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GENERALE GENERAL CATALOGUE - Szele-Tech Bt.

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ART. 529Valvola a sfera in acciaio al carbonio in 3 pezzi 2vie filettata o da saldare - passaggio integrale2-way full-bore three piece carbon steel ballvalve, threaded-ends or butt weldEsecuzioni standard:Costruita in 3 pezzi per facilitare l’intervento su impianti ad altafrequenza di manutenzione.Estremità: filettate femmina a norma UNI/ISO 7/1 Rp; a saldare ditesta; da sadare di tasca.Guarnizioni standard della sfera in PTFE vergine.Temperatura di utilizzo: da -20°C a + 180°CPressione di utilizzo: vedi diagramma.Fluido intercettato: aria, acqua, gas, prodotti petroliferi e petrolchimici.Conforme alla direttiva Europea 97/23 EC “PED”Standard executions:Manufactured in three pieces to facilitate replacement on plantswhich requires frequent maintenance.Ends: female threads as per UNI/ISO 7/1 Rp; pocket welding; buttwelding.Standard seals: PTFE.Working temperature: from -20°C to +180°CWorking pressure: see diagram.Fluid range: air, water, gas, petroleum and petrochemical products.According to 97/23 EC “PED”bar706050DN 8 ÷ DN 50diagramma pressione/temperaturaCorpo valvola Valve bodyV640302010pressure/temperature diagram-20 0 +25 +50 +75 +100 +125 +150 °CBar10,80,60,4portata/perdita di carico e coefficiente nominale KvIl valore Kv è il valore indice in m 3 /h (con acqua a 15°C) cheprovoca la caduta di pressione di 1 bar0,20,11 2 4 6 8 10 20 40 60 80 100 200 400 600 10001/4” - Kv = 6,53/8” - Kv = 111/2” - Kv = 203/4” - Kv = 601” - Kv = 1001”1/4 - Kv = 1301”1/2 - Kv = 1702” - Kv = 280mc/hflow-pressure diagram loss and Kvnominal coefficient.Kv is the coefficient, expressed in m 3 /h (with water at 15°C)causing a pressure loss of 1 bar.V6.29

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