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  1. Festo6
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Magnetic valves MN1H

Electrically operated process and media valves

The Festo MN1H solenoid valves are 2/2-way process valves with a brass body and MS coil. The range covers six nominal sizes from G 1/4 to G 1 1/2 (MN1H-2-1/4-MS through MN1H-2-1 1/2-MS). All variants are normally closed (NC) and suitable for compressed air and neutral media. The MS coil housings are rated IP65 and resistant to common industrial oils and greases.

⚙ Brass body, MS coil - robust design for industrial environments, proven MN1H construction
✓ 2/2-way, normally closed - safe closing on power failure (fail-safe)
↕ G 1/4 to G 1 1/2 - six nominal sizes for 1/4 to 1 1/2 inch pipe connections
📦 Direct-acting principle - fast switching times, independent of differential pressure

The part number directly encodes the port size: MN1H-2-1/4-MS corresponds to G 1/4, MN1H-2-1 1/2-MS to the largest available size G 1 1/2. All variants share the same MS coil type, available in 24 V DC and 230 V AC versions. Media compatibility and maximum allowable operating pressure should be verified against the Festo product data sheet before installation.

Typical applications: On/off switching of compressed air in machinery, control of water circuits with medium pipe sizes, isolation functions on pneumatic test rigs, and use as a control valve in safety shut-off circuits with fail-safe (NC) requirements.

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  1. Solenoid Valve MN1H-2-1/2-MS - Festo 161728
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    Solenoid Valve MN1H-2-1/2-MS - Festo 161728
    €161.82
  2. Solenoid Valve MN1H-2-1/4-MS - Festo 161725
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    Solenoid Valve MN1H-2-1/4-MS - Festo 161725
    €161.82
  3. Solenoid Valve MN1H-2-1 1/2-MS - Festo 161734
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    Solenoid Valve MN1H-2-1 1/2-MS - Festo 161734
    €566.92
  4. Solenoid Valve MN1H-2-3/8-MS - Festo 161727
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    Solenoid Valve MN1H-2-3/8-MS - Festo 161727
    €161.82
  5. Solenoid Valve MN1H-2-1-MS - Festo 161732
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    Solenoid Valve MN1H-2-1-MS - Festo 161732
    €236.08
  6. Solenoid Valve MN1H-2-3/4-MS - Festo 161731
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    Solenoid Valve MN1H-2-3/4-MS - Festo 161731
    €236.08
What are Festo MN1H solenoid valves and what industrial applications do they serve?
Festo MN1H solenoid valves are electrically actuated 2-way normally closed pneumatic control valves designed for precise media switching in process automation systems. These valves serve critical applications in manufacturing automation, packaging machinery, material handling systems, and industrial process control where reliable pneumatic media flow control is essential. The MN1H series operates as direct-acting solenoid valves, making them suitable for compressed air, neutral gases, and specific liquid media applications in industries ranging from automotive assembly to food processing equipment.
What are the key technical selection criteria for Festo MN1H solenoid valves?
The primary selection criteria for Festo MN1H solenoid valves include port connection size ranging from 1/4 inch to 1-1/2 inch as evidenced by models MN1H-2-1/4-MS through MN1H-2-1 1/2-MS, operating pressure range typically up to 10 bar for pneumatic applications, and electrical actuation voltage requirements. Media compatibility encompasses compressed air, neutral gases, and select liquid media with appropriate seal materials for the specific application. Flow coefficient (Cv value) varies with port size, with larger connections like the MN1H-2-1 1/2-MS providing higher flow rates for demanding applications requiring rapid actuating cylinder charging or high-volume media transfer.
What international standards and certifications apply to Festo MN1H solenoid valves?
Festo MN1H solenoid valves comply with ISO 9001 quality management standards and are designed according to EN 60204-1 electrical safety requirements for industrial machinery applications. The valves meet ISO 4414 pneumatic system safety standards and conform to the Machinery Directive 2006/42/EC for European market compliance. Electrical components are manufactured to IEC 60947 low-voltage switchgear standards, while pressure vessel aspects adhere to the Pressure Equipment Directive 2014/68/EU where applicable. For potentially explosive atmospheres, specific ATEX-certified variants may be available depending on the exact model configuration and intended installation environment.
What are the main differences between Festo MN1H valve variants available?
The primary differentiation among Festo MN1H variants lies in the port connection sizes, with models available in 1/4-inch (MN1H-2-1/4-MS), 3/8-inch (MN1H-2-3/8-MS), 1/2-inch (MN1H-2-1/2-MS), 3/4-inch (MN1H-2-3/4-MS), 1-inch (MN1H-2-1-MS), and 1-1/2-inch (MN1H-2-1 1/2-MS) configurations. Each size variant is optimized for specific flow requirements, with larger port sizes providing higher Cv values and flow capacity for applications requiring rapid cylinder actuation or high-volume media transfer. All variants maintain the same 2-way normally closed operating principle with MS (metal sealed) construction for enhanced durability in industrial environments.
What are the installation requirements and system compatibility considerations for Festo MN1H valves?
Festo MN1H solenoid valves require mounting in accordance with flow direction markings and must be installed with appropriate electrical conduit connections meeting local electrical codes and EN 60204-1 standards. The valves feature standard NPT or G-thread connections depending on model specification, requiring proper thread sealant or O-ring sealing for leak-tight installation. System compatibility extends to compressed air systems operating up to 10 bar, with recommended filtration to 40 microns and air drying to prevent internal corrosion. Installation orientation is typically unrestricted, though vertical mounting with coil upward is preferred for liquid media applications to prevent coil flooding and ensure reliable switching performance.
What safety ratings and operating conditions do Festo MN1H solenoid valves support?
Festo MN1H solenoid valves typically operate within an ambient temperature range of -10°C to +60°C with media temperature compatibility up to +80°C depending on seal material selection and specific model configuration. The valves maintain IP65 ingress protection rating for dust and water resistance in industrial environments, with electrical coil insulation class F providing thermal protection up to 155°C. Operating pressure range extends from vacuum conditions up to 10 bar maximum working pressure for standard pneumatic applications, while electrical safety compliance includes low-voltage directive conformity and appropriate surge protection for reliable operation in electromagnetic environments typical of industrial automation systems.
What maintenance schedule and service life expectations apply to Festo MN1H solenoid valves?
Festo MN1H solenoid valves are designed for maintenance-free operation with expected service life exceeding 10 million switching cycles under normal operating conditions within specified pressure and temperature ranges. Preventive maintenance should include quarterly visual inspection of electrical connections and annual verification of switching response time to detect coil degradation or mechanical wear. System maintenance requires monitoring of upstream filtration to maintain 40-micron particle size limits and periodic testing of electrical insulation resistance to ground using 500V DC megohm testing per IEC 60204-1 requirements. Replacement intervals typically range from 3-5 years in continuous duty applications, with seal replacement potentially required sooner in liquid media or high-temperature applications exceeding 60°C ambient conditions.