BTS75V Floor Spring

The DORMA BTS 75 V is a highly adaptable floor spring suitable for all standard single-, and double-action doors with widths up to 1100 mm, with its closing force individually regulated by means of an adjustment screw. Certified manufacture to ISO 9001.

Whether standard, narrow or wide, whether LH, RH, or single or double-action – the DORMA BTS 75 V door spring is designed for all types of doors. A comprehensive program of accessories ensures that it can be used successfully with a wide variety of door constructions and floor coverings.

Specifications

  • Finish: Satin Stainless Steel

  • Max Door Weight: 120kg

  • Max Door Width: EN4-1100mm

  • Adjustable Spring Strength: EN1-4

  • Hold Open Angle: 90 deg / 105 deg

  • Closing speed variable by valve adjustment

       0 to 15 deg

      15 to 175 deg

Technical Specifications

BTS84 Floor Spring

DORMA economic floor spring for double action doors, with removable spindle insert.

Specially designed for the movement patterns of double action doors, the BTS 84 can be easily adapted to suit individual requirements. With an overall depth of just 40 mm, it offers the particular advantage of only requiring a shallow floor recess for installation, including for upgrading.

Specifications

  • Finish: Satin Stainless Steel

  • Max Door Weight: 100kg

  • Max Door Width: EN3 - 900mm / EN4 - 1100mm

  • Hold Open Angle: 90 deg

  • Closing speed variable by valve adjustment

  •        0 to 20 deg

  •       20 to 130 deg

Technical Specifications

BTS80 Floor Spring

Floor spring system for single and double leaves doors.

As a universal floor spring, the BTS 80 has been designed to meet the requirements of doors of all types. With its many individually combinable extras, it is able to satisfy almost every application requirement. Once installed below floor level, the mechanism is almost completely concealed from view.

Certified manufacture to ISO 9001.

Specifications

  • Finish: Satin Stainless Steel

  • Max Door Weight: 300kg

  • Max Door Width: EN4 - 1100mm / EN6 - 1400mm

  • Hold Open Angle: 75 to 105 deg

  • Closing speed variable by valve adjustment         0 to 175 deg

Technical Specifications

BTS Accessories

Dorma AL Accessories for BTS84 Floor Spring suitable for aluminium, steel or timber door use.

Specifications​

  • Max Door Weight: 100kg

  • Max Door Width: EN4 - 1100mm

Technical Specifications