Von Duprin 090066 33/35/98/99 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$28.22
Von Duprin 090066 33/35/98/99 Series Top Latch Compression Spring Replacement Part, Package of 10

Von Duprin 090066 33/35/98/99 Series Top Latch Compression Spring Replacement Part, Package of 10

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Model: 90066
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$28.22
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Von Duprin 090066 33/35/98/99 Series Top Latch Compression Spring Replacement Part, Package of 10

Commercial-Grade Exit Device Replacement Spring for 33/35/98/99 Series

The Von Duprin 090066 Top Latch Compression Spring is a genuine replacement part designed for use with Von Duprin 33/35/98/99 Series exit devices. Sold in a convenient package of 10, this Grade 1 commercial-grade component ensures continued reliable operation of compatible exit device top latch assemblies. Sourced directly from Von Duprin, this part maintains the performance standards expected from professional-grade door hardware in demanding commercial applications.

Professional Features & Benefits

  • Genuine Replacement Component: Designed specifically as a replacement part for Von Duprin 33/35/98/99 Series exit devices, ensuring proper fit and function within the top latch assembly.
  • Convenient Multi-Pack Quantity: Sold in a package of 10 springs, making this ideal for facility maintenance teams, locksmiths, and door hardware professionals managing multiple units or stocking spare parts.
  • Grade 1 Commercial Rating: Rated Grade 1 for commercial applications, meeting the performance demands of high-traffic door hardware environments.
  • Broad Series Compatibility: Compatible with the 33, 35, 98, and 99 Series Von Duprin exit device lines, providing versatile serviceability across a wide range of installed hardware.
  • Exit Device Parts and Accessories Classification: Categorized under Exit Devices Parts within the Von Duprin product ecosystem, confirming direct applicability to exit device maintenance and repair.
  • Commercial Application Ready: Designated for commercial use, this spring component supports the rigorous demands of institutional, industrial, and commercial door hardware installations.

Technical Specifications

  • Product Group: Exit Devices and Trim
  • Series: 33/35/98/99 Series
  • Grade: Grade 1
  • Product Subgroup: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Type: Exit Devices Parts
  • Commercial/Residential: Commercial
  • Parts and Accessories Type: Replacement Parts
  • Product Attribute: Parts and Accessories
  • Package: Yes
  • Package Qnty: 10
  • Fire Rating: No
  • Product Category: Exit Devices and Trim
  • Department: Door Hardware

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Von Duprin Quality?

Von Duprin exit device parts and accessories are engineered to maintain the Grade 1 commercial performance standards that professionals rely on across the 33/35/98/99 Series product lines. This genuine replacement spring component supports long-term serviceability and consistent operation of Von Duprin exit devices in demanding commercial environments. With a convenient package quantity of 10, maintenance teams and hardware professionals can keep critical components on hand to minimize downtime and ensure code-compliant door hardware performance.

Manufacturer Resources

Von Duprin 98/99 Series Catalog

Product Specs

Product Group:
Exit Devices and Trim
Series:
33/35/98/99 Series
Grade:
Grade 1
Product Subgroup:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Type:
Exit Devices Parts
Commercial/Residential:
Commercial
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Package:
Yes
Package Qnty:
10
Fire Rating:
No
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Von Duprin 90066 – Frequently Asked Questions

1) What does the Von Duprin 090066 compression spring actually do in an exit device?
The 090066 is the compression spring that sits in the top latch assembly of Von Duprin 33, 35, 98 and 99 Series exit devices. It's the spring that returns the top latch after the pushbar is released. When a vertical rod device stops re-latching at the head, or the top latch feels sluggish and stays retracted, a tired or broken compression spring is one of the parts you replace before condemning the whole latch assembly. It's a service part, not a complete latch.
2) Will the Von Duprin 090066 spring fit my 99 Series vertical rod device, or is it only for the 98?
It covers all four families: 33, 35, 98 and 99 Series Von Duprin exit devices use this same top latch compression spring. That's the surface vertical rod and concealed vertical rod devices in those lines, since the rim devices have no top latch. If your device is stamped 98 or 99 (or the older 33/35), the 090066 is the right spring.
3) My top latch won't hold the door shut. Do I need a new spring or a whole new latch?
Start with the cheap part. If the latch bolt moves freely by hand but is slow or fails to return under its own power, the compression spring has lost tension and the 090066 fixes it. If the latch body is bent, the bolt binds in the housing, or the rod connection is stripped, a spring won't save it and you need the top latch assembly. Also check rod length and the top strike alignment first, since a device that's out of adjustment reads exactly like a weak spring.
4) My exit device will not latch at the top - do I need the Von Duprin 090066 spring or the vertical rod?
Those are two different failures. The 090066 is the top latch compression spring for 33/35/98/99 Series devices, and it is what you replace when the latch bolt is sluggish returning to the projected position under its