Overview
The Festo MS6-SV-1/2-D-10V24P-2M12-SO-AG is an electro-pneumatic soft-start and quick exhaust valve designed for gradual pressurization and rapid venting of system components. Built to ISO 13849-1 Category 3, PLd SIL 3 safety standards, this valve features a piston seat design with soft sealing and integrated pilot air supply, making it ideal for applications requiring controlled system startup and protection against unexpected pressurization.
Key Features
- 3/2-way normally closed (NC) solenoid valve with monostable (spring-return) operation
- High flow capacity of 4,300 LPM in main flow direction (port 1 to 2)
- 24 VDC solenoid coil with two 2-pin M12 input connectors and integrated 0.3 m pre-wired cable
- Two PNP digital outputs (normally open) on 2-pin M12 connectors for signal feedback
- Pilot-operated piston seat valve with soft sealing and internal pilot air
- G1/2″ (female) threaded ports 1 & 2, G1″ (female) threaded port 3 (exhaust)
- Die-cast aluminum body with NBR seals; IP65 rating for industrial environments
- Rated for 3.5–10 bar pressure range; operating temperature –10°C to +50°C
- Integrated MS bar pressure gauge option and silencer for exhaust noise
- In-line installation mounting with compact 62 mm grid dimension
Technical Specifications
| Manufacturer Part Number | MS6-SV-1/2-D-10V24P-2M12-SO-AG |
| Festo Reference | 8038491 |
| Valve Type | 3/2-way Solenoid Valve (Normally Closed) |
| Series | MS (Size 6) |
| Function | Soft-start / Quick Exhaust |
| Control Voltage | 24 VDC |
| Flow Rating | 4,300 LPM (port 1 to 2) |
| Pressure Range | 3.5 to 10 bar |
| Pneumatic Ports | G1/2″ (ports 1, 2) & G1″ (port 3) |
| Electrical Connectors | 2 × M12 2-pin inputs + 2 × M12 3-pin outputs (pre-wired 0.3 m cable) |
| Sealing Type | Soft sealing, piston seat |
| Housing Material | Die-cast aluminum with NBR seals |
| Safety Rating | PLd SIL 3, Category 3 (ISO 13849-1) |
| Operating Temperature | –10°C to +50°C (compressed air per ISO 8573-1) |
| IP Rating | IP65 |
| Mounting | In-line installation |
| Grid Dimension | 62 mm |
Typical Applications
- Controlled startup of pneumatic presses, actuators, and cylinders to prevent shock loads
- Safety-critical systems requiring SIL 3 certification (machine guarding, emergency stop circuits)
- Rapid venting and exhausting of system pressure for quick depressurization
- Industrial automation lines with high flow rate demands (conveyors, assembly equipment)
- Pneumatic braking and clamping applications with gradual pressure buildup
- OEM machinery requiring modular M12 connector integration and sealed outdoor operation
Compatibility & Replacements
Compatible With
- Festo modular MS valve series and manifold systems
- 24 VDC industrial control systems with M12 A-coded connectors
- ISO 13849-1 safety control architectures (Category 3, PLd)
- Compressed air systems operating per ISO 8573-1/2010 [7;4;4]
- IP65-rated outdoor and washdown industrial environments
Replaces / Drop-In Replacement For
- Earlier MS6-SV valve variants with different connector configurations
- Festo equivalent part numbers with G1/2 and G1 threaded ports
Works With
- Festo PLCOPEN/IEC 61131 pneumatic control libraries
- M12 A-coded industrial connectors and pre-wired harnesses
- PLC and safety relay systems supporting 24 VDC solenoid control
- Festo pilot air supply and pressure monitoring systems
- ISO 13849-1 safety architecture validation tools
