Mab floor spring for heavy weight doors up to 300KG.
Adjustable power EN 3-6 by means of stepless governor which is coupled with high efficiency and allows a real personalization of opening / closing forces.
Two independent thermostatic valves for precise adjustment of general closing speed
Hold open at 90°,105° or non hold open.
Back check effect.
Overpressure relief valve to protect unit against abuse
Cast iron body, cement box hot zinc plated steel.
Variety of interchangeable spindles from 0-30mm, German,Italian,American.