KRS-32 PN 16

Cardan Hinged-Flanged End

Angular expansion joints are specially designed expansion elements with flexible movement capabilities, used to control thermal expansion in piping systems. These joints safely absorb expansion in the system by converting axial movement into angular motion in a plane perpendicular to the pipe axis. In doing so, they help preserve the structural integrity of the pipeline and minimize the adverse effects of thermal stresses.

Angular expansion joints are primarily used to accommodate angular movements in a single plane (e.g., perpendicular to the pipeline). However, with special designs, it is also possible to absorb movements occurring in multiple directions. In this regard, they offer flexible solutions tailored to the system’s needs and are suitable for a wide range of applications.

System configurations using two or more angular expansion joints together provide high performance, especially in long-distance pipelines and applications with significant thermal expansion. These combinations make it possible to safely and effectively absorb large amounts of thermal movement.

Additionally, when used in conjunction with fixed points and direction-changing elements, the durability and service life of the system are significantly enhanced.

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Technical Information

Standard Production: AISI 321 – DIN 1.4541
Custom Production: AISI 304 (DIN 1.4541), AISI 309 (DIN 1.4828), AISI 316 (DIN 1.4401), AISI 316 Ti (DIN 1.4571), etc.

Design Pressure: 16 BAR
Design Temperature: –196 to +550 °C

Standard Flange: Rst 37-2 (DIN 1.0038)
Custom Flange: Stainless Steel according to DIN – BS – EN – ANSI standards, etc.

Standard Hinge: Rst 37-2 (DIN 1.0038)
Custom Hinge: AISI 304 (DIN 1.4541), AISI 309 (DIN 1.4828), AISI 316 (DIN 1.4401), AISI 316 Ti (DIN 1.4571), etc.

Brush Brush

Technical Drawing

Cog Cog

Applications

Lateral expansion joints absorb lateral movements in piping systems, reducing stress and vibration-induced noise within the system. They are reliably used in all types of machinery, engines, pumps, industrial process lines, exhaust systems, gas and water installations, as well as in potable water applications.

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Painting Information

All bellows, hinge, and flange components are coated with a special protective paint against corrosion in all sizes. This coating ensures long-term durability, especially in systems exposed to outdoor environmental conditions. Surface treatments are meticulously applied in accordance with quality and safety standards.

Attention Attention

Special Note

Design temperatures can be increased up to +950 °C upon request. For special operating conditions, please contact our technical team. For flange dimensions, refer to the “Useful Technical Tables” section. Product weights are subject to a tolerance of ±10%.

Diameter
DN Ø		 Length
L (mm)		 Welding End Sizes
Ø D x s (mm)		 Flange Outer Diameter
H (mm)		 Angular Movement +/-
(°)		 Angular Force
(Nm/°)		 Bellow Effective Area
(cm²)		 Flange Center to Center
(mm)		 Hole Ø
Flanş (mm)		 Flange Hole Quantity Flange Thickness
(mm)		 Approx. Weight
(kg)
25 250 33.7×2.6 185 25 0.3 24 85 14 4 14 6.0
32 250 42.4×2.6 195 25 0.4 27 100 18 4 18 6.5
40 250 48.3×2.6 200 25 0.6 30 110 18 4 18 7.0
50 260 60.3×2.9 205 25 0.7 33 125 18 4 18 7.5
65 285 76.1×2.9 215 25 0.9 48 145 18 4 18 9.5
80 290 88.9×3.2 265 20 1.9 74 160 18 8 18 18.0
100 305 114.3×3.6 295 20 2.4 110 180 18 8 18 23.0
125 315 139.7×4.0 335 15 4.9 153 210 18 8 18 31.5
150 335 168.3×4.5 375 15 8.8 231 240 22 8 22 43.0
200 390 219.1×6.3 450 15 12.8 412 295 22 12 22 78.0
250 390 273.0×6.3 520 15 23.5 610 355 26 12 26 95.0
300 415 323.9×7.1 575 10 71.5 978 410 26 12 26 118.0
350 415 355.6×8.0 715 8 86.5 1163 470 26 16 26 155.0
400 415 406.4×8.0 755 8 115.0 1492 525 30 16 30 205.0
450 415 457.2×10.0 795 6 147 1863 585 30 20 30 250.0
500 600 508.0×10.0 965 6 181 2269 650 33 20 33 370.0