BALL VALVE; NOMINAL SIZE: 1/2 IN; MOUNTING TYPE: BSP S THREADED ACCORDING TO ISO 228-1; BALL MATERIAL: STAINLESS STEEL; BODY MATERIAL: FORGED STAINLESS STEEL; BORE TYPE: FULL; PRESSURE: 1000 WOG; TILTING CENTRAL BODY, STRAIGHT BORE SOLID BALL, FULL OPENING WITH 1/4 TURN, ADJUSTABLE STEM SEAL, WITH TEFLON WASHER. PROTECTIVE STEM, RESILIENT SEATS, CIRCULAR PASSAGE IN BOTH DIRECTIONS, DIMENSIONS ACCORDING TO ASA B-16.11, BS 5351, MSS-SP-72 STANDARDS, MAXIMUM WORKING TEMPERATURE 200°C, SPHERE SURFACE ROUGHNESS 8 MICRONS, SPHERICALITY 0.025 MM; COVER: AISI 316 STAINLESS STEEL, STEM: AISI 316 FORGED STAINLESS STEEL, BOLTS AND NUTS: AISI 316 FORGED STAINLESS STEEL, TEFLON SEATS AND BODY SEAL, MAXIMUM LOAD LOSS 0.14 KGF/CM2 AT 45 L/MIN, MIN. PASSAGE 11.2 MM, MAX. TORQUE 70 KGF/CM; THEY MUST BE DELIVERED COMPLETELY CLEAN AND WITH PLASTIC SEALS ON BOTH CONNECTIONS, HERMETICALLY SEALED AND INDIVIDUALLY PACKAGED IN A POLYETHYLENE BAG, PACKED IN CARDBOARD OR WOODEN BOXES TO AVOID DIRT AND/OR DAMAGE DURING TRANSPORT AND STORAGE; IDENTIFIED WITH THE OXYGEN INSCRIPTION INDELIBLY ENGRAVED ON THE BODY OR ON A PLATE ATTACHED TO THE BODY; THE SUPPLIER MUST PROVIDE QUALITY CERTIFICATES FOR ALL THE COMPONENT MATERIALS OF THE VALVE AND PROOF OF WARRANTY FOR USE WITH OXYGEN. IN ADDITION, AN IDENTIFICATI