Festo MN1H-2-1/2-MS 161728 2/2 NC Brass Solenoid Valve

Festo MN1H-2-1/2-MS is a 2/2-way, normally closed (NC), monostable solenoid valve. The brass body and diaphragm design are intended for controlling compressed air in industrial and commercial systems. Its oversized nominal diameter of 13 mm provides high flow rates, while the adjustable closing cushioning allows for controlled shut-off to minimize water hammer and system wear. The robust brass construction with corrosion-resistant fasteners is designed for reliable operation over a period of up to one year.

Applications:

• Water treatment systems

• Chemical and petrochemical plants

• Dust control in industrial settings

• Process and factory automation systems

Core Specifications:

• Valve function: 2/2-way, normally closed, monostable (single solenoid, pneumatic spring return)

• Actuation type: Electrical (by separate solenoid coil)

• Design: Pilot-operated diaphragm valve

• Sealing principle: Soft sealing (NBR diaphragm, seals)

• Housing material: Brass body with high-alloy stainless steel screws

• Pneumatic connection: G1/2 (female thread)

• Nominal size: 13 mm (orifice)

• Standard nominal flow rate (at 6 bar): 3,100 l/min (approx. 109 scfm)

• Operating pressure range: 0.5 … 10 bar

• Operating / media temperature: -10 °C … +60 °C

• Electrical connection: Type A plug connector to DIN EN 175301-803 (square shape)

• Operating medium: Filtered compressed air (filtration grade 200 µm, per ISO 8573-1:2010 [7:4:4]), may be lubricated or unlubricated

• Ambient media / temperature: -10 °C … +60 °C

• Degree of protection: IP65 (with appropriate mating plug)

• Product weight: approx. 400 g

• Note: This product is sold without a solenoid coil or mounting hardware. The coil and mating socket must be ordered separately based on your supply voltage.

Advanced Specifications:

• Switching time: ON ≤ 30 ms, OFF ≤ 100 ms

• Switching frequency: max. 3 Hz

• Closing cushioning: Adjustable via set screw

• Pilot exhaust port: M5 (thread must be purchased separately)

• Manual override (for emergency manual actuation): Fixed, non‑detenting push‑button

• Flow direction: Non-reversible

• Exhaust-air function: Without flow control option

• Reset method: Pneumatic spring

• Type of piloting: Pilot-actuated with internal supply

• Coil characteristics (standard): 24 V DC – 2.5 W; 110 V AC/50-60 Hz – 5.0 VA pick‑up / 3.7 VA holding

• Operating medium note: Compressed air per ISO 8573-1:2010. Lubricated operation possible. If the air is lubricated initially, continued lubrication is mandatory for the valve's service life.

• Electromagnetic compatibility: Emission EN 61000‑6‑3, Immunity EN 61000‑6‑2

• Vibration resistance: Severity level 2 per FN 942017‑4 and EN 60068‑2‑6

• Shock resistance: Severity level 2 per FN 942017‑5 and EN 60068‑2‑27

• Corrosion resistance class (CRC): 2 – moderate corrosion stress

• Cleanroom suitability: Class 4 to ISO 14644‑1

• LABS (PWIS) conformity: VDMA24364‑B1/B2‑L

• RoHS compliant

• Product conformity: CE, UKCA (declared), RCM, c UL us, EAC

• Product status: Commercialized / active; supersedes obsolete models (e.g. B=48 old status)

System Integration:

• This valve belongs exclusively to the Festo MN1H series of brass, pilot‑operated diaphragm valves.

• The brass body allows in‑line installation (threaded G1/2), providing direct integration into standard compressed air systems.

• Ventilation slot intended to prevent medium flow; for gaseous media only. Do not use with liquids unless approved by Festo. Condensation may be present.

• The valve's high nominal flow rate (3100 l/min) and large orifice are well‑suited to high‑capacity pneumatic circuits and demanding automation tasks.

• Manual override is provided for commissioning and maintenance without electrical power.

Compliance:
Refer to manufacturer official documentation for detailed certification and compliance information.

Related Products:

• MN1H-2-1/2-MS-20 (Standard version of this valve with the same key characteristics for universal use)

• MN1H-2-1/2-MS‐20 standard version (includes 20 mm nominal size, prepared by Festo for medium-sized applications)

• MN1H-2-1-MS (Same series with G1 thread, nominal size 25 mm, higher flow 11,500 l/min)

• MN1H-2-1/4-MS (Same series with G1/4 thread, nominal size 8 mm, lower flow 2,000 l/min)

• MN1H-2-11/2-MS-NPT (Same series with NPT 1-1/2 inch thread, nominal size 40 mm, max. flow 30,500 l/min)

• Accessory (must be ordered separately): Suitable solenoid coil (Festo Type N1, Form A according to DIN EN 175301-803, square design), e.g. Festo 24 V DC coil model MN1H‑2‑1/2‑MS‑COIL (order separately, request if not listed)

• Accessory: Matching 3‑pin plug socket, e.g., Festo Type‑A socket (square design, IP65), to be ordered separately

Service Notes:

• Solenoid coil and mating plug connectors are not included with the valve body; they must be ordered separately according to your local power supply requirements.