Dorma BTS75V Universal Floor Spring – Body Only

Dorma BTS75V Floor Spring – Adjustable Power, Concealed Control for Internal Doors
The dormakaba BTS75V floor spring is a versatile, fully concealed door closing solution designed for both single and double action doors. With adjustable closing power (EN 1–4), mechanical backcheck, and Certifire Approval (non-hold open model), the BTS75V offers safe and discreet performance in commercial, retail, and public buildings.

Ideal for environments where aesthetics and reliability are essential, this floor spring is suitable for doors up to 1100mm wide and 120kg. Its compact body and concealed installation allow for a clean floor finish, with enhanced safety and durability.

Key Features & Benefits:

Adjustable Closing Power (EN 1–4):
Spring tension can be set during installation to suit door size and weight – up to 1100mm wide and 120kg. Perfect for varied internal applications.

Concealed Design:
Discreetly installed beneath the floor for a sleek, modern appearance. No bulky hardware visible when the door is closed.

Single or Double Action Compatibility:
Universal mechanism supports both single and double action doors. Installation is non-handed and adaptable to suit a wide range of configurations.

Multiple Mechanism Options:

• Non-Hold Open (Certifire Approved – CF127)

• Fixed 90° Hold Open (not fire door compliant)

• Fixed 105° Hold Open (not fire door compliant)

Mechanical Backcheck:
Protects the door and surrounding structure from forceful openings, prolonging the life of the installation and improving user safety.

Valve Adjustable Closing Speed:
Allows fine tuning of the door’s closing motion, ensuring smooth and controlled operation.

Compact Dimensions:
Size: 582mm x 82mm x 50mm – 10mm shallower than the BTS80F, ideal for shallow floor installations.
Weight: 3kg

Compliant & Certified:

• Tested to EN 1154

• CE marked*

• UKCA marked*

• Certifire Approved (Non-hold open model only)

Accessories Sold Separately:
Cover plate, top centre, bottom strap, and extended spindles available. Use drop-down options to order with or without a standard spindle.

Ideal Applications:

• Retail centres and commercial spaces

• Public buildings, museums, and galleries

• Offices, showrooms, and interior glazed doors

• Double action or frameless glass doors

• Fire doors (non-hold open model only)

Installation & Compliance Notes:

• Ensure you select the non-hold open mechanism for fire-rated applications and pair it with the correct intumescent kit.

• Use BTS75 accessory packs for a complete installation – contact our team if unsure which components you need.

• Always install to manufacturer guidelines for full compliance with EN1154 and Certifire standards.

Automagic Door Parts recommends professional installation for long-term safety and performance. If your project requires increased weight capacity or special functionality, consider alternatives such as the BTS80F (for heavier doors), BTS80EMB (electromagnetic hold open), or the ITS96 concealed closer.