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HAFNER – EXCELLENCE IN PNEUMATICS

Hafner manufactures a complete range of high-quality pneumatic control valves in Europe.

Its products are not only used in the general automation or the machine-building industries, but also in applications throughout the car, truck and process industries. They create enjoyment for customers in the use of their valves because of its outstanding reliability offered at an extraordinary value.

The extensive product line consists of solenoid valves, air pilot, manually and mechanically actuated valves, completed by pneumatic control systems. With a wide range of standard products covering sizes from M 5 to G 3/4″, Hafner’s products are designed as a modular system, allowing them to develop and manufacture customer specific solutions in smaller numbers.

As a highly flexible company, Hafner rapidly assimilate technical innovations allowing for quick reaction to the demands of an ever changing market.

Hafner’s brand stands for over 30 years of knowledge and venture in the development of pneumatics. Manufacturing excellence, flexibility and customer responsiveness are the dominating elements of our corporate strategy.

The Design

By using high quality materials and an approved sealing system, they offer distinct advantages to our customers.
No compromises were made in the selection of materials. The bodies are made from anodised aluminium, the spools from stainless steel and the manual overrides from brass.

Hafner Pneumatics Product

The major advantage of HAFNER’s sealing concept is the low friction.

This advantage is based on the following technical features:

  • There is no deformation of the seal during assemblage of the valve – they are allowed to move independently within the brass cage. Without air pressure there is no contact pressure and, therefore, no friction. This construction also has consequences for the seals of the valves in use. When switching a 5/2 valve, only three of the five seals are exposed to pressure and applying friction to the spool.
  • This unique sealing design means that the contact pressure, and consequently the sealing effect, increases proportionally to the air pressure. If the air pressure is low, contact pressure of the seals and friction are minimised.
  • Even when pressure is high, due to the shape of the cage, there is only the minimal contact pressure applied to the sealing rings which is necessary to seal the valve, as shown in the drawing above.

These features offer you:

  • High durability and extended lifetime!
  • High flow combined with compact design!
  • High reliability of the valves!

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