Description

The Lockwood DC7726DA 2-6 Strength Closer is a premium, adjustable power (EN 2 to 6) surface-mounted door closer built for architectural and commercial applications. Its rack and pinion mechanism is housed in a fully formed metal cover over an extruded aluminium body manufactured from high-performance silicon alloy, giving it the strength to handle heavy commercial door traffic.

This closer is non-handed and suits either left or right hand doors, with regular, parallel and over-door mounting options covering the vast majority of retrofit and new-build applications. Two pressure relief valves are fitted as standard to protect the mechanism against abuse, and both the closing/latching speed and delayed action are field-adjustable to suit the specific door and site conditions.

Hardware Applications & Features

The Lockwood DC7726DA is engineered for reliable, adjustable closing control across a wide range of commercial and architectural doors:

➔ EN 2-6 Adjustable Power: Closing force is field-adjustable across the full EN 2 to 6 range (0.9kg–2.72kg), allowing the closer to be matched to door size, weight and location.

➔ Adjustable Back Check: Cushions the door before it reaches full opening, protecting the closer, door and surrounding wall or furniture from impact damage.

➔ Non-Handed, Flexible Mounting: Suitable for left or right hand doors, with regular, parallel and over-door mounting options to suit the installation.

➔ Overload Protection: Two pressure relief valves are fitted as standard to protect the mechanism against abuse or excessive force.

➔ Adjustable Delayed Action: Closing speed can be delayed to give slower-moving users more time to clear the doorway before the door begins to close.

Technical Architectural Parameters

Hardware Metric	Verified Component Dimension / Spec
Product Model	Lockwood DC7726DA 2-6 Strength Closer.
Mechanism	Rack and pinion, adjustable power EN 2 to 6 (0.9kg–2.72kg closing force).
Body Construction	Extruded aluminium body (high-performance silicon alloy), fully formed metal cover.
Handing / Mounting	Non-handed; regular, parallel and over-door mounting.
Adjustments	Adjustable back check, adjustable delayed action, dual pressure relief valves.
Fire Door Rating	Tested up to 4 hours (depending on doorset type) to AS1905.1:2005 Fire Resistant Door Sets.
Durability	Tested to Level D8 (500,000 cycles) per AS4145.2-2008.
Finish	Silver (SIL) — also available in Satin Stainless Steel (SSS) and Polished Stainless Steel (PSS).