Related Products
Godrej Dyna Surface-Mounted Hydraulic Door Closer with Adjustable Hold-Open Functionality
The Godrej Dyna Door Closer Hold Open Size 4 is an EN1154 certified, surface-mounted hydraulic unit engineered for precise control of wood and metal doors up to 80kg and 1100mm width. Featuring independently adjustable closing and latching speeds, alongside an integrated hold-open function, it delivers reliable door management with a robust 500,000 cycle durability rating.
Quick Answer
The Godrej Dyna Door Closer Hold Open Size 4 excels in providing reliable, adjustable hydraulic door control for medium-weight doors, backed by EN1154 compliance and a versatile hold-open feature.
✓EN1154 Certified Hydraulic Performance for doors up to 80kg/1100mm.
✓Integrated Hold-Open Functionality at angles up to 160 degrees.
✓Precision Adjustable Closing and Latching Speeds via independent valves.
✓Robust Aluminium Alloy Construction with 500,000 Cycle Durability.
✓Non-Handed Design for Versatile Surface Mounting on Wood or Metal Doors.
The Godrej Dyna Door Closer Hold Open Size 4 stands as a reliable, EN1154-certified, and cost-effective solution for standard door control in non-fire-rated environments. Its robust Aluminium Alloy construction, precise hydraulic adjustability, and integrated hold-open feature, combined with a half-million cycle durability, make it a strong contender for general-purpose applications requiring consistent and controlled door management.
✓ Who Should Buy
- •Facility managers seeking EN1154-compliant hydraulic door control for medium-weight internal or external doors (non-fire-rated).
- •Building owners requiring a durable and adjustable door closer with a convenient hold-open feature for high-traffic, standard-use entrances.
- •Installers needing a versatile, non-handed surface-mounted unit compatible with both wood and metal doors up to 80kg and 1100mm width.
- •Projects prioritizing cost-effectiveness without compromising on certified performance and long-term reliability in non-fire-critical areas.
✕ Who Should Avoid
- •Applications on fire-rated door assemblies, as this model is explicitly not fire-rated and would compromise fire safety compliance.
- •Installations requiring advanced door control functions such as back check or delayed action, which are not integrated into this model.
- •Heavy-duty industrial doors exceeding 80kg or 1100mm in width, which necessitate higher power sizes (e.g., EN 5 or EN 6) to meet performance requirements.
- •Installations in extreme environmental conditions (e.g., very high or low temperatures) for which specific operating temperature ranges are not specified.
Product Overview
The Godrej Dyna Door Closer Hold Open Size 4 is a meticulously engineered surface-mounted hydraulic door closer, designed to provide consistent and controlled door operation for a wide range of standard applications. Constructed from a durable Aluminium Alloy with a resilient PU/Silver finish, this non-handed unit is optimized for both wood and metal doors weighing up to 80kg and measuring up to 1100mm in width. It boasts a power size EN 4, offering an adjustable force range spanning EN 2 to EN 4, providing adaptability for varying door dynamics. Operators benefit from independent, adjustable hydraulic valves controlling both the initial closing speed (from 180° to 15°) and the final latching speed (from 15° to 0°), allowing for precise customization of the door's closing cycle to prevent slamming and ensure secure closure. An integrated hold-open arm provides practical convenience, enabling the door to remain open at user-defined angles up to 160 degrees. Manufactured in India, the Godrej Dyna series closer proudly adheres to the rigorous European standard EN 1154 and carries CE certification, affirming its compliance with essential performance, health, and safety requirements. It is critical to note that while robust and durable, this model is not fire-rated, making it suitable for non-fire-rated door assemblies. Its impressive 500,000 cycle test rating underscores its long-term reliability in high-traffic, non-fire-critical environments.
| Brand | godrej |
| Model Name | N/A |
| Category | Door Closer |
| Closer Type | Hydraulic with Hold Open |
| Series | Dyna |
| Model Year | 2018-2026 |
| Country Of Origin | N/A |
| Intended Use | Surface Mounted Door Closer |
| Suitable For | Wood/Metal Doors |
Related Products
Engineering Analysis
The Godrej Dyna Door Closer Hold Open Size 4 represents a highly functional hydraulic control mechanism engineered for consistent, reliable door operation. At its core, the unit leverages a pressurized hydraulic system within an Aluminium Alloy body, wherein a non-compressible fluid is displaced through adjustable valves by the door's motion. This allows for precise attenuation of the spring-return mechanism.
