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Godrej Dyna Door Closer Size 4: Engineering Analysis of a Surface-Mounted Hydraulic Door Control Unit
The Godrej Dyna Door Closer Size 4 is a robust surface-mounted hydraulic unit, meticulously engineered for precision door control on wood and metal doors up to 80kg and 1100mm width. Adhering to EN1154 standards, it features adjustable closing and latching speeds for optimized operational dynamics and certified durability, validated by a 500,000 cycle test rating.
Quick Answer
The Godrej Dyna Door Closer Size 4 delivers reliable, EN1154-compliant hydraulic door control for medium-duty applications, emphasizing adjustable speed precision.
✓EN1154 Certified Hydraulic Control for Consistent Performance
✓Precise Adjustable Closing and Latching Speeds
✓Demonstrated Durability with 500,000 Cycle Test Rating
✓Versatile Non-Handed, Surface-Mounted Installation
✓Engineered for Wood/Metal Doors up to 80kg and 1100mm Width
The Godrej Dyna Door Closer Size 4 is a robust and EN1154-compliant hydraulic door control solution, offering precise speed regulation for general-purpose applications. Its tested durability and adjustable features make it a reliable choice for medium-traffic wood and metal doors where advanced functionalities like back-check or fire rating are not prerequisites.
✓ Who Should Buy
- •Facilities managers requiring EN1154-compliant closers for internal office, residential, or light commercial wood/metal doors.
- •Architects specifying cost-effective, durable door control for standard, non-fire-rated access points.
- •Maintenance professionals seeking easily adjustable hydraulic door closers for existing installations or replacements.
✕ Who Should Avoid
- •Applications demanding fire-rated door closer performance and certification for life safety.
- •Installations where mandatory features like back-check, hold-open, or delayed action are required for door protection or accessibility.
- •Heavy-duty commercial or high-traffic industrial doors exceeding 80kg/1100mm, which necessitate higher power sizes or more robust duty cycles.
Product Overview
The Godrej Dyna Door Closer Size 4 represents a critically engineered hydraulic solution for controlled door closing, designed for universal application across wood and metal substrates. Constructed from a durable Aluminium Alloy body with a PU/Silver finish, this surface-mounted unit is non-handed, simplifying inventory and installation processes. It is rated as a Size 4 power closer, with an adjustable force range spanning EN1154 sizes 2 to 4, accommodating doors up to approximately 80kg in weight and 1100mm in width. Key operational parameters, including closing speed and latching speed, are independently adjustable via integrated valves, enabling precise control over the door's closing arc and final engagement. While providing essential controlled closure, it is important to note that the Godrej Dyna Door Closer Size 4 does not incorporate back-check, hold-open, or delayed action functions, nor is it rated for fire door applications. Its design prioritizes reliable, consistent performance as evidenced by a 500,000 cycle test rating, underscoring its long-term operational integrity.
| Brand | godrej |
| Model Name | N/A |
| Category | Door Closer |
| Closer Type | Hydraulic |
| Series | Dyna |
| Model Year | 2018-2026 |
| Country Of Origin | N/A |
| Intended Use | Surface Mounted Door Closer |
| Suitable For | Wood/Metal Doors |
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Engineering Analysis
The Godrej Dyna Door Closer Size 4 is fundamentally a hydro-mechanical device designed for controlled energy dissipation during door closure. Its core functionality relies on a high-grade Aluminium Alloy housing, encapsulating a precisely engineered hydraulic system. The hydraulic mechanism employs an advanced sealing system, ensuring containment of the hydraulic fluid under varying temperature and pressure conditions, thereby guaranteeing consistent damping performance throughout its operational lifespan.
EN1154 Compliance and Power Classification: This door closer is designed to meet the stringent requirements of the EN1154 European standard for controlled door closing devices, specifically categorized as an EN1154 Size 4 unit. This classification indicates its suitability for a defined range of door widths and weights, precisely up to 1100mm and approximately 80kg. The adjustable force range (EN1154 sizes 2-4) allows for nuanced adaptation to site-specific conditions, ensuring optimal closing force without excessive resistance, aligning with the performance criteria stipulated by EN1154 for safety and usability.
Door Control Precision and Hydraulic Valving: The precision of door control is achieved through two independently adjustable hydraulic valves: one for the closing speed (sweep speed) and another for the latching speed (final closing phase). These valves regulate the flow rate of the hydraulic fluid, allowing installers to fine-tune the door's movement from an opening angle of up to 160 degrees down to the fully closed and latched position. This granular control prevents abrupt slamming, protects door hardware, and ensures secure latching, critical for security and energy efficiency.
Durability and Functional Scope: The design is optimized for longevity, validated by a robust 500,000 cycle test rating, far exceeding the requirements for many commercial applications and indicating a high degree of material and component resilience. The non-handed design simplifies installation logistics, allowing for universal application irrespective of door swing direction.
Operational Limitations: It is imperative for specifying engineers to note the specific functional exclusions: the Godrej Dyna Door Closer Size 4 is explicitly not fire-rated, rendering it unsuitable for integration into fire door assemblies where compliance with fire resistance standards is mandatory. Furthermore, the absence of back-check, hold-open, and delayed action functions means it is not engineered for applications requiring protection against abusive opening, temporary door retention, or extended opening periods for accessibility. Its utility is therefore focused on core controlled closing for general access points.
Technical Support & FAQs
Engineering Analysis
The Godrej Dyna Door Closer Size 4 is fundamentally a hydro-mechanical device designed for controlled energy dissipation during door closure. Its core functionality relies on a high-grade Aluminium Alloy housing, encapsulating a precisely engineered hydraulic system. The hydraulic mechanism employs an advanced sealing system, ensuring containment of the hydraulic fluid under varying temperature and pressure conditions, thereby guaranteeing consistent damping performance throughout its operational lifespan.
EN1154 Compliance and Power Classification: This door closer is designed to meet the stringent requirements of the EN1154 European standard for controlled door closing devices, specifically categorized as an EN1154 Size 4 unit. This classification indicates its suitability for a defined range of door widths and weights, precisely up to 1100mm and approximately 80kg. The adjustable force range (EN1154 sizes 2-4) allows for nuanced adaptation to site-specific conditions, ensuring optimal closing force without excessive resistance, aligning with the performance criteria stipulated by EN1154 for safety and usability.
Door Control Precision and Hydraulic Valving: The precision of door control is achieved through two independently adjustable hydraulic valves: one for the closing speed (sweep speed) and another for the latching speed (final closing phase). These valves regulate the flow rate of the hydraulic fluid, allowing installers to fine-tune the door's movement from an opening angle of up to 160 degrees down to the fully closed and latched position. This granular control prevents abrupt slamming, protects door hardware, and ensures secure latching, critical for security and energy efficiency.
Durability and Functional Scope: The design is optimized for longevity, validated by a robust 500,000 cycle test rating, far exceeding the requirements for many commercial applications and indicating a high degree of material and component resilience. The non-handed design simplifies installation logistics, allowing for universal application irrespective of door swing direction.
Operational Limitations: It is imperative for specifying engineers to note the specific functional exclusions: the Godrej Dyna Door Closer Size 4 is explicitly not fire-rated, rendering it unsuitable for integration into fire door assemblies where compliance with fire resistance standards is mandatory. Furthermore, the absence of back-check, hold-open, and delayed action functions means it is not engineered for applications requiring protection against abusive opening, temporary door retention, or extended opening periods for accessibility. Its utility is therefore focused on core controlled closing for general access points.