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Festo
535903
Air solenoid valve MOFH-3-1/8-EX
The Festo part number 535903 is a 26 mm wide electrical 3/2-way monostable open valve featuring a plate seat structural design and a mechanical spring reset method. It delivers a normal nominal flow rate of 500 l/min through a G1/8 pneumatic working port across an operating pressure range of 0.15 MPa to 0.8 MPa (1.5 bar to 8 bar), with operating voltage supplied via a separately ordered solenoid coil. Certified with an IP65 degree of protection, CE and UKCA markings, and ATEX/UK EX compliance for hazardous atmospheres (II 2G Ex h IIC T4 Gb and II 2D Ex h IIIC T130°C Db within an explosive ambient temperature range of -5°C to +40°C), this component has a nominal width of 5 mm and a width dimension of 27 mm. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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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
- 535903
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 535903.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Valve function
- 3/2-way, monostable, open
- Actuation type
- Electrical
- Width
- 26 mm
- Normal nominal ow rate (normalized to DIN 1343)
- 500 l/min
- Pneumatic working port
- G1/8
- Operating voltage
- Via solenoid coil, to be ordered separately
- Operating pressure
- 0.15 MPa...0.8 MPa | 1.5 bar...8 bar
- Structural design
- Plate seat
- Reset method
- Mechanical spring
- CE marking (see declaration of conformity)
- as per EU explosion protection directive (ATEX)
- Explosion protection certication outside the EU
- EPL Db (GB) | EPL Gb (GB)
- UKCA marking (see declaration of conformity)
- acc. to UK EX instructions
- ATEX category gas
- II 2G
- ATEX category for dust
- II 2D
- Type of ignition protection for gas
- Ex h IIC T4 Gb
- Type of (ignition) protection for dust
- Ex h IIIC T130°C Db
- Explosive ambient temperature
- -5°C <= Ta <= +40°C
- Degree of protection
- IP65
- Nominal width
- 5 mm
- Width dimension
- 27 mm
- Exhaust air function
- Adjustable
- Sealing principle
- Soft
- Mounting position
- Any
- Manual override
- Detenting
- Type of control
- Piloted
- Flow direction
- Non-reversible
- Lap
- Negative overlap
- Switching time off
- 29 ms
- On switching time
- 9 ms
- Max. positive test pulse with 0 signal
- 2200 µs
Engineering context
Identification and RFQ Guidance
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 535903. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.