ATEX Valves - Valves with NAMUR-interface | Hafner - Hafner

ATEX Valves - Valves with NAMUR-interface | Hafner

Name: ATEX Valves with NAMUR Interface for Hazardous Areas
Brand: Hafner
SKU: ATEX Valves - Valves with NAMUR-interface | Hafner

Hafner ATEX Solenoid Valves with NAMUR Interface

Hafner ATEX NAMUR solenoid valves are designed for direct mounting on pneumatic rotary actuators used in process valve automation. The NAMUR interface minimizes external pilot tubing and enables standardized valve–actuator connections in hazardous area applications. The range covers protection types EEx dm IIC T5, EEx d IIC T6, EEx m II T4, EEx ia IIC T6, and EEx e mb IIC T6, in compliance with ATEX directives for explosive atmospheres.

Available Functions

3/2 NC: For single-acting actuators with spring return. Typical codes MNH/MNC 310, G 1/4” or G 1/2”, flow rates 1250 or 3000 l/min.
5/2 monostable: For double-acting actuators, return via pilot air.
5/2 bistable: Two coils, last position maintained until new electrical command.
NAMUR-Flex 3/2–5/2: Allows use of a common valve type for different actuator logics.
5/3: Center position centre closed or centre exhausted, for defined behavior on signal loss.

Technical Data

Standard flow rates are 1250 l/min for NAMUR 1/4” and 3000 l/min for NAMUR 1/2”. Operating pressures typically 2…10 bar, 1…10 bar, or 3…10 bar for 5/3 types. Coil consumption is 3 W DC / 5 VA AC. Stainless steel (INOX VES) and low-temperature (TT, -50…+50 °C) versions are available for selected models.

Selection Criteria

Selection must confirm:

ATEX zone and coil protection type,
single or double acting actuator,
fail-open / fail-close position,
3/2, 5/2, or 5/3 logic,
NAMUR 1/4” or 1/2” interface,
requirement for stainless steel body,
correct coil voltage and certified electrical connector.

Maintenance

Check NAMUR O-rings, exhaust port leakage, instrument air cleanliness, Ex wiring condition, and coil certification compatibility. Coil replacement in ATEX installations must use an equivalent certified component.

Datasheet and documents

Description

Ignition protection type

3/2-way valves

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 310 701 Ex dm	G 1/4"	1250 l/min	2...10 bar	monostabil \| NC	3 W / 5 VA	NAMUR [G 1/4"]

5/2-way valves

Explosionsgeschützte Magnetventile mit NAMUR-Schnittstelle | monostabil | Luftfederrückstellung | mit Handhilfsbetätigung | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 510 701 Ex dm	G 1/4"	1250 l/min	2...10 bar	monostabil	3 W / 5 VA	NAMUR [G 1/4"]

3/2-way valves

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNC 310 701 Ex d	G 1/4"	1250 l/min	2...10 bar	monostabil \| NC	3 W / 5 VA	NAMUR [G 1/4"]

5/2-way valves

Explosionsgeschützte Magnetventile mit NAMUR-Schnittstelle | monostabil | Luftfederrückstellung | mit Handhilfsbetätigung | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNC 510 701 Ex d	G 1/4"	1250 l/min	2...10 bar	monostabil	3 W / 5 VA	NAMUR [G 1/4"]

3/2-way valves

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 310 701 Ex m	G 1/4"	1250 l/min	2...10 bar	single solenoid \| NC	3 W / 5 VA	NAMUR [1/4"]
MNH 310 121 Ex m	G 1/2"	3000 l/min	1...10 bar	single solenoid \| NC	3 W / 5 VA	NAMUR [1/2"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 310 711 Ex m	G 1/4"	1250 l/min	2...10 bar	single solenoid \| NC	3 W / 5 VA	NAMUR [1/4"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 310 701 VES Ex m	G 1/4"	1250 l/min	2...10 bar	single solenoid \| NC	3 W / 5 VA	NAMUR [1/4"]

5/2-way valves

Explosion proof solenoid valve with NAMUR interface | monostable | air spring return | with manual override | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 510 701 Ex m	G 1/4"	1250 l/min	2...10 bar	single solenoid	3 W / 5 VA	NAMUR [1/4"]
MNH 510 121 Ex m	G 1/2"	3000 l/min	1...10 bar	single solenoid	3 W / 5 VA	NAMUR [1/2"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 510 711 Ex m	G 1/4"	1250 l/min	2...10 bar	single solenoid	3 W / 5 VA	NAMUR [1/4"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 510 701 VES Ex m	G 1/4"	1250 l/min	2...10 bar	single solenoid	3 W / 5 VA	NAMUR [1/4"]

