The Von Duprin 050656 is the OEM Top Latch/Rod Service Kit for the Von Duprin ES5547 Concealed Vertical Rod (CVR) exit device in the 55 Series. It is a Grade 1 field replacement kit, non-fire rated, containing the top latch assembly and rod components required to restore full top-latch engagement and rod function when the existing top latch or rod system has failed on an ES5547 installation. The "service kit" designation means this is the complete assembly replacement - not just a single component but the full top latch and rod package in one order.

This kit is for the standard ES5547. Fire-rated ES5547-F installations require a separate kit. Confirm the device model before ordering.

What the ES5547 Is and Why the Top Latch Matters

The Von Duprin 55 Series is a concealed vertical rod exit device line where the rods that connect the center case to the top and bottom latches run inside the door - not on the surface like a SVR (Surface Vertical Rod) device. The 5547 is the CVR variant within the 55 Series. The "ES" prefix designates the electrically secured version, meaning this device is equipped for electrified access control - typically electric latch retraction or an electrified securing mechanism that integrates with a building access control system.

On any CVR exit device, the top latch is one of the two primary latching points (along with the bottom latch) that secure the door when closed. When the pushpad is depressed, the center case mechanism transmits movement up through the concealed top rod to the top latch housing. The top latch bolt retracts from the top frame strike, the bottom latch retracts through the same center case motion, and the door swings free.

When the top latch mechanism wears - from high-cycle use, forced entry attempts, misalignment from door settling, or corrosion - the top latch either fails to retract fully when the pushpad is operated, or fails to re-engage the top strike when the door closes. Either failure creates a life safety problem. A door that won't open when the pushpad is pressed is a panic hardware failure. A door that closes but doesn't re-latch at the top is a security failure. The 050656 service kit addresses both failure modes by replacing the top latch assembly and the rod components that drive it.

Von Duprin Rod Service Kit: Companion Parts in the 55 Series ES5547 Catalog

The 050656 top latch and rod service kit is one of several 55 Series service parts available for the 5547 CVR configuration. The companion top rod kit for 8' to 10' tall doors is the 050372. The top rod connector with pin - the fitting that joins the top rod to the center case output - is the 050368. For the 5547WDC (Wide Door Clearance) variant, the bottom rod kit is the 050096 and the latch control is the 100315.

Understanding the 5547 vs 5547WDC distinction matters for service parts ordering. The standard 5547 and the 5547WDC have different rod and latch configurations at the bottom because the WDC version is designed for wider door clearance applications where the bottom latch geometry differs. The 050656 top latch/rod service kit covers the ES5547 - confirm whether the installed device is the standard or WDC configuration before ordering additional bottom-side components.

Von Duprin Top Latch: Service Conditions That Require This Kit

Three conditions on ES5547 installations typically lead to a top latch/rod service kit order. Door settling or building movement over time can pull the door frame out of the plumb, which changes the engagement geometry between the top latch bolt and the top strike. The bolt starts contacting the strike at an angle, accelerating wear on both surfaces. A top latch that used to drop cleanly starts catching and dragging.

High-cycle institutional applications - healthcare corridors, school hallways, government building exits - put significant mechanical stress through the top rod and latch on every pushpad operation, often tens of thousands of cycles per year. Rod connectors wear at their joints, latch springs fatigue, and bolt face wear accumulates.

Finally, the ES prefix on the ES5547 means this device is in an access-controlled opening where electrified functions are active. Electric latch retraction cycles add additional mechanical load on top of the standard pushpad cycles, which can shorten the top latch service interval compared to a standard mechanical-only 5547.

SecurityParts stocks OEM Von Duprin 55 Series exit device parts.