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Pressure / Temperature (Contd.)Selection Chart for Vapors, Gases and Liquids<strong>1900</strong> and <strong>1900</strong>-30 <strong>Series</strong>, N Orifice - API Area: 4.340 in 2 . (28.000 cm 2 )Tungstenor <strong>Inc</strong>onelSteel SpringsAlloySteelSpringsStainlessSpring1,0009008007006005004003002001000-100-200-300-400-4501920Nt 1922Nt 1924Nt1906Nt1914Nt1910Nt 1912Nt1905Nt1906Nc1905Nc 1910Nc 1912Nc1905N/L11906N/L11910N/L1 1912N/L11910N/L2 1912N/L21905N/L21906N/L21905N/L31906N/L31910N/L3 1912N/L30 200 400 600 800 1000SET PRESSURE - lbs./Sq. in.INLET TEMPERATURE °F<strong>1900</strong> <strong>Series</strong> Safety Relief <strong>Valve</strong> | <strong>1900</strong>.81