Pneumatic Valves

Air valves are used in pneumatic automation circuits for supply, exhaust, directional reversal, and control of compressed air to cylinders, actuators, positioners, process valves, and auxiliary mechanisms. Selection is based on valve function—2/2, 3/2, 3/3, 5/2, 5/3, or twin 3/2—together with operating pressure, flow capacity, response time, return method, electrical signal type, ambient temperature, and the required fail-safe position in the event of air or power loss.

The range includes solenoid valves for PLC-controlled operation, pneumatically actuated valves for sequencing where no electrical signal is available, mechanical valves with roller lever or plunger actuation, manual lever valves, and NAMUR versions for direct mounting on quarter-turn valve actuators. For centralized installations, valve islands, 16 or 22 mm terminals, 3-way or 5-way manifolds, and multi-pin connections are used to reduce tubing complexity and organize field wiring.

For low-temperature service, solenoid valves are available for ambient conditions down to -50°C. In hazardous areas with potentially explosive atmospheres, ATEX-certified coils and valves are required. Stainless steel versions are specified for corrosive environments, washdown duty, chemical plants, or outdoor installation where resistance to moisture and aggressive agents must be considered.

Air quality has a direct effect on seal life, spool movement, and coil service life. For this reason, the pneumatic circuit should be assessed for filters, filter-regulators, FRL units, flow controls, quick-exhaust valves, and pneumatic logic elements. Maintenance should include leak testing, filter cleaning, inspection of coils and connectors, verification of manual override operation, lubrication where specified, and confirmation that supply pressure remains within the design limits of the pneumatic system.

Solenoid Valves
Solenoid Valves
Pneumatically Actuated Valves
Pneumatically Actuated Valves
Low-Temperature Valves
Low-Temperature Valves
Mechanically Actuated Valves
Mechanically Actuated Valves
Lever Actuated Valves
Lever Actuated Valves
Panel Mounting Valves
Panel Mounting Valves
Filter regulators
Filter regulators
Flow-regulators
Flow-regulators
Manifold Plates
Manifold Plates
Valve Terminals
Valve Terminals
Coils
Coils
Accessories
Accessories
Mechanically Actuated Valves - 3/2 Way Valves | Hafner - Hafner

Mechanically Actuated Valves - 3/2 Way Valves | Hafner

Mechanically Actuated Valves - 3/2 Way Valves | Hafner
Hafner
Hafner 3/2 Mechanical Air Valves Hafner 3/2 mechanical valves are used for pneumatic signal control or single-acting cylinders where actuation is achieved via mechanical contact, not by solenoid or air pilot. The valve features a supply port, output port, and exhaust port, allowing the actuator to be pressurized or vented depending on the actuation...
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Mechanically Actuated Valves - 5/2 Way Valves | Hafner - Hafner

Mechanically Actuated Valves - 5/2 Way Valves | Hafner

Mechanically Actuated Valves - 5/2 Way Valves | Hafner
Hafner
Hafner 5/2 Mechanical Air Valves Hafner 5/2 mechanical valves are used for controlling double-acting pneumatic cylinders where actuation is triggered by mechanical contact—such as a plunger, roller lever, or machine cam. The five-port, two-position configuration alternates supply and exhaust between the two cylinder chambers, enabling bidirectional motion...
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Valves for Panel Mounting - 3/2 Way Valves | Hafner - Hafner

Valves for Panel Mounting - 3/2 Way Valves | Hafner

Valves for Panel Mounting - 3/2 Way Valves | Hafner
Hafner
Hafner 3/2 Air Valves for Panel Mounting The Hafner BA / BH / BHP 3/2 series consists of manually operated valves designed for front panel or machine control mounting. These valves are used for pneumatic signal transmission, reset, start/stop commands, local supply or venting of circuits, and actuation of single-acting cylinders. The 3/2 function enables...
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Valves for Panel Mounting - 5/2 Way Valves | Hafner - Hafner

Valves for Panel Mounting - 5/2 Way Valves | Hafner

Valves for Panel Mounting - 5/2 Way Valves | Hafner
Hafner
Hafner 5/2 Pneumatic Panel-Mount Air Valves Hafner BA / BH / BHP 5/2 series are manually operated pneumatic valves designed for panel or operator console mounting. These valves are used for direct actuation of double-acting cylinders, without solenoids or pilot circuits. The 5/2 configuration alternates supply and exhaust between the two actuator ports,...
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Valves for Panel Mounting - 4/3 Way Valves | Hafner - Hafner

Valves for Panel Mounting - 4/3 Way Valves | Hafner

Valves for Panel Mounting - 4/3 Way Valves | Hafner
Hafner
Hafner 4/3 Valves for Panel Mounting BA 430 301 is a manually operated pneumatic valve designed for panel mounting with a Ø22 mm hole. The configuration is 4/3, functionally equivalent to a double 3/2 arrangement, with a center exhaust position. This valve is primarily used for controlling two single-acting cylinders or two independent pneumatic signals...
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Valves for Panel Mounting - 7/3 Way Valves | Hafner - Hafner