Hydraulic Mechanics & Precision Control: This closer features two independently adjustable hydraulic valves. The first valve regulates the sweep speed, governing the door's motion from its maximum opening angle (up to 160 degrees) down to approximately 15 degrees. The second valve controls the latching speed, ensuring controlled acceleration in the final 15 degrees of closure to overcome latch resistance without slamming. The integration of a hold-open arm facilitates user convenience, maintaining the door in an open position at a chosen angle, which is essential for temporary access or ventilation. Notably, the absence of back check and delayed action indicates a design focused on straightforward, reliable closing functionality, prioritizing essential door control over advanced traffic management features.
EN1154 Compliance & Performance Metrics: This closer is certified to EN 1154, the European standard specifying requirements for controlled door closing devices. This certification ensures the device meets stringent criteria for durability, operating forces, closing performance, and safety parameters. It is rated as a Power Size 4 closer, optimally suited for doors up to 80kg and 1100mm width, aligning with EN1154 guidelines. The adjustable force range spanning EN 2 to EN 4 further enhances its versatility, allowing installers to fine-tune the closing force to match specific door dimensions, weight, and environmental conditions while remaining compliant with the standard. A critical performance metric is its 500,000-cycle test rating, demonstrating exceptional mechanical durability and a prolonged service life, making it suitable for demanding, high-frequency applications.
Material Science & Build Quality: Constructed from a high-grade Aluminium Alloy, the closer body provides an optimal balance of strength, lightweight characteristics, and resistance to corrosion, further enhanced by its PU/Silver finish. Its non-handed design simplifies inventory management and installation, eliminating the need for handed-specific units and ensuring universal application on both left and right-hand opening doors. The surface-mounted configuration offers straightforward installation or retrofitting on a wide variety of door and frame types.
Application Context & Limitations: While engineered for robust performance and certified to EN 1154, it is imperative to note that the Godrej Dyna Door Closer Hold Open Size 4 is explicitly not fire-rated. This fundamental characteristic dictates its suitability strictly for non-fire-rated door assemblies. Its absence of specified operating temperature ranges suggests its design is optimized for standard indoor and moderate outdoor environments, not for extreme climatic conditions.
Technical Support & FAQs
Engineering Analysis
The Godrej Dyna Door Closer Hold Open Size 4 represents a highly functional hydraulic control mechanism engineered for consistent, reliable door operation. At its core, the unit leverages a pressurized hydraulic system within an Aluminium Alloy body, wherein a non-compressible fluid is displaced through adjustable valves by the door's motion. This allows for precise attenuation of the spring-return mechanism.
Hydraulic Mechanics & Precision Control: This closer features two independently adjustable hydraulic valves. The first valve regulates the sweep speed, governing the door's motion from its maximum opening angle (up to 160 degrees) down to approximately 15 degrees. The second valve controls the latching speed, ensuring controlled acceleration in the final 15 degrees of closure to overcome latch resistance without slamming. The integration of a hold-open arm facilitates user convenience, maintaining the door in an open position at a chosen angle, which is essential for temporary access or ventilation. Notably, the absence of back check and delayed action indicates a design focused on straightforward, reliable closing functionality, prioritizing essential door control over advanced traffic management features.
EN1154 Compliance & Performance Metrics: This closer is certified to EN 1154, the European standard specifying requirements for controlled door closing devices. This certification ensures the device meets stringent criteria for durability, operating forces, closing performance, and safety parameters. It is rated as a Power Size 4 closer, optimally suited for doors up to 80kg and 1100mm width, aligning with EN1154 guidelines. The adjustable force range spanning EN 2 to EN 4 further enhances its versatility, allowing installers to fine-tune the closing force to match specific door dimensions, weight, and environmental conditions while remaining compliant with the standard. A critical performance metric is its 500,000-cycle test rating, demonstrating exceptional mechanical durability and a prolonged service life, making it suitable for demanding, high-frequency applications.
Material Science & Build Quality: Constructed from a high-grade Aluminium Alloy, the closer body provides an optimal balance of strength, lightweight characteristics, and resistance to corrosion, further enhanced by its PU/Silver finish. Its non-handed design simplifies inventory management and installation, eliminating the need for handed-specific units and ensuring universal application on both left and right-hand opening doors. The surface-mounted configuration offers straightforward installation or retrofitting on a wide variety of door and frame types.
Application Context & Limitations: While engineered for robust performance and certified to EN 1154, it is imperative to note that the Godrej Dyna Door Closer Hold Open Size 4 is explicitly not fire-rated. This fundamental characteristic dictates its suitability strictly for non-fire-rated door assemblies. Its absence of specified operating temperature ranges suggests its design is optimized for standard indoor and moderate outdoor environments, not for extreme climatic conditions.