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Danfoss Waltech Hydraulic Compression Fittings

Danfoss Waltech Hydraulic Fittings – High-Performance DIN 2353 Bite Type Tube Fittings
Danfoss Waltech hydraulic fittings are precision-engineered to deliver exceptional performance, reliability, and leak-free operation in demanding hydraulic applications. Manufactured to DIN 2353 and ISO 8434-1 standards, these fittings offer compatibility, strength, and long service life for a wide range of industrial and mobile hydraulic systems.
Available in Extra-Light Duty (LL Series), Light Duty (L Series), and Heavy Duty (S Series) configurations, Waltech hydraulic fittings cover tube sizes from 6 mm OD to 42 mm OD and are supplied complete with cutting ring and nut for quick and secure installation.
Technical Specifications
| Series / Duty Class | Tube Size Range | Typical Pressure Rating* |
| Extra-Light Duty (LL Series) | up to 8 mm OD | ~100 bar |
| Light Duty (L Series) | 6–18 mm OD | 400 bar |
| 22–42 mm OD | 250 bar | |
| Heavy Duty (S Series) | 6–16 mm OD | 630 bar |
| 20–25 mm OD | 400 bar | |
| 30–38 mm OD | 250 bar |
*Pressure ratings at 20°C with carbon steel tube, in accordance with DIN 2353.
- Material: Mild steel with C6F free surface coating for superior corrosion protection.
- Standards: DIN 2353 / ISO 8434-1.
- Design: Supplied with cutting ring and nut for secure assembly.
Understanding DIN 2353 & ISO 8434-1 Standards
The DIN 2353 and ISO 8434-1 standards define dimensions, pressure ratings, materials, and performance requirements for metric bite type compression fittings used in hydraulic systems. Compliance ensures:
- Interchangeability between manufacturers.
- Guaranteed performance under defined pressure and temperature ranges.
- Reliable sealing in high-vibration and high-pressure environments.
These standards are recognised worldwide, making Danfoss Waltech fittings a trusted choice for both OEM and maintenance applications.
What is a Bite Type Fitting?
A bite type fitting uses a sharp-edged cutting ring that “bites” into the outside diameter of the tube when tightened. This creates:
- A mechanical grip for tube retention.
- A metal-to-metal seal for high-pressure reliability.
- Vibration resistance in dynamic hydraulic systems.
Bite type fittings are widely used for their ease of assembly, high sealing integrity, and ability to be used in both steel and stainless steel tubing systems.
Material & Coating Benefits
- Mild Steel Construction: Provides high tensile strength and durability under extreme pressure.
- C6F Free Surface Coating: Improves corrosion resistance, extending service life in harsh environments.
- Precision Machining: Ensures consistent assembly and leak-free performance.
Typical Applications
Danfoss Waltech hydraulic fittings are suitable for:
- Industrial hydraulics – presses, injection moulding machines, and automated machinery.
- Mobile equipment – excavators, loaders, tractors, and forestry machinery.
- Marine & offshore systems – steering hydraulics, winches, and lifting gear.
- Energy & utilities – wind turbines, oil & gas processing, and power generation.
- Material handling – cranes, forklifts, and conveyor systems.
Key Features & Benefits
- Full range of cutting ring, soft seal, flared coupling, and flange couplings.
- Available in light-duty and heavy-duty pressure classes.
- Designed for ease of installation and long-term service.
- Compatible with metric hydraulic tube systems.
- Manufactured to global standards for assured interchangeability.
If you require any further information, our excellent customer service team is here to help so please call us on 01794 835835.
