Perko

Perkomatic

Powermatic

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 Perko, The Origional chain concealed door closer

 The Perkomatic automatic door closer (R85) incorporates a combined hydraulic mechanism and spring assembly and offers a controlled rate of closure and good fire resistance making it suitable for use on latched fire doors. It incorporates a latching action to overcome the resistance of the latch even when the door has been opened by only a small amount. The latching action is controlled by adjusting the point at which this action takes effect

 Perko Powermatic� is the third generation jamb mounted, concealed door closer to be developed by Samuel Heath and is without doubt our most significant innovation to date. It is our first controlled door closer and the first to carry the CE mark, providing ultimate assurance of its suitability for a variety of fire door applications:-
CE marked
Type tested to BS EN 1154: 1997. Power size 3
Opening forces comply with Approved Document M
BS EN1634-1 fire tested for one hour and half-hour fire doors
Certifire approved
Endurance tested to 500,000 closing cycles
10-year guarantee