Sitecna Srl, the Italian manufacturer of pneumatic instrumentation for hazardous and corrosive environments, has released details of the brand new double lock up valve based on the existing LK04 single lockup design. The 316L stainless steel Sitecna LK04SSD double lockup valve is intended for failsafe circuits for double acting pneumatic actuators.
The valve senses the pressure present at the signal port. Providing the pressure is greater than the adjusted setpoint, both circuit valves are open, allowing full control of the actuator. In the event of the pressure dropping below the setpoint, the highly sensitive trip action closes both the valves instantly, trapping the inlet and exhaust pressures of the actuator and preventing any movement of the valve until the signal pressure is restored.
Also available in epoxy coated aluminium, the valves are very compact and ATEX- and GOST-certified as standard.