Valves for Panel Mounting - 7/3 Way Valves | Hafner

Valves for Panel Mounting - 7/3 Way Valves | Hafner
Hafner
Hafner 7/3 Valves for Panel Mounting The BA 730 301 is a manually operated pneumatic valve, 7/3 configuration, designed for front panel installation with a Ø22 mm mounting hole. Hafner technical documentation refers to this as a double 5/2-way valve, meaning it can control two double-acting cylinders from a single rotary actuator. Technical...
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Coils and Connectors - Connectors | Hafner - Hafner

Coils and Connectors - Connectors | Hafner

Coils and Connectors - Connectors | Hafner
Hafner
Hafner Electromagnetic Valve Coil Connectors Hafner connectors are used for the electrical connection of coils in electromagnetic pneumatic valves. Selection is based on coil system, DIN connector form, control voltage, and requirements for LED indication or overvoltage protection via varistor. Series and Compatibility ST 16: For MA16 coils, Form C per...
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Coils and Connectors - Coils | Hafner - Hafner

Coils and Connectors - Coils | Hafner

Coils and Connectors - Coils | Hafner
Hafner
Hafner Electromagnetic Valve Coils Hafner coils are used for the electrical actuation of pneumatic valves in the MD and MH series. Coil selection is not based solely on voltage; engineers must verify coil system compatibility, connector type, power consumption, valve interface, and control panel requirements. Coil Series Overview MA16: For MD-series 16...
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ATEX Valves - Coils | Hafner - Hafner

ATEX Valves - Coils | Hafner

ATEX Valves - Coils | Hafner
Hafner
Hafner ATEX Coils for Pneumatic Solenoid Valves Hafner ATEX-certified coils are specified for use in solenoid valves installed within hazardous areas where explosive atmospheres may occur. Selection must be based on the installation zone classification, protection method, supply voltage, power consumption, and compatibility with the valve body. Mechanical...
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ATEX Valves - Valves with NAMUR-interface | Hafner - Hafner

ATEX Valves - Valves with NAMUR-interface | Hafner

ATEX Valves - Valves with NAMUR-interface | Hafner
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...
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ATEX Valves - Solenoid valves | Hafner - Hafner

ATEX Valves - Solenoid valves | Hafner

ATEX Valves - Solenoid valves | Hafner
Hafner
Hafner ATEX Pneumatic Solenoid Valves for Hazardous Areas Hafner ATEX solenoid valves are designed for pneumatic control in hazardous (explosive) atmospheres, including compressed air, pilot air, and actuator control circuits. The range covers ignition protection types Ex dm, Ex d, Ex m, Ex ia, and Ex e mb, selected according to zone classification,...
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ATEX Valves - Pneumatically actuated valves | Hafner - Hafner

ATEX Valves - Pneumatically actuated valves | Hafner

ATEX Valves - Pneumatically actuated valves | Hafner
Hafner
Pneumatically Actuated Hafner ATEX Valves Hafner P Ex series valves are pneumatically actuated for use in ATEX-classified installations, where actuation is achieved via pilot air rather than an electrical coil mounted on the valve. These valves are specified for pneumatic circuits in hazardous areas, particularly where control signals must remain purely...
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ATEX Valves - Mechanically actuated valves | Hafner - Hafner

ATEX Valves - Mechanically actuated valves | Hafner

ATEX Valves - Mechanically actuated valves | Hafner
Hafner
Hafner ATEX Mechanical Air Valves Hafner ATEX-certified mechanical valves are specified for pneumatic circuits in hazardous areas where actuation must be mechanical rather than solenoid-based. These valves are suitable for end-of-stroke detection, mechanical interlocks, and pneumatic sequencing in environments requiring ATEX documentation and compliance....
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Stainless Steel Valves - Valves with NAMUR-interface | Hafner - Hafner

Stainless Steel Valves - Valves with NAMUR-interface | Hafner

Stainless Steel Valves - Valves with NAMUR-interface | Hafner
Hafner
Hafner Stainless Steel NAMUR Solenoid Valves Hafner MNH INOX NAMUR-mounted solenoid valves are designed for direct installation on pneumatic rotary actuators in process valve automation. The stainless steel body and NAMUR 1/4” interface minimize external pilot air tubing between valve and actuator, supporting compact and robust assembly in industrial...
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Stainless Steel Valves - Solenoid valves | Hafner - Hafner

Stainless Steel Valves - Solenoid valves | Hafner

Stainless Steel Valves - Solenoid valves | Hafner
Hafner
Hafner Stainless Steel Solenoid Valves Hafner INOX stainless steel valves are specified for pneumatic circuits where aluminium bodies are unsuitable due to humidity, washdown requirements, outdoor installation, or chemically aggressive environments. Valve bodies are constructed from stainless steel 316L / 1.4404. Available configurations include 3/2, 5/2,...
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Stainless Steel Valves - Pneumatically actuated valves | Hafner - Hafner

