Valve Automation Solutions
Accessories for Smart Valve Automation
We offer a distinctive range of smart valve automation solutions specifically designed for process valves. From 3/2-way and 5/2-way NAMUR valves for standard on-off applications to an extensive array of devices for specialized control tasks, our products are engineered to meet diverse automation needs with precision and reliability.
When standard solutions reach their limits, HAFNER goes further.
Whether your application requires SIL 3 certification, explosion protection, 316L stainless steel construction, reliable operation at temperatures down to -50 °C, or fail-safe functionality, we develop pneumatic valve solutions tailored to meet the most demanding process automation requirements.
Engineering Benefits
Why Industries Choose HAFNER
Every product decision is driven by what industries actually need in the field - not by what is easiest to manufacture.
SIL 3 Certified
Designed for safety-critical shutdown applications where failure is not an option. Certified to IEC 61508 Parts 1-7.
Explosion-Proof
Approved for use in zones with explosive atmospheres. Meet ATEX, IECEX, CSA/FM, UKCA, and CCC standards. Types of ignition protection: Ex ec, Ex m, EX ia, Ex e mb, Ex dm, Ex d.
316L Stainless Steel C5-M approved
Ideal for aggressive media and corrosive environments, including offshore, chemical, and food-grade applications.
Down to -50 °C
Qualified for extreme cold. Seals and materials engineered for long-term low-temperature reliability.
Fully Encapsulated Coils
Valves with protection up to IP 67. Provides excellent protection against dust and water ingress. Suitable for harsher environments.
High-Flow NAMUR Valves
Our high-flow NAMUR valves feature an airflow rate of up to 2,250 Nl/min, ensuring fast actuation of process valves.
Brass-Free Versions
For aggressive atmospheres, such as ammonia, or when strict lead reduction is required.
Series "Salt & Valves"
A range of C5-M-certified, seawater-resistant aluminum valves designed for harsh environments. Ideal for shipbuilding, desalination plants, and other offshore applications.
Low-Power AS-i Coils
Coils with ≤ 2 Watt power consumption are ideal for ASI bus systems, as no additional electric connection cable is required.
HAFNER Knowledge Base
NAMUR Video Tutorials and PowerPoint Brochure
Our video series, NAMUR accessories made simple, explains the functions and benefits of our NAMUR accessories - all in a quick and easy-to-understand format.
PowerPoint Brochure
This brochure presents the complete range of our HAFNER NAMUR valves and accessories for automating process valves.
It helps you to choose the right valve for your given application, with product types, specifications, and use cases.
The following topics are covered:
Product Portfolio
NAMUR Valves and Accessories
NAMUR valves according to VDI/VDE 3845 with NAMUR 1 (1/4") and NAMUR 2 (1/2") interfaces are the standard for process valves. Additionally, special fail-safe valves and accessories are often required.
Bypass Valve
6/2-way configuration for quick-exhaust, fail-safe control with external air tank, and redundant circuit implementation for selecting between two air sources.
3-Position Fail-Safe Valve
Open, close, or hold any intermediate position. At supply loss ≥ 3 bar, the actuator moves automatically to fail-safe position.
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