Introduction to JMFH-5-1/8-B-EX FESTO　Solenoid Valve

The FESTO JMFH-5-1/8-B-EX solenoid valve is designed to meet stringent industrial requirements, offering reliable performance in hazardous environments. Let’s explore its features and specifications in detail:

Valve Functionality

• Type: 5/2-way double solenoid valve.
• Drive: Electrically controlled.
• Width: 26 mm.

Performance Specifications

• Standard Rated Flow (according to DIN 1343): 1000 l/min.
• Operating Air Ports: G1/8.
• Operating Pressure: 0.2 MPa … 1 MPa (2 bar … 10 bar).
• Structure: Piston spool valve.

Certifications and Compliance

• CE Certification: Compliant with European safety standards.
• ATEX Directive: Certified for explosive atmospheres.
  • Gas Category: II 2G.
  • Dust Category: II 2D.
  • Explosion Protection:
    • Gas Explosion Protection: Ex h IIC T4 Gb.
    • Dust Explosion Protection: Ex h IIIC T130°C Db.
• Temperature Range for Explosive Atmospheres: -5°C <= Ta <= +40°C.
• Protection Rating: IP65.
• Nominal Diameter: 8 mm.
• Grid Size: 27 mm.

Design and Features

• Sealing Principle: Soft seal.
• Installation Position: Optional.
• Manual Control Device: Button type.
• Pilot Type: Pilot operated.
• Pilot Air Source: Internal pilot.
• Flow Direction: Non-reversible.
• Symbol: 00991013.
• Overlap: Positive overlap.
• Maximum Switching Frequency: 3 Hz.
• Reverse Switching Time: 12 ms.
• Maximum Positive Test Pulse for Signal 0: 2200 µs.
• Maximum Negative Test Pulse for Signal 1: 3700 µs.

Additional Specifications

• Explosion Protection Zones: 1 (ATEX), 1 (UKEX), 2 (ATEX), 21 (ATEX), 21 (UKEX), 22 (ATEX).
• Operating Media: Compressed air, compliant with ISO 8573-1:2010 [7:4:4].
• Media Compatibility: Suitable for lubricated operation (continuous lubrication required thereafter).
• Corrosion Resistance Category (CRC): 1 – Low corrosion resistance capability.
• PWIS Compliance: VDMA24364-B1/B2-L for wetted paint defect substances.
• Storage Temperature: -40 °C … 60 °C.
• Medium Temperature: -5 °C … 40 °C.
• Ambient Temperature: -5 °C … 40 °C.
• Product Weight: 440 g.
• Electrical Interface: Requires additional ordering for F type coil.
• Mounting: With through holes.
• Pilot Exhaust Port 82: M5.
• Pilot Exhaust Port 84: M5.
• Air Ports:
  • Air Port 1: G1/8.
  • Air Port 2: G1/8.
  • Air Port 3: G1/8.
  • Air Port 4: G1/8.
  • Air Port 5: G1/8.
• Material Compliance: RoHS compliant.
• Seal Material: NBR.
• Housing Material: Die-cast aluminum.

The FESTO JMFH-5-1/8-B-EX solenoid valve combines robust construction with high-performance characteristics suitable for demanding industrial applications in explosive atmospheres. Its certifications and design ensure reliable operation and compliance with international safety standards.

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