Metal Hoses

HANSA-FLEX – System Partner for Hydraulics Hose Replacement Service – 24h hour rapid response Our 280 service vans from the hydraulic emergency service are always just a call away. Whether on the construction site, during the harvest or in industrial applications: in case of a machine failure the job is carried out on site – and around the clock. Industrial Service – maintain and optimise Your machines must be running, around the clock. Preventative maintenance of the HANSA-FLEX Industrial Services helps you to save money and guarantees maximum machine uptime. We will advise you from the selection...

Metal Hoses Technical Information Hose fittings Subject Index / Index Metal hoses – Date: 10/2015

2 HANSA^FLEX Metal hoses-Date: 10/2015

Metal hose connectors Metric connectors Page 48 Imperial connectors Page 55 Pipe connectors Page 64 Fittings for the food industry Page 77 Flange connections Page 80 Metal hoses – Date: 10/2015

Technical Information Metal hoses – Date: 10/2015

Technical Information 1. INSTRUCTION MANUAL FOR STORAGE, INSTALLATION, OPERATION & MAINTENANCE Product description Pressure equipment type: Stainless steel hose lines, PTFE hose lines in various versions (nominal sizes, lengths, materials, connection fittings etc.) In accordance with HANSA-FLEX nomenclature Marking (minimum scope): Manufacturer's marking (HF-I0)/ Manufacturing date (MM, YYYY) 1.1 GENERAL The hose lines are designed for the prevailing operating conditions. They are manufactured by expert personnel using proven and approved manufacturing methods. The hose lines undergo a final...

Technical Information tion. Incrustations in the medium flowing through the products can lead to corrosion damage. Incrustations also reduce the flexibility of the hose lines and lead to premature failure. A safety datasheet for the medium must be kept available. In situations with high operating temperatures, the high thermal conductivity of metallic materials means there is a risk of burns if the hose line is touched. The appropriate measures must be put in place (protection against contact, warning notices, barriers). Safety measures against whipping hose lines must also be in place. Electrically...

Technical Information 2.2 CORRECT LENGTH If the length of the hose is too short, hose lines become kinked at the connection points. A straight length of at least 1 x DN per connection point must be added to the length calculated from the bending radius. 2.3 APPROPRIATE BENDING The incorrect installation of hose lines can lead to excessive bending of the hose lines at the connections. This mistake can be avoided by the use of pipe bends. Metal hoses – Date: 10/2015

Technical Information 2.4 PREVENTION OF KINKS Laying the hose line over a saddle or a roller of the appropriate diameter prevents the hose line from kinking. 2.5 PREVENTION OF BUCKLING Incorrect installation can lead to compression of the hose on its longitudinal axis. This mistake can occur as a result of poor installation or the movement of the hose line and leads to the braiding separating from the hose. Once this happens, the pressure resistance of the hose cannot be guaranteed. Hose lines with braiding are therefore not suitable as a means of compensating for axial expansion. Axial expansion...

Technical Information 2.6 TORSIONAL MOVEMENT The greatest mistake during installation is to end up with the hose line twisting during operation. Torsional movement leads to early failure of the hose line. Ensure that the pipe and hose axes and the direction of movement lie in the same plane. During installation, the hose line must be held with a second spanner. This ensures that the hose line cannot be subjected to torsion during installation. Metal hoses – Date: 10/2015

Technical Information 3. REDUCTION FACTORS FOR METAL HOSES 3.1 DYNAMIC REDUCTION Table of dynamic reduction factors kd: No vibration, slight, slow movement Slight vibration, frequent, uniform movement Significant vibration with continuous movement Static or uniform flow Pulsating and dynamic flow Rhythmic and intermittent flow Highly intermittent flow Movement / flow 3.2 THERMAL REDUCTION Table of thermal reduction factors kt: Operating temp. °C Machining steel In acc. with DIN 3859-1 up to max. 120 °C, manufacturerdependent up to 200 °C, reduction subject to separate request

Technical Information 4. DESIGN OF METAL AND PTFE HOSE LINES 4.1 GENERAL Ensuring the safety of hose lines requires knowledge of the operating conditions and field of application. This information leads to the design, manufacture, marking, testing and documentation being appropriate for the application. The load capacity of hose lines depends on the components and methods used. The “weakest” component of the hose line determines the nominal pressure PN of the hose line. The nominal pressure is valid at 20 °C and under static loading. The maximum permissible operating temperature depends on the...

Technical Information 5. ACCOMMODATION OF THERMAL EXPANSION FOR METAL HOSE LINES Components expand when heated and contract again when cooled. Pipelines where high temperatures can prevail in addition to high pressures place increased requirements on flexible intermediate members (e.g. metal hoses). The expansion caused by heat has to be accommodated. It is essential to ensure that metal hoses are not axially loaded or buckled. The hose must be installed if possible as a 180° U-bend in order to accommodate a large axial expansion. : shows the movement of the hose line caused by thermal expansion...

Technical Information 6. FB... METAL HOSE LINES FOR THE FOOD AND CHEMICAL INDUSTRIES 6.1 TECHNICAL DATA Gap- and burr-free weld bead Nominal length 6.2 THE CRITICAL DIFFERENCE IN THE HANSA-FLEX FB... ANNULAR CORRUGATED HOSE The profile of the FB... hose type The profile of the FPC... / PC... hose type Flow during the cleaning process Wide wave with a width/height ratio = 1:1 High wave with a width/height ratio >= 1:2 Simple vortex cleans and flushes residues completely out of the corrugated profile Double vortex reduces effectiveness of cleaning and flushing residues Metal hoses – Date: 10/2015...