Walther Präzision Produktpalette

Transportation Engineering

The Requirements

Quick-release couplings used in means of transport are often required to ensure a secure connection in constant vibrations and in heavily polluted environments - for years and under extreme temperature fluctuations. This also includes monocouplings of smaller nominal sizes in the automotive sector as well as customer-specific docking systems on ships.
Particularly high demands are imposed in terms of reliability and availability in railway technology. Connections in safety-relevant areas must remain reliably functional over long periods of time under heavy dynamic stress.

Our Solutions

Hochdruck Betankungs Kupplung

Our couplings are used in railway technology for power supply, air conditioning, cooling of transformers and rectifiers as well as in hydraulic and pneumatic brake systems. In ship technology, our monocouplings are used to ensure the detachable connection of water, hydraulic and pneumatic lines. Our docking systems have been successfully deployed for many years for simultaneous loading and unloading or for supplying ferries with operating and consumption media (fuel, water, etc.). In cars, our monocouplings are used, for instance, to connect the hydraulic lines of comfort systems and special equipment. They also facilitate the safe refuelling of alternative fuels such as gaseous and liquid hydrogen or the assembly and servicing of fluid systems.

Mono-couplings and multi-couplings specially designed for use in cooling systems

Quick couplings specially designed for braking systems requirements in rail vehicles

Quick Couplings for Hydrogen Refuelling

Quick coupling for compact hydraulics in vehicles. After bringing together the coupling halves, the coupling locks automatically. Oil-tight version, no leakage.

Multi-Couplings for loading and unloading of cross channel ferries

Monocouplings in transport technology

Quick-release couplings that connect only one media-carrying line are specially designed in transport technology for use in cooling and braking systems. Cooling couplings secure system availability through maximum functional reliability. Hydraulic couplings are put to use in braking systems of rail vehicles. The couplings can be used as standard for temperatures between -35 and +80 degrees Celsius.


Multicouplings in transport technology

Manually operated multicouplings used for stationary cooling of refrigerated vehicles are ideally suited for the simultaneous connection of several media lines. They ensure quick and easy operation of the interface between the vehicle and the refrigeration system. Automatic multicouplings for remote operation are used, for example, on high-speed ferries. These coupling systems enable the simultaneous refuelling of consumables and the emptying of waste water tanks. There is also the option of additionally transmitting electronic control signals and electrical power circuits  in order to better protect the environment during port laytime.


Clean-break couplings in transport technology

Quick couplings with drip-free clean-break technology meet the very highest demands in terms of process and operational safety in the field of transport technology. In cooling systems, they are used to connect power modules to cooling circuits. Self-closing valves on both sides guarantee minimal residual leakage during the decoupling process. The clean-break couplings in small compact design are designed for an operating pressure of up to 30 bar and for extreme operating temperatures.


Braking systems in transport technology

Quick-release couplings suitable for operating pressures up to 250 bar are used for the special requirements when it comes to braking systems for rail vehicles. The hydraulic couplings are equipped with a vibration-proof locking mechanism, are small and compact in design and are known for their  minimal residual leakage when uncoupled. Depending on the seal version, they are designed for operating temperatures between -35 and +80 degrees Celsius.


Quick-connect couplings in transport technology

Quick-connect couplings, which are equipped with automatic and fast locking with a click, are often used in compact hydraulics in comfort systems of passenger and commercial vehicles. They are characterised by their considerable time savings during final assembly and can withstand operating pressures of up to 350 bar. Assembly couplings can be equipped with integrated shut-off valves, which enable the assembly of pre-filled and vented tubing components and prevent hydraulic fluid from escaping in the event of subsequent servicing.


Couplings for hydrogen in transport technology

A quick-release coupling system consisting of a refuel coupling and an emergency disconnect coupling is used for refuelling with hydrogen. The refuelling system meets the highest safety requirements by means of an axial safety locking device in push-pull technology. The coupling system is designed for ultra-cold filling down to -40 degrees and for filling common vehicle systems with 350 or 700 bar H2.


Multicoupling for supply and disposal of media in shipping

Automatic multicouplings for remote operation enable the simultaneous transfer of many different media on high-speed ferries. This makes it possible to refuel consumables, such as turbine fuel or fresh water, and empty wastewater tanks at the same time. Transfer and lay times can be reduced through the use of the multicouplings.