The DORMA BTS80EMB Floor spring has electrohydraulic hold-open and integral pressure compensation feature for multipoint hold open between 75° and 175°. With adjustable, hydraulically controlled closing speed, adjustable latching action and backcheck.
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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.
The Dorma BTS80EMB Floor spring with electrohydraulic hold-open and integral pressure compensation feature for multipoint hold open between 75° and 175°. With adjustable, hydraulically fully controlled closing speed, adjustable latching action, backcheck; including cement box.
Electromagnetic hydraulic hold open feature
The BTS80 EMB Series of floor-concealed door closers provide an electromagnetic hydraulic hold open feature, allowing doors to self-close upon the interruption of electrical current. Once the alarm has been activated or a on a power failure, the BTS 80EMB will close the doors and then perform as a standard floorspring, until the alarm is reset or power restored. The BTS80 EMB includes a selective type hold open with a range of approximately 65° to 175°.
Designed for fire/life safety applications
The BTS80 EMB is specifically designed to be used in fire/life safety applications where the hold open is electrically controlled by a fire alarm contact. The closer is typically placed into the hold open position until a fire alarm condition.
• 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
• Cover plate not included