Azbil Corporation No. SS2-HDT110-0100 - 3 - Table 3 Body / trim material combinations and operating temperature ranges (°C) Body Material Trim material JIS SCPH2 SCS 13A SCS 14A ASTM A216WCB A351 CF8 A351 CF8M JIS SCS316 (SUS14) 0 to 300 0 to 300 0 to 300 JIS SUS316L (SCS16A) 0 to 300 0 to 300 JIS SUS316 Stellite (SCS14 Stellite) 0 to 425 0 to 425* 0 to 425* JIS SUS316L Stellite (SCS16A Stellite) 0 to 425* 0 to 425* Note) 1. “ “ shows standard combination of valve body and trim materials. 2. When the high pressure gas control regulation is applicable, the maximum operating temperature of materials marked with an asterisk is up to 350°C. Figure 1 Temperature / normal differential pressure ranges requiring stellite Figure 2 Flow characteristics Note) When cavitation, flushing service, oil free treatment service, or retention of valve closing performance is required, stellite is recommended regardless of temperature and differential pressure. Note) This graph indicates ideal flow rate characteristics. Table 4 Flow rate characteristics and flow direction service Flow rate characteristics Actuator Valve action Flow direction Diverting Characteristics (1) : AB..B Direct action Figure 3. a AB..A Characteristics (2) : AB..A Reverse action Figure 3. b AB..B HDT diverting service a. Valve with direct-action actuator (Air fail bottom close) b. Valve with reverse-action actuator (Air fail bottom open) Figure 3 Valve action Stellite range 1470 {15} 981 {10} 490 {5} 0 -17 0 +100 +200 +300 Normal differential pressure kPa {kgf/cm2 } Fluid temperature ( C) 100 80 60 40 20 0 20 40 60 80 100 Travel (%) Cv value (%) Characteristics (1) Characteristics (2) 4 7