The Godrej Hydraulic Closer with Backcheck represents a robust engineering solution for modulated door closure, underpinned by a precision hydraulic system. At its core, the unit utilizes hydraulic fluid dynamics, controlled by independently adjustable valves, to manage energy dissipation during the door's arc of motion. The closing speed control valve precisely meters the flow of hydraulic fluid, dictating the door's speed from its maximum opening angle down to approximately 15 degrees. Subsequently, the latching speed control valve takes over, fine-tuning the final few degrees of travel to ensure a secure and controlled engagement with the door frame latch, preventing slamming and maximizing security.
A critical integrated feature is the hydraulic backcheck mechanism. This internal damping system engages when the door is opened beyond a pre-set angle (typically between 70-85 degrees), creating a resistance that cushions the door's opening swing. This protective function prevents the door from being flung open aggressively, mitigating potential damage to the door, frame, adjacent walls, and the closer itself, extending the overall service life of the door assembly.
Compliance with EN1154 standards signifies that the Godrej Hydraulic Closer with Backcheck adheres to stringent European performance and safety requirements for controlled door closing devices. This certification confirms its ability to provide controlled closing across its specified adjustable power range of EN 2-4, catering to doors with varying weights up to 100 kg and widths up to 1200 mm. The EN1154 standard also mandates a cycle test rating, for which this closer achieves an impressive 500,000 cycles, validating its mechanical endurance and long-term operational reliability under continuous use. The non-handed design simplifies installation logistics, allowing for universal application irrespective of door swing direction.
It is paramount to note that while designed for high-performance door control, the Godrej Hydraulic Closer with Backcheck is explicitly not fire-rated. This classification is crucial for specification, indicating it is suitable for applications where fire compartmentation is not a primary safety requirement. The robust aluminium alloy construction and fully adjustable valves underscore its design for precise and reliable kinetic energy management in a wide range of non-fire-rated door installations.
