The Yale 300 Selectable door closer embodies fundamental principles of hydraulic door control, meticulously engineered for performance and compliance.
**Hydraulic Mechanics & Door Control Precision:** At its core, the Yale 300 Selectable utilizes a robust rack & pinion mechanism, driven by a high-grade hydraulic fluid system sealed within a precision-casted aluminium body. This configuration is critical for converting the door's opening energy into a controlled closing motion. The adjustable closing speed valve precisely regulates the hydraulic fluid flow for the primary sweep of the door, from its maximum opening angle of 160 degrees down to the final latching phase. Subsequently, the adjustable latching speed valve fine-tunes the door's velocity during the last 10-15 degrees of travel, ensuring positive and quiet engagement of the latch bolt without excessive force or slamming. This dual-valve system provides granular control over the door's kinetic energy dissipation, crucial for user safety and acoustic management. The non-handed design simplifies installation, ensuring consistent hydraulic function regardless of door swing direction.
**EN 1154 Compliance & Durability:** The Yale 300 Selectable's certification to EN 1154 signifies its adherence to rigorous European performance standards for controlled door closing devices. This includes criteria for operating forces, efficiency, and durability over a defined temperature range. The closer's selectable power size (EN 2 for doors up to 850mm/40kg, EN 3 for up to 950mm/60kg, EN 4 for up to 1100mm/80kg) allows installers to precisely match the closing force to the door's specifications, optimizing both functionality and user experience. This adaptability is key to meeting EN 1154 requirements across various door dimensions. Furthermore, the unit's documented 500,000 cycle test rating, obtained under EN 1154 protocols, attests to its mechanical resilience and long-term operational reliability in its intended light-duty application. It is imperative to highlight that despite EN 1154 certification and UL Listing, the Yale 300 Selectable is explicitly *not* fire-rated. This classification means it is unsuitable for integration into fire door assemblies or any application requiring compliance with fire safety standards such as EN 1634 or equivalent national fire codes. The absence of back-check, hold-open (as an integrated hydraulic function), and delayed action focuses this model on core, reliable door closing without supplementary features, simplifying its operational profile.
