Yale YDC2022 HO Surface-Mounted Hydraulic Door Closer with Hold Open Arm

The Yale YDC2022 HO hydraulic door closer exemplifies precision engineering in controlled door deceleration. Its fundamental **rack & pinion mechanism**, housed within a durable aluminium body, is immersed in a specialized hydraulic fluid. This sealed system is crucial for its consistent performance; as the door opens, hydraulic fluid is displaced and then precisely metered through adjustable internal valves during closure. The **adjustable closing and latching speeds** are not merely superficial features but represent critical hydraulic bypass mechanisms, allowing technicians to fine-tune the door's momentum, ensuring a smooth, controlled arc and a secure latch without slamming. Crucially, the YDC2022 HO holds **EN 1154 certification**, signifying adherence to rigorous European standards for door closing devices. This standard dictates performance, durability, and safety parameters, ensuring the closer's ability to operate effectively through its adjustable **power size range of EN 2-4**. This flexibility allows the YDC2022 HO to precisely manage doors with widths from 750mm to 1100mm and weights up to 80kg, providing optimal closing force for diverse applications while maintaining energy efficiency. Furthermore, its **fire-rated designation** is a testament to its structural integrity and operational reliability under elevated temperatures, critical for compartmentalization in fire safety strategies. The validation of its durability is underscored by a robust **500,000-cycle test rating**, confirming its long-term reliability in high-traffic environments. While equipped with a functional hold-open arm, the absence of back-check and delayed action underscores its design focus on fundamental, precise hydraulic control for standard closing cycles, prioritizing robust reliability and fire safety compliance.