- 1 - 6th edition No. SS2-8110-0520 Micro-Flow Control Valves Corrosion Resistant type Model VSP OVERVIEW Model VSP valves employ high performance ceramics, which is highly resistant to corrosion, for their trims. This offers excellent control characteristics. Typical applications include fine control of injection lines of polyalminium chloride, sodium hypochlorite, and other chemicals. The valves are compact and light, and easy to handle and require less installation space. SPECIFICATIONS Body Type: Angle valves, made of plastics, for control of very small flows Nominal size: 10, 15, 20 mm Rating: Max. operating pressure; 981 kPa {10 kgf/cm2} Operating temperature; 0 to 50°C Pressure rating: JIS 5KFF (JIS B2211) JIS 10K RF/FF (JIS B2212-1972) End connection: Flanged end; FF Material: PVC (hard polyvinyl chloride) Gland type: Double-seal screw gland Packing: V-PTFE and fluoric O-ring (double seal structure), resistant to acid and other chemicals Gaskets: Fluoric O-ring , resistant to acid and other chemicals Flow direction: Bottom to side Trims Material of plug and seat High performance ceramics (silicone carbide) Actuator Type: Multi-spring type diaphragm motor (Model VM12D or VM12R) Action: Direct or reverse action Diaphragm: Cloth-chloroprene rubber Spring range: 20 to 98 kPa {0.2 to 1.0 kgf/cm2} Supply air pressure: 140 kPa {1.4 kgf/cm2} Air connections: Rc 1/4 internal thread Ambient temperature: 0 to 60°C Valve action: Air-to-close (Direct-action actuator is combined) Air-to-open (Reverse-action actuator is combined) Positioner (model VPE) Input signal: 20 to 98 kPa {0.2 to 1.0 kgf/cm2} Supply pressure: 140 kPa {1.4 kgf/cm2} Air consumptions: 9 ../min(N) Maximum air flow: 88 ../min(N) Rated travel: 10 mm Travel range adjustment: 120 to 60% F.S. Optional accessories Pressure regulator with filter Model KZ03-2A-A (with 40-mm dia. pressure gauge) Solenoid valve Water-proof or explosion-proof Note) For the optional items, refer to respective catalogs and installation drawings. Performance Rated Cv values: 0.02, 0.05, 0.1, 0.16, 0.25, 0.4 (The VSP valves employ a specific sizing system. Refer to products data sheet No. PD2-811-050.) Flow characteristic: Linear Inherent rangeability: 25 : 1 Allowable differential pressure : 981 kPa {10 kgf/cm2} 981 kPa {10 kgf/cm2} Leakage specification: Leakage less than 0.01% of maximum valve capacity (Leak test: with clean water of normal temperature, at 240 kPa {2.5 kgf/cm2}) Hysteresis error: With positioner; within 1% F.S. Linearity: With positioner; within ±3% F.S. Finish color: Blue (Munsell 10B5/10) or silver, or other specified colors. 1 13 Specifications are subject to change without notice. “This product is designed for general industrial use.”