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  • No seam on the inside
  • Conical design against Piling
  • Designed for Weighing application
  • Standard AISI 316L / DIN 1.4404
  • Available in Silicone & EPDM
  • Standardized Sizes
  • Does not require a separate gasket
  • Metal rings can be re-used
  • Standardized Sizes
  • Antistatic EPDM version

Hecht Tri-clamp.

The Hecht Tri-Clamp Bellow is molded from one piece, providing its own seal, meaning a separate gasket ring is no longer required. It is designed for optimal hygiene and to create optimal weighing results. These bellows have a conical asymmetrical design. The bottom angle of 60° prevents powder collection, piling or blockage. No powders can remain behind, which is possible with the conventional spherical bellow.

These bellows are suitable for contact with foodstuffs. The bellow is available for Tri-Clamp connection and is pressure resistant up to 100 mbar. It is suitable for CIP.


The HECHT tri-clamp and the HECHT hose clamp can be produced in silicone as well as EPDM, as well as Black Antistatic food contact compliant EPDM.

For more information please go to our Materials Comparison Table.

Materials comparison table


Size A (mm) B (mm) C (mm) D (mm)
DN 80 106 63 81 106
DN 100 161 90 100 119
DN 150 214 110 150 183
DN 200 265 130 202 233,5
DN 250 314 110 250 268
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