SMC extended the range of ISO13849-1 compliant residual pressure release safety valves with the addition of the 3-port solenoid valves VP-X555 and X585, designed to be used as components in categories 3 and 4. Both models feature an integrated soft start-up function that gradually builds the pressure of the pneumatic system, delivering performance consistency and excellent safety.
The valves also have two stations, so if one fails to operate, residual pressure is released by the remaining valve, maintaining the machine safety function. Further features of the VP-X555 and VP-X585 include a selectable throttle and fixed orifice that allows pressure to be easily adjusted. In addition, they come with IP65 enclosure protection, a choice of safety limit switches and the ability to connect to modular type FRL units, for maximum flexibility allowing the valves to be used across a broad range of applications. The SMC offering of components compliant to ISO13849-1 also include the single and dual residual pressure release safety valves VP-X536, VP-X583 and VG-X87.