Explosion proof solenoid valve with NAMUR interface | bistable | with manual override | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 520 701 Ex m	G 1/4"	1250 l/min	2...10 bar	double solenoid	3 W / 5 VA	NAMUR [1/4"]
MNH 520 121 Ex m	G 1/2"	3000 l/min	1...10 bar	double solenoid	3 W / 5 VA	NAMUR [1/2"]

Explosion proof solenoid valve with NAMUR interface | bistable | with manual override | INOX | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 520 701 VES Ex m	G 1/4"	1250 l/min	2...10 bar	double solenoid	3 W / 5 VA	NAMUR [1/4"]

NAMUR-Flex | 3/2 - 5/2 valves

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 350 701 Ex m	G 1/4"	1250 l/min	2...10 bar	Namur-Flex (3/2 - 5/2-way)	3 W / 5 VA	NAMUR [1/4"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 350 701 VES Ex m	G 1/4"	1250 l/min	2...10 bar	Namur-Flex (3/2 - 5/2-way)	3 W / 5 VA	NAMUR [1/4"]

5/3-way valves

Explosion proof solenoid valve with NAMUR interface | spring return to middle position | with manual override | centre closed | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 531 701 Ex m	G 1/4"	1250 l/min	3...10 bar	5/3-way \| centre closed	3 W / 5 VA	NAMUR [1/4"]
MNH 531 121 Ex m	G 1/2"	3000 l/min	1...10 bar	5/3-way \| centre closed	3 W / 5 VA	NAMUR [1/2"]

Explosion proof solenoid valve with NAMUR interface | spring return to middle position | with manual override | centre exhausted | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 532 701 Ex m	G 1/4"	1250 l/min	3...10 bar	5/3-way \| centre exhausted	3 W / 5 VA	NAMUR [1/4"]

3/2-way valves

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 310 701 Ex ia	G 1/4"	1250 l/min	2...10 bar	single solenoid \| NC	3 W / 5 VA	NAMUR [1/4"]
MNH 310 121 Ex ia	G 1/2"	3000 l/min	1...10 bar	single solenoid \| NC	3 W / 5 VA	NAMUR [1/2"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 310 711 Ex ia	G 1/4"	1250 l/min	2...10 bar	single solenoid \| NC	3 W / 5 VA	NAMUR [1/4"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 310 701 TT Ex ia	G 1/4"	1250 l/min	2...10 bar	single solenoid \| NC	3 W / 5 VA	NAMUR [1/4"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 310 701 VES Ex ia	G 1/4"	1250 l/min	2...10 bar	single solenoid \| NC	3 W / 5 VA	NAMUR [1/4"]

5/2-way valves

Explosion proof solenoid valve with NAMUR interface | monostable | air spring return | with manual override | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 510 701 Ex ia	G 1/4"	1250 l/min	2...10 bar	single solenoid	3 W / 5 VA	NAMUR [1/4"]
MNH 510 121 Ex ia	G 1/2"	3000 l/min	1...10 bar	single solenoid	3 W / 5 VA	NAMUR [1/2"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 510 711 Ex ia	G 1/4"	1250 l/min	2...10 bar	single solenoid	3 W / 5 VA	NAMUR [1/4"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 510 701 TT Ex ia	G 1/4"	1250 l/min	2...10 bar	single solenoid	3 W / 5 VA	NAMUR [1/4"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 510 711 TT Ex ia	G 1/4"	1250 l/min	2...10 bar	single solenoid	3 W / 5 VA	NAMUR [1/4"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 510 701 VES Ex ia	G 1/4"	1250 l/min	2...10 bar	single solenoid	3 W / 5 VA	NAMUR [1/4"]

Explosion proof solenoid valve with NAMUR interface | bistable | with manual override | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 520 701 Ex ia	G 1/4"	1250 l/min	2...10 bar	double solenoid	3 W / 5 VA	NAMUR [1/4"]
MNH 520 121 Ex ia	G 1/2"	3000 l/min	1...10 bar	double solenoid	3 W / 5 VA	NAMUR [1/2"]

Explosion proof solenoid valve with NAMUR interface | bistable | with manual override | -50°C...+50°C | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 520 701 TT Ex ia	G 1/4"	1250 l/min	2...10 bar	double solenoid	3 W / 5 VA	NAMUR [1/4"]

