No. SS2-8113-0220 Azbil Corporation - 4 - Note) “ ” denotes production ranges. Note) The above graphs indicate typical flow characteristics. Table 2 Cv value, travel and inherent rangeability Plug type, characteristics / Rated travel (mm) / Rated Cv value 0.01 0.04 0.1 0.16 0.25 0.4 0.63 1.0 1.6 2.5 4.0 6.3 10 14 Contoured type Metal seat Equal percentage (%CF) Linear (LCF) 14.3 Quick-opening type Metal (Stellite) seat (QS) 6.0 Inherent rangeability 20:1 25:1 20:1 30:1 50:1 Connection size (inches) 1/2 3/4 1 Figure 1-1 Equal percentage characteristics (%CF metal seat) Figure 1-2 Linear characteristics (LCF metal seat) Figure 1 Flow characteristics: Contoured type Figure 2 Bellows Type by Temperature and Pressure Ranges Note) Bellows type are classified into Formed bellows type I, II and welded bellows by temperature and pressure ranges. Please refer to No. SS2-BSL100-0100 about detail of bellows specification. Figure 3 Temperature / normal differential pressure range requiring Stellite Note) 1) When cavitation service, oil prohibitive service, or retention of valve-close performance is required, use of Stellite is recommended regardless of temperature or differential pressure. 2) When rated Cv value is 0.16 or lower, Stellite faced valve plugs are standard. 100 50 20 10 5 2 0 20 40 60 80 100 Travel (%) Cv value (%) 100 80 60 40 20 0 0 20 40 60 80 100 Travel (%) Cv value (%) 3 2 1 -50 -30 +300 +350 Maximum pressure(MPa) Welded bellows Formed bellows type II Formed bellows type I Fluid temperature ( C) Stellite 1470 {15} kPa {kgf/cm2} 981 {10} 490 {5} 0 0 +100 +200 +300 Fluid temperature ( C) Constant differential pressure