILD LEVEL GUAGE-TO INDICATE THE LIQUID CONTENTS OF THE CYLINDER.