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DORMA Floor Springs

Frequently Asked Questions

DORMA BTS extended spindles options

How do i calculate my required spindle length?

Should i use a sealing compound?

Standard & optional functions of the BTS 80

What is backcheck

What is delayed action

What is hydraulic hold-open

What is meant by leaf weight?

DORMA FLOOR SPRING BTS80 EN3 W/ ADJUSTABLE HOLD OPEN (80120000)

Product Code: DOBTS803

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This product is a special order (BTO) and is not returnable.
Description

The DORMA BTS80 EN3 floor spring body includes cement box and standard spindle. It is a universal non-handed floor spring for single and double action doors. With adjustable closing speed and closing action from approx. 175°, with hydraulically controlled closing cycle and mechnical backcheck.

Integral pressure compensation feature allows for temperature-independent hold-open between 75° and 175° (removable). Hold-open start point and delayed action is easily adjustable by valve.

Suitable for installation on doors up to 950mm (W) with a max. 300kg leaf weight.

Extended spindles - Refer FAQ

Dimensions Weight
341mm (L) x 78mm (W) x 60mm (H) 7.1kg

Technical Specifications
Brand DORMAKABA
Has Backcheck Yes
Spring Strength EN3
Fire Rated No
Has Hold-open Yes, Adjustable 75° - 175°
Max Door Width In mm 950
Maximum Weight in kg 300

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