The DORMA BTS80EMB Floorspring has electrohydraulic hold-open and integral pressure compensation feature for multipoint hold open between 65° and 175°. With adjustable, hydraulically controlled closing speed, adjustable latching action and backcheck.
Warning: Last items in stock!
The Dorma BTS80EMB Floorspring comes with electrohydraulic hold-open and integral pressure compensation for holding open at multiple points between 65° and 175°. The unit is supplied with adjustable, fully controlled hydraulic closing speed, adjustable latching action, backcheck and a cement box as standard.
The BTS80 EMB series are floor-concealed door closers that provide an electromagnetic hydraulic hold open feature which allows doors to self-close upon the interruption of electrical current. In the event of a fire alarm activation or a power failure, the BTS 80EMB will close the doors and then act as a standard floorspring, until the alarm is reset or power is restored. The BTS80 EMB includes a selective type hold open with an approximate range of 65° to 175°.
Dorma’s BTS80 EMB is an ideal solution for a situation where an overhead door closer cannot be fitted to a fire door that needs to be held open legally. The hold open feature is electrically controlled by a fire alarm contact, so it will close in the event of an activation and help prevent the spread of smoke and fire.
• 24V DC 95mA nominal Operating Voltage
• Max Door Weight 300kg - Max Door Width 1100mm
• Designed & Fully Compliant to EN1154 & EN1155
• CE Marked
• Hold Open operation
• CERTIFIRE Approved CF127
• Concealed installation
• Multipoint hold open
• Mechanical backcheck
• Suitable for Single and Double Action Doors
• Cover Plate & Accessory Packs Sold Separately
The DORMA BTS80FLB is a floor spring with electro-hydraulic free-swing function and backcheck. It is CE marked and a power size EN4.
A high performance, low friction ball-bearing hinge. It is Grade 13, fire-rated and suitable for a maximum adjusted door weight of up to 120kg. This hinge measures 102mm x 76mm and has a satin stainless steel finish.
A 75mm diameter Satin Stainless Steel Automatic Fire Door Keep Clear Sign.