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skip to Dorma Floor Spring BTS 75V (Mechanism Only) with 90 Deg Hold Open

Dorma Floor Spring BTS 75V (Mechanism Only) with 90 Deg Hold Open

£238.80

(£199.00 ex VAT)

sku: L14887
  • Integrated 90-degree hold-open function for convenience in high-traffic areas
  • Adjustable spring strength (EN 1-4) via a single screw for precise control
  • Universal design suitable for left-hand, right-hand, single and double action doors
  • Accommodates door weights up to 120kg and widths up to 1100mm
  • Mechanism-only unit designed for direct replacement or custom configuration
  • Variable closing speed adjustment to suit specific environmental requirements
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When ordering multiple Keyed Alike locks, only 1 set of keys are provided as all additional locks are made to work from that key.

If ordering 4 or more keyed alike locks you can have them set up as different groups. If Required: Let us know the details in the "Specific Key Requirements" field above.

Each group of locks will then receive keys.

The Dorma BTS 75V is a highly versatile floor spring mechanism designed to provide concealed door control for a wide variety of applications. This specific unit features an integrated 90-degree hold-open function, making it an ideal choice for commercial environments where doors need to remain open during peak traffic periods. This product is supplied as the mechanism only, making it a perfect solution for replacing worn internal units within an existing cement box.

Functionality is a key feature of the BTS 75V, offering adjustable spring tension (EN 1-4) that can be easily tuned in-situ using an adjustment screw. This allows the closer to be calibrated for different door weights and widths without removing the unit. It is compatible with both single and double action doors and is suitable for door weights up to 120kg.

  • Compatibility: Suitable for timber, metal, and glass doors when used with appropriate straps and top pivots.
  • Adjustability: Includes independent valves for closing speed and latching action.
  • Installation: Universal design facilitates use on both left and right-hand doors.

Please note that for new installations, a cement box and cover plate are required separately. This mechanism is intended for professional use where durable, high-performance door control is essential.

FAQs

This product includes the core BTS 75V floor spring mechanism and its cement box. It does not include the cover plate or spindle. If you are performing a complete new installation, you will also need to purchase a separate accessory kit to complete the setup.

Designed for durability and high performance, the Dorma BTS 75V is suitable for the following door specifications:

  • Maximum door weight: 120 kg
  • Maximum door width: 1100 mm

Yes. The BTS 75V is universal in its application. It can be used for left-hand (LH) and right-hand (RH) single action doors, as well as double action doors, offering a flexible solution for various architectural requirements.

This specific model is equipped with a 90-degree hold-open feature. When the door is opened to 90 degrees, the mechanism will lock into place to keep the door open. This is particularly useful for high-traffic areas or environments where you need to keep a clear passage for extended periods.