New improved axial expansion joints from SANHA
SANHA now offers new improved axial expansion compensators for the NiroSan® and NiroTherm® pipeline systems. These new press fit compensators have a significantly better axial movement absorption capacity as well as high restoring forces.
SANHA axial expansion joints made of stainless steel have been optimized with regard to the maximum axial expansion (depending on the dimension, up to 100 % improvement compared to the previous SANHA axial compensator). For a given load and improved axial movement of between 7 and 23 mm, our new compensators have an even longer anticipated service life.
The new SANHA axial expansion joints of the series NiroSan® are made of stainless steel (material number 1.4404) with a minimum content of 2.3% molybdenum and reduced carbon content, for a higher corrosion resistance and 1.4301 (NiroTherm® series) and are available in the sizes 15 - 108 mm.
All axial compensators have integral double-sided press ends. Depending on the series and the sealing ring, the possible applications include drinking and rainwater, heating, inert gases, oil-free compressed air and industrial applications up to 16 bar operating pressure. When using axial compensators, certain basic rules apply:
- The piping system is subdivided by fixed points into individual straight partial sections, each of which can be compensated by a single axial compensator.
- Sliding anchor points are required close to either end of the axial compensator to ensure movement driven in the linear direction of the pipe run (according to the SANHA installation instructions).
- The fixed points must be designed to withstand the forces caused by the thermal changes in length of the pipe section, the compressive and spring forces of the axial compensator, the friction forces of the guide bearings and the flow forces.
- Care should be taken to consider the impact of movement on any branches of pipework and associated fittings and fixed points.
