- 1 - 6th edition No. SS2-8190-0500 BIOBATCH Valves Model VSB OVERVIEW BIOBATCH Valves (Model VSB) have been designed specifically for bio-batch processes, which require highly reliable control valves. The valves offer a “State of the art” high seal feature, which completely prevents the ingression of germs. To prevent the mother liquid being entrapped, settled, and carbonized by the heat of sterilizing steam, the valve body is designed so that it causes no entrapping of liquid and the bellows are designed in sommth wave configuration. The valves are also highly washable. Employing reinforced PTFE seat for the valve plug, the VSB vavles are resistant to heat cycles caused by charging of materials, hot water washing, and steam sterilization. The VSB valves compare very favorably over regular Saunders valves. The overall dimensions and weights of the VSB valves are approximately onehalf of the reqular Saunders valves, substantially economizing the installation spaces and facilitaing installation and maintenance work. SPECIFICATIONS Body Type Globe valve, straight-through bottom-flat type Nominal size 20, 25, 40, 50, 80, 100 mm Pressure rating Maximum working pressure: 490 kPa {5 kgf/cm2} Operating temperature 0 to 200°C End connection Flanged end, RF (JIS B2210-1984) Material SCS13A Bonnet Plain bonnet, glandless type (0 to 200°C) Gasket Flat gasket SUS316 Reinforced PTFE (V7020) Note) PTFE: Polytetrafluoroethylene Trim Type Single seated, quick-opening Seat : Integrated to valve body Bellows :Plug bellows type Externally pressurised, formed, double bellows Material SUS316 (Bellows : SUS316L, Pllug seat : Reinforced PTFE) Actuator Type Single acting diaphragm actuator Action Direct or reverse action Diaphragm Cloth embedded chloroprene rubber Supply pressure 340 kPa {3.5 kgf/cm2} Air connection Rc1/4 internal thread Ambient temperature -30 to +70°C 5 8 Specifications are subject to change without notice. “This product is designed for general industrial use.”