Festo Introduces an Innovative Series of Pneumatic Safety Valves – the MS6-SV and MS9-SV

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These compact valves can be mounted either as stand-alone units or incorporated with Festo air preparation systems – combining safety with peak pneumatic performance and long equipment service life.


For safety conscious OEMs and end users looking for an ISO certified safety valve, the MS6-SV in c and e level units and MS9-SV in a c level unit will provide an ideal, cost effective solution

Festo today introduced the MS6-SV and MS9-SV safety valves. These safety valves offer many features, including compact size, soft start functionality, and advantageous price versus performance ratio. The MS6-SV is available in Performance Level c and e units; the MS9-SV is available in a Performance Level c unit.

Both the MS6-SV and MS9-SV have integrated soft start and exhaust functions in a compact unified body. OEMs and end users have the flexibility of mounting these safety valves as stand-alone units or as a component of the modular Festo MS air preparation system.     

The MS6-SV-E series is certified to the DIN ISO 13849-1 safety standard – category 4, performance level e. This valve has an extremely high exhaust rate for its size – 9,000 l/min from P2 to P3. The valve delivers continuous testing and sensing of the safety function.

The MS6-SV-E-ASIS valve option has an integrated network connection to AS-Interface Safety at Work, which eliminates the need for an additional safety relay. The ASIS valve option includes switching status sensing and diagnostic functions. The input and output pressures P1 and P2 are internally monitored and can be read via the AS-Interface bus.

C-level safety valves

The MS6-SV-C and MS9-SV-C are ideal for applications with performance level c safety requirements. The c series valves are reliable, cost-effective, single channel safety units designed to enable fast safety exhaust.

Flow rates for the MS6-SV-C used for station level safety:

  •     P1 > P2 5,700 l/min
  •     P2 > P3 7,600 l/min

Flow rate for the MS9-SV-C applied at the machine level:

  •     P1 > P2 15,500 l/min
  •     P2 > P3 20,500 l/min

Both have adjustable pressure ramp-up rate and switching point.

“For safety conscious OEMs and end users looking for an ISO certified safety valve, the MS6-SV in c and e level units and MS9-SV in a c level unit will provide an ideal, cost effective solution,” said Michael Guelker, product manager, Festo. “The degree of engineering and manufacturing excellence that went into these units is phenomenal. This series sets a new standard for pneumatic system safety, flexibility, and price versus performance.”

Mount with the Festo MS series air preparation units

The Festo MS air preparation series combines all of the standard functions of air preparation with additional options for pressure regulators, filters, dryers, sensors, lubricators, and safety with the MS6 and MS9 safety valves. The MS air preparation series includes function modules with integrated sensors, remote adjustability, and remote-controlled pressure monitoring for maximum process security.

For more information about the MS6-SV and MS9-SV safety valves call Festo at 800-993-3786 and visit http://www.festo.com/us.


About Festo    
Festo is a leading manufacturer of pneumatic and electromechanical systems, components, and controls for process and industrial automation. For more than 40 years, Festo Corporation has continuously elevated the state of manufacturing with innovations and optimized motion control solutions that deliver higher performing, more profitable automated manufacturing and processing equipment.

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