Dorma Floor Spring BTS80 with Adjustable Hold Open
The Dorma BTS80 is a heavy duty, universal non-handed floor spring designed for single and double action doors. Featuring mechanical backcheck and an adjustable, removable hold-open function, the BTS80 is selected for large, heavy or high-traffic commercial doors where controlled closing and durability are critical.
Key Features
- Heavy duty floor spring for high-weight and wide doors.
- Mechanical backcheck for door and frame protection.
- Adjustable, removable hold-open between 75° and 175°.
- Universal non-handed design for single and double action doors.
Specifications
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Suitable Uses
- Heavy commercial doors.
- Wide doors and high-traffic entry points.
- Doors exposed to wind or draught conditions.
Available Variants
Item Code Family
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Frequently Asked Questions
DORMA BTS extended spindle options
Extended spindles are used where additional height is required due to thicker floor finishes, raised thresholds, or non-standard installation depths.
Should I use a sealing compound?
Yes. The use of DORMA 2300 Sealing Compound prevents moisture penetration by filling cavities between the floor spring body and the cement box.
This is mandatory in certain applications such as wet rooms (for example, as required under VOB regulations).
Product code: DO2300
What is backcheck?
The integrated mechanical backcheck function protects the wall, frame and door from damage caused by excessively vigorous opening.
What is delayed action?
Delayed action slows the door closing speed for a short period, allowing easier passage for disabled persons, parents with prams, staff with trolleys, hospital beds or similar equipment.
What is hydraulic hold-open?
Hydraulic hold-open allows the door to be held open at any angle between 75° and 175°. The angle at which hold-open begins can be adjusted, typically within the 75° to 105° range.
What is meant by leaf weight?
Leaf weight refers to the total weight of the door leaf, including glass, framing and fittings. The floor spring must be selected to suit the actual door leaf weight, not just door width.
Additional Information
- The BTS80 is the preferred choice for heavy duty commercial door installations.
- Extended spindles are available for thicker floor finishes.
- Commonly specified in Australian commercial and industrial buildings.
dormakaba Warranty
dormakaba Australia Pty Ltd (ABN 14 067 969 466) provides the following warranty on all dormakaba branded products sold in Australia. This warranty is in addition to, and does not limit, your rights under the Australian Consumer Law.
Warranty Summary
How to Make a Claim
- Report the defect promptly. Contact Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries (including Gold Coast Smart Locks) as your point of sale in the first instance. Claims must be lodged no later than 1 month from the date the defect becomes obvious.
- Prepare your documentation. You will need proof of purchase (invoice or receipt), the date of delivery or installation, your name and address, and any maintenance records relevant to the product.
- Make the product available for inspection. dormakaba requires adequate access to the goods, fittings, and fixtures to assess any warranty claim and carry out repairs. If no fault is found, dormakaba's standard costs for inspection, service, and testing apply.
- Warranty work is conducted during normal business hours � 8:00am to 5:00pm, Monday to Friday.
Note: The expense of making a warranty claim (including transport and access costs) is borne by the purchaser.
Exclusions
This warranty does not cover:
- Damage or defects caused by misuse, abuse, neglect, or failure to follow dormakaba's selection, installation, and maintenance instructions
- Fair wear and tear
- Damage arising from installation not carried out by dormakaba or its authorised agents
- Damage caused to the structures the product is installed in, where installation was not by dormakaba or its authorised agents
- Damage caused by circumstances beyond dormakaba's control
- Defects within acceptable industry variances
- Products used other than for their intended purpose
- Damage from exposure to abnormal conditions, including but not limited to extreme temperature, water, fire, humidity, pressure, or stress
- Products that have been modified, built on, or repaired by a third party
- Products not maintained in accordance with dormakaba's care, cleaning, and maintenance instructions (as amended from time to time on the dormakaba website)
- Routine maintenance items (the purchaser's responsibility)
- Products installed, maintained, or operated other than in accordance with dormakaba's instructions
- Overhaul, replacement, or repair work carried out prior to dormakaba's approval of a warranty claim
Important Notes
In Australia, our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure, and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have goods repaired or replaced if they fail to be of acceptable quality and the failure does not amount to a major failure. Nothing in this warranty limits or excludes these statutory rights.
dormakaba reserves the right to replace defective parts with components of similar quality, grade, and composition where an identical part is unavailable. Refurbished parts or goods of the same type may be used. For discontinued or unavailable products, dormakaba may substitute an equivalent current product. All products replaced under warranty become the property of dormakaba.
