With quick couplings (mono-couplings), the repeated connection and disconnection of individual fluid or electric lines is fast and reliable without the need for additional tools. In addition to our wide range of standard quick couplings with a variety of materials and sealing qualities, we also offer customised solutions to our customers.
In contrast to multi-couplings, mono-couplings connect only one line, each. They also consist of two connection parts: the coupling and the adapter, or female and male. Quick couplings enable the fast connection and disconnection of lines that supply machines and equipment with electricity, liquid or gaseous media. As a result, they ensure the reliable and secure connection and exchange of modules, systems and aggregates in different industries – whether in the steel industry, chemical and pharmaceuticals industry, medical technology, transportation industry or offshore technology industry.
Series BF
Stainless steel clean-break coupling for challenging fluids or gases
Series 32
Compressed air safety coupling with automatic lock, which is disconnected with a button.
Series EH
Simple hook-in screw-type coupling in extremely short design
Series CH
Clean-break screw-type couplings for hydraulics
Type TT-013
WALcryo – Cryogenic quick coupling
Types TE-010-Z03 / TE-016-Z02
Couplings equipped with PTFE seals for superheated steam
Series TE
PTFE-equipped quick couplings
Type TT-009
WALcryo – Cryogenic quick coupling
Type 15-050
SIP Clean Break Coupling
Type 01-018
CIP / SIP Straight-through coupling
Type 15-012
CIP / SIP quick-release coupling with pawl lock
Types 33-005 / 33-009
CIP / SIP quick coupling with automatic locking mechanism
Type 07-003-Y32
Quick fit coupling
RFID Couplings
Emergency-Release Couplings Type 20-019-Z02
Type 89-006
Medical gas supply – plug-in couplings in various country standards
Type 89-004
Medical gas supply coupling for Mini-Shraeder
Type 03-005
Paint and lacquer connector
Type 13-019
Coaxial quick couplings for electrics and fluids
Series 11-012 / 11-019
High temperature couplings
Series HG – BA
Hydrogen refueling – Breakaway Coupling
Series HG
Hydrogen refueling nozzle
Type 04-005
Breathing air coupling
Series CI
Clean Break coupling for demanding tempering tasks
Series CH
Clean-break screw-type couplings for hydraulics
Type 40-030
CIP / SIP and Clean Break Coupling
Series DD
High temperature- high pressure clean-break couplings
Series HR
Non-interchangeable Quick Couplings
Dust Caps Series SK/SL
Compressed air spiral hoses
Scratch protection for Series LT
Air Guns
Threaded Hose Connectors
Multi-way connectors
Emergency-Release Couplings Type LP-050-Z39
Emergency-Release Couplings Type CT-019-0-Z02
Emergency-Release Couplings Type CT-012-Z13
Emergency-Release Couplings LP-050-Z41
Emergency-Release Couplings LP-032-Z34
Emergency-Release Couplings LP-019-Z75
Mono-couplings in many different designs
The various quick coupling types differ according to the intended application, the medium supplied though the line, the pressure conditions in the line and the connection mechanism. In terms of the intended application, there are thru-type couplings and adapters that ensure the free passage of a medium without a valve; however, the lines are not blocked when disconnected. Quick couplings and adapters with valves seal lines when disconnected; clean-break couplings and adapters additionally ensure drip-free disconnection with dry or low-leakage valves. Depending on the area of application, air, gas, acid, water or oil (e.g. for water and oil-based hydraulics) are used. According to the pressure conditions, there are low-pressure, medium-pressure and high-pressure quick connect couplings; depending on the connection mechanism, plug-type and screw-type couplings are used in industrial environments.
Low-pressure quick couplings
Standard low-pressure couplings are – depending on the type – designed for an operating pressure of up to 100 bar and are suitable for various media, including water, oils, fuel or compressed air. They are used, for example, on compressed-air consumers in tools and blow guns, or in the steel industry to supply equipment with hydraulics and compressed air. Depending on the application area, there are low-pressure couplings with an automatic locking mechanism that provides more convenience during coupling.
Medium-pressure quick couplings
Medium-pressure couplings, which – depending on the type – are designed for an operating pressure of up to 250 bar, are suitable for liquid and gaseous media. Clean-break couplings in the medium-pressure range are used for hydraulic applications, for example, but are also suitable for connecting lines that supply compressed air, water or fuel. Depending on the application area and equipment, mono-couplings have an automatic locking mechanism or unlocking protection.
High-pressure quick couplings
Quick couplings can also withstand high pressures. High-pressure couplings – depending on the type –are suitable for an operating pressure of up to 2,000 bar and are used, for example, for pneumatic oil lubrication on roll stands in the steel industry. In order to withstand this type of extreme stress, mono-couplings for high-pressure applications have a very robust design. This also applies for applications in offshore installations where quick-connect couplings are often required to operate under seawater applications for decades.
To prevent leaks and environmental pollution, couplings with special sealing systems are required here. These include quick couplings for hydraulic control and chemical injection systems, but also mono-couplings for gas lines that can be operated by a diving robot, a so-called “remotely operated vehicle” (ROV).
Clean-break couplings
In sensitive sectors such as the chemical and pharmaceuticals industry, where the safety standards are particularly high, clean-break couplings ensure drip-free connection and disconnection of lines; for example, for taking samples of various liquids and gases. Clean-break valves ensure that connection is possible without splashes, air inclusion or media loss, and – depending on the valve – even under residual pressure.
Plug- and screw-type couplings
In the medical technology industry, plug- and screw-type couplings are used for quickly connecting and disconnecting lines, whether they are clean-break couplings for coolant lines in computer tomographs, quick couplings in dialysis machines or self-sealing couplings for supplying medical gas in hospitals. To ensure safe operation and prevent incorrect line connections, the couplings are available in different colour markings and/or mechanical coding versions to make them non-interchangeable.
Function and advantages of quick-connect couplings
Using quick-connect couplings provides more flexibility and a greater economic benefit, as lines can be disconnected and re-connected quickly and safely. On vehicles, for example, mono-couplings facilitate the assembly and maintenance of heating and air-conditioning systems, or they enable safe refuelling with gaseous hydrogen. On rail vehicles, the couplings are a key component of hydraulic and pneumatic brake systems, energy supply systems or air conditioning systems.
