KSB will be showcasing the latest addition to its control valve range at Achema 2009: the new BOA-CVE H series. These control valves have been built for use in all industrial applications which require liquid flows to be regulated. As the valve can be dismantled without any special tools by undoing the bonnet bolts, the user can replace the valve’s trim and match it to different control requirements as needed. A variety of different valve seat and plug diameters covering the entire range of nominal diameters is available to support replacement. The seat has been designed so that both sides can be used. Stem sealing on standard variants is ensured by a maintenance-free PTFE cup-seal type gland packing supported by a spring. Graphite gland packings are used for high temperatures (> 250C). The pressure relief system for valves from size DN 80, which is available on request, allows small actuators to be used. The actuator range includes both electric and pneumatic actuator types. The widely used electric actuators offer input and output signals from 0/2 to 10 V or 0/4 to 20mA. In addition, Open/Stop/Closed actuation for straightforward control applications is also available. The actuators can be ordered in 24V or 230V versions. The maximum actuating force of the actuators on offer in four different sizes is 14,000 Newton. The pneumatic diaphragm actuators, which come in three sizes, have a maximum actuating force of 20,700 Newton. A comprehensive accessories programme is available for the diaphragm actuators (e.g. positioner, solenoid valves, etc.). BOA-CVE H is made of nodular cast iron (JS1025). Nominal sizes range from DN 20 to 150; nominal pressure classes are PN 16 and 25.
