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Compact safety valve sets new standards

05 February 2013

Festo has introduced a new combined soft-start and quick-exhaust safety valve. The MS6-SV-C is said to offer high flow rates in a compact size. As a result, it can vent air in a system quickly and reliably, giving excellent response and performance in an emergency and offering machine builders enhanced safety.

This valve is believed to be the only one on the market that enables machine builders to freely adjust both the air flow and the pressure switching point, to enable optimisation of the system.

The safety valves are suited for medium to low risk systems and have certification up to Performance level C in accordance with DIN EN ISO 13849-1. They have been designed for applications with low switching frequencies, for example venting after emergency-stop buttons or door locks are activated.

Thanks to its soft-start function, unregulated movements by system components are avoided during start-up and the system contains no residual pressure once vented, providing the machine operator with greater safety.

There are two valves in the range, the MS6-SV-C and MS9-SV-C, compatible with either 60mm or 90mm grid size MS series air preparation ranges. The MS6-SV-C has a standard nominal flow rate of up to 5,700 l/min and a venting capacity of up to 7,600 l/min. The MS9-SV-C delivers a higher standard nominal flow rate of up to 16,500 l/min, and venting capacity up to 20,500 l/min.

“The Machinery Directive obliges system manufacturers to carry out risk assessment of the hazard posed by machinery,” explained Steve Sands, product manager at Festo GB. “I am delighted we can offer this new generation of valve which is ideal for applications where space is restricted but a high flow rate is required, and where machine and system manufacturers have to integrate the system venting safety function with a performance level up to C.”


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