Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
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Festo
541266
On/off valve MS4-EM1
Festo On/off valve MS4-EM1, part number 541266, is documented in the official Festo United States product data sheet. Review the technical specifications and operating conditions below when requesting a quotation.
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Request a Quote- Manufacturer
- Festo
- Part number
- 541266
- Data verification
- Manufacturer evidence reviewed
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Verified configuration
Technical Specifications
Identification and family-level technical context are preserved from reviewed source evidence and official English-language manufacturer documentation.
- Structural design
- Rotary vane
- Actuation type
- Manual
- Exhaust air function
- Cannot be throttled
- Type of control
- directly
- Valve function
- 3/2-way, bistable
- Pressure gauge
- Set up for G1/4 | Set up for G1/8 | With pressure sensor | with pressure gauge
- Operating pressure
- 0 bar...14 bar
- Normal nominal ow rate (normalized to DIN 1343)
- 1200 l/min...2200 l/min
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:4:4] | Inert gases
- Information on operating and pilot media
- Operation with oil lubrication possible (required for further use)
- Corrosion resistance class (CRC)
- 2 - Moderate corrosion stress
- Note on materials
- RoHS compliant
- LABS (PWIS) conformity
- VDMA24364-B1/B2-L
- Temperature of medium
- -10 °C...60 °C
- Ambient temperature
- -10 °C...60 °C
- Certication
- c UL us - recognized (OL)
- CE marking (see declaration of conformity)
- as per EU explosion protection directive (ATEX)
- UKCA marking (see declaration of conformity)
- acc. to UK EX instructions
- Explosion protection certication outside the EU
- EPL Db (GB) | EPL Gb (GB)
- Explosion prevention and protection
- Zone 1 (ATEX) | Zone 1 (UKEX) | Zone 2 (ATEX) | Zone 21 (ATEX) | Zone 21 (UKEX) | Zone 22 (ATEX)
- ATEX category gas
- II 2G
- ATEX category for dust
- II 2D
- Type of ignition protection for gas
- Ex h IIC T6 Gb X
- Type of (ignition) protection for dust
- Ex h IIIC T60°C Db X
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What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 541266. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.