541266

Name: Festo 541266 On/off valve MS4-EM1
Brand: Festo

On/off valve MS4-EM1

The Festo part number 541266 is a direct-controlled, 3/2-way bistable industrial component featuring a rotary vane structural design and manual actuation. It operates within a pressure range of 0 bar to 14 bar, providing a normal nominal flow rate from 1200 l/min to 2200 l/min using compressed air conforming to ISO 8573-1:2010 [7:4:4] or inert gases. This RoHS-compliant unit holds c UL us recognition alongside ATEX and UKEX certifications for explosive atmospheres in Zones 1, 2, 21, and 22. Submit the exact part number, quantity, and application requirements to receive a quote.

Request pricing and availabilityCommercial response within one business day for your destination and required quantity.

Request a Quote

Why no listed price?

Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.

Manufacturer: Festo
Part number: 541266
Data verification: Manufacturer evidence reviewed

For a faster response, include quantity, condition, and delivery destination.

Exact part-number verificationTechnical properties are matched to 541266.

Worldwide sourcingSupport for planned and urgent industrial requirements.

Manufacturer documentationA document is added when the reviewed source provides one.

Verified configuration

Technical Specifications

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
Certication: 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 certication 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

Engineering context

Identification and RFQ Guidance

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.

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.