- 1 - 7th edition No. SS2-8110-0600 High Pressure Service Micro-Flow Control Valves (Rating : ANSI 2500) Model VSM OVERVIEW High-pressure Micro-flow Control Valves (model VSM) are used for control of a small flow. The compact and study valve body is of a forged structure and it is less affected by stress from the pipe. The valve employs a top entry type and parts can be replaced without dismantling the valve from the pipe. Threadconnected valve can be readily disassembled and reassembled without requiring any special tools. ANSI 600 type of valves with identical structure and features also are available. SPECIFICATIONS Body Type Straight-through, forging micro-flow valve Pressure rating ANSI 2500 (at body parts) End connections Threaded end: Rc1/4, Rc1/2, 1/4NPT, 1/2NPT Flanged end : 1/2, 3/4, 1 inch Material Stainless steel (SUS F304 or SUS F316) or other alloy steel Bonnet Plain bonnet (-30 to +400°C) Gland type Screwed gland Packing V shaped PTFE packing or graphite packing Gasket Combination of flat type and spiral wound gaskets, SUS316L PTFE coating (-30 to +200°C), tantalum (+200 to +400°C), SUS316 graphoil Trim Valve plug Cage type, Single seated, Contoured type plug . Equal percentage (%C) . Linear contoured (LC) Material Stainless steel (SUS 316), Stellite, or other alloy steel Connection type Pressure rating Applicable standard RF JIS63K JIS B2210-1984 ANSI Class 900, 1500, 2500 ANSI B16.5-1981 JPI Class 900, 1500, 2500 JPI-7S-15-1993 RJ ANSI Class 900, 1500, 2500 ANSI B16.5-1981 JPI Class 900, 1500, 2500 JPI-7S-15-1993 Actuator Type Multispring type diaphragm motor (model PSK1D, R) Action Direct or reverse action Diaphragm Ethylene propylene rubber reinforced with fabric Spring range 40 to 120 kPa {0.4 to 1.2 kgf/cm2}, 80 to 160 kPa {0.8 to 1.63 kgf/cm2}, 120 to 210 kPa {1.2 to 2.14 kgf/cm2} Air supply pressure 140 kPa {1.4 kgf/cm2}, 270 kPa {2.8 kgf/cm2}, 340 kPa {3.5 kgf/cm2} Air connection Rc1/4 internal thread Ambient temperature -30°C to +70°C Valve action Air-to-close (Direct-action actuator is combined.) Air-to-open (Reverse-action actuator is combined.) Optional accessories Positioner (model AVP smart type electronic, model HEP electronic, model VPE pneumatic) Pressure regulator with filter Limit switch (model VCX) Skinner solenoid valve, and etc. 1 12 Specifications are subject to change without notice. “This product is designed for general industrial use.”