Explosion proof solenoid valve with NAMUR interface | bistable | with manual override | INOX | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 520 701 VES Ex ia	G 1/4"	1250 l/min	2...10 bar	double solenoid	3 W / 5 VA	NAMUR [1/4"]

NAMUR-Flex | 3/2 - 5/2 valves

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 350 701 Ex ia	G 1/4"	1250 l/min	2...10 bar	Namur-Flex (3/2 - 5/2-way)	3 W / 5 VA	NAMUR [1/4"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 350 701 VES Ex ia	G 1/4"	1250 l/min	2...10 bar	Namur-Flex (3/2 - 5/2-way)	3 W / 5 VA	NAMUR [1/4"]

5/3-way valves

Explosion proof solenoid valve with NAMUR interface | spring return to middle position | with manual override | centre closed | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 531 701 Ex ia	G 1/4"	1250 l/min	3...10 bar	5/3-way \| centre closed	3 W / 5 VA	NAMUR [1/4"]
MNH 531 121 Ex ia	G 1/2"	3000 l/min	1...10 bar	5/3-way \| centre closed	3 W / 5 VA	NAMUR [1/2"]

Explosion proof solenoid valve with NAMUR interface | spring return to middle position | with manual override | centre exhausted | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 532 701 Ex ia	G 1/4"	1250 l/min	3...10 bar	5/3-way \| centre exhausted	3 W / 5 VA	NAMUR [1/4"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 531 701 TT Ex ia	G 1/4"	1250 l/min	3...10 bar	5/3-way \| centre closed	3 W / 5 VA	NAMUR [1/4"]

3/2-way valves

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 310 701 Ex e mb	G 1/4"	1250 l/min	2...10 bar	single solenoid \| NC	3 W / 5 VA	NAMUR [1/4"]
MNH 310 121 Ex e mb	G 1/2"	3000 l/min	1...10 bar	single solenoid \| NC	3 W / 5 VA	NAMUR [1/2"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 310 711 Ex e mb	G 1/4"	1250 l/min	2...10 bar	single solenoid \| NC	3 W / 5 VA	NAMUR [1/4"]

5/2-way valves

Explosion proof solenoid valve with NAMUR interface | monostable | air spring return | with manual override | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 510 701 Ex e mb	G 1/4"	1250 l/min	2...10 bar	single solenoid	3 W / 5 VA	NAMUR [1/4"]
MNH 510 121 Ex e mb	G 1/2"	3000 l/min	1...10 bar	single solenoid	3 W / 5 VA	NAMUR [1/2"]

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 510 711 Ex e mb	G 1/4"	1250 l/min	2...10 bar	single solenoid	3 W / 5 VA	NAMUR [1/4"]

Explosion proof solenoid valve with NAMUR interface | bistable | with manual override | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 520 701 Ex e mb	G 1/4"	1250 l/min	2...10 bar	double solenoid	3 W / 5 VA	NAMUR [1/4"]
MNH 520 121 Ex e mb	G 1/2"	3000 l/min	1...10 bar	double solenoid	3 W / 5 VA	NAMUR [1/2"]

NAMUR-Flex | 3/2 - 5/2 valves

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 350 701 Ex e mb	G 1/4"	1250 l/min	2...10 bar	Namur-Flex (3/2 - 5/2-way)	3 W / 5 VA	NAMUR [1/4"]

5/3-way valves

Explosion proof solenoid valve with NAMUR interface | spring return to middle position | with manual override | centre closed | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 531 701 Ex e mb	G 1/4"	1250 l/min	3...10 bar	5/3-way \| centre closed	3 W / 5 VA	NAMUR [1/4"]
MNH 531 121 Ex e mb	G 1/2"	3000 l/min	1...10 bar	5/3-way \| centre closed	3 W / 5 VA	NAMUR [1/2"]

Explosion proof solenoid valve with NAMUR interface | spring return to middle position | with manual override | centre exhausted | ATEX

Type number	Port size	Air flow	Operating pressure	Funktion	Power consumption	Interface
MNH 532 701 Ex e mb	G 1/4"	1250 l/min	3...10 bar	5/3-way \| centre exhausted	3 W / 5 VA	NAMUR [1/4"]

ATEX Valves - Valves with NAMUR-interface | Hafner

Hafner ATEX Solenoid Valves with NAMUR Interface

Available Functions

Technical Data

Selection Criteria

Maintenance

Datasheet and documents

Description

Ignition protection type

Athens Department

Thessaloniki Department