Stainless Steel Valves - Pneumatically actuated valves | Hafner

Stainless Steel Valves - Pneumatically actuated valves | Hafner
Hafner
Stainless Steel Pneumatically Actuated Hafner Valves Hafner stainless steel pneumatically actuated valves are specified for compressed air circuits where actuation is achieved via pilot pressure rather than solenoid coils. INOX construction is suitable for aggressive or wet environments, washdown areas, outdoor installations, food and beverage,...
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Stainless Steel Valves - Lever actuated valves | Hafner - Hafner

Stainless Steel Valves - Lever actuated valves | Hafner

Stainless Steel Valves - Lever actuated valves | Hafner
Hafner
Hafner Stainless Steel Air Valves with Lever Actuation The Hafner HV / HVR VES series comprises manually operated pneumatic valves constructed from stainless steel, designed for panel mounting and local compressed air control. These valves are specified where manual actuation is required without solenoid or pilot signal, particularly in environments with...
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Low-Temperature Valves | -50°C | Hafner - Hafner

Low-Temperature Valves | -50°C | Hafner

Low-Temperature Valves | -50°C | Hafner
Hafner
Hafner Low Temperature Solenoid Valves Down to -50 °C Hafner TT series valves are designed for pneumatic circuits operating in environments from -50…+50 °C. Typical applications include cold storage, outdoor installations, food processing units, marine systems, and industrial sites with winter exposure. Selection is not based solely on flow rate and...
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Valves with NAMUR-Interface - NAMUR assembly-accessories | Hafner - Hafner

Valves with NAMUR-Interface - NAMUR assembly-accessories | Hafner

Valves with NAMUR-Interface - NAMUR assembly-accessories | Hafner
Hafner
Hafner NAMUR Mounting Accessories Hafner NAMUR assembly accessories are used for mechanical adaptation of NAMUR valves to pneumatic rotary actuators or for converting the valve to an in-line configuration. Selection is based on connection geometry, port diameter, and compatibility with NAMUR 1/4” or NAMUR 1/2” interfaces. These accessories are relevant...
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Valves with NAMUR-Interface - NAMUR accessories | Hafner - Hafner

Valves with NAMUR-Interface - NAMUR accessories | Hafner

Valves with NAMUR-Interface - NAMUR accessories | Hafner
Hafner
Hafner Accessories for NAMUR Valves Hafner NAMUR accessories are designed for pneumatic rotary actuators used in process valve automation. These components are installed between the valve, actuator, and air supply lines to manage air exhaust, recirculation, manual bypass, or specific fail-safe functions. They support operational safety and process control...
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Valves with NAMUR-Interface - Flow-regulator plate | Hafner - Hafner

Valves with NAMUR-Interface - Flow-regulator plate | Hafner

Valves with NAMUR-Interface - Flow-regulator plate | Hafner
Hafner
Hafner NAMUR Flow Control Plates Hafner DRN flow regulators are intermediate plate-type devices designed for installation between a NAMUR valve and a pneumatic rotary actuator. They enable adjustment of process valve opening and closing speeds without the need for additional external tubing, supporting compact actuator assemblies in industrial...
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Valves with NAMUR-Interface - Lever actuated valves | Hafner - Hafner

Valves with NAMUR-Interface - Lever actuated valves | Hafner

Valves with NAMUR-Interface - Lever actuated valves | Hafner
Hafner
Hafner NAMUR Lever-Operated Air Valves The Hafner HVN / HVRN series are manually actuated pneumatic valves with NAMUR [1/4”] interface, designed for direct mounting on rotary pneumatic actuators used in process valve automation. These valves are specified where local manual operation of the actuator is required, without solenoid or pilot signal from a...
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Valves with NAMUR-Interface - Pneumatically actuated valves | Hafner - Hafner

Valves with NAMUR-Interface - Pneumatically actuated valves | Hafner

Valves with NAMUR-Interface - Pneumatically actuated valves | Hafner
Hafner
Pneumatically Actuated Hafner NAMUR Valves Hafner PN series are pneumatically actuated valves with NAMUR interface, designed for direct mounting on rotary actuators in process valve automation. Actuation is achieved via pilot air, eliminating the need for an electrical coil on the valve. The NAMUR interface complies with VDI/VDE 3845 standards for...
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Valves with NAMUR-Interface - Solenoid valves | Hafner - Hafner

Valves with NAMUR-Interface - Solenoid valves | Hafner

Valves with NAMUR-Interface - Solenoid valves | Hafner
Hafner
Hafner Electromagnetic Valves with NAMUR Interface Hafner NAMUR solenoid valves are designed for direct mounting on pneumatic rotary actuators used in process valve automation. The NAMUR 1/4” interface complies with VDI/VDE 3845 (NAMUR 1), with 1/2” variants also available. Installation utilizes O-rings, mounting screws, and a locating pin, minimizing...
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Pneumatic Valves