Dormakaba Floor Spring BTS80F EN6 – No Hold Open
The Dormakaba BTS80F EN6 is a universal floor spring supplied with a cement case, designed for heavy duty door control with fully hydraulic closing action from 180 degrees. It provides adjustable closing speed and adjustable latching action by valve, supported by a mechanical backcheck to help manage rapid opening.
This model is specified as no hold open and uses interchangeable spindle inserts. It is suitable for fire and smoke check door installations where the distance to the door hinge pivot is 36 mm, subject to additional approval for the specific doorset.
Key Features
- Universal floor spring supplied with cement case.
- Fully hydraulic control of the closing action from 180 degrees.
- Adjustable closing speed and adjustable latching action via valve adjustment.
- Mechanical backcheck to help control fast opening.
- Interchangeable spindle inserts for installation flexibility.
- No hold open function.
- Suitable for fire and smoke check doors with hinge pivot distance of 36 mm, subject to additional approval.
Fire Rated
- Suitable for fire and smoke check doors with additional approval required for the specific doorset.
- For legally approved fire door assemblies, comply with the requirements of the relevant approval documentation for the door assembly.
Specifications
- Item Code: DOBTS80F6
- Product Type: Floor spring (universal)
- Spring Strength: EN6
- Hold Open: No
- Backcheck: Yes (mechanical)
- Closing Control: Fully hydraulic closing action from 180 degrees
- Adjustments: Closing speed and latching action adjustable by valve
- Maximum Door Width: 950 mm
- Maximum Door Leaf Weight: 300 kg
- Fire Rated: Yes, with additional approval
What's In The Box
- 1 × BTS80F EN6 floor spring body
- 1 × Cement case
- Interchangeable spindle inserts
Suitable Uses
- Heavy duty single action or double action doors requiring floor spring control.
- Fire and smoke check door installations where hold open is not permitted.
- Commercial doors where door mass and traffic require EN6 closing force.
- Sites needing adjustable closing and latching control for door compliance and user safety.
Dimensions
| Dimension | Size |
|---|---|
| Length | 341 mm |
| Width | 78 mm |
| Height | 60 mm |
Frequently Asked Questions
- Does this floor spring hold the door open?
No. This BTS80F EN6 model is specified as no hold open. - Can this be used on fire and smoke check doors?
Yes, but an additional approval of suitability is required for the specific fire and smoke check doorset, and installation must follow the applicable approval documentation. - Are extended spindles available?
Extended spindles are referenced for this floor spring, and are typically used when additional height or floor build-up needs to be accommodated. Confirm spindle selection to suit the door and floor build-up before ordering.
Additional Information
- Floor springs rely on accurate box positioning and correct pivot distance. Small layout errors can cause binding or poor latch performance.
- On heavy doors, careful adjustment of closing speed and latching action helps prevent slam while still achieving reliable latch engagement.
- Where finished floor levels vary (tiles, ramps, overlays), spindle selection is commonly checked early to avoid rework after the floor is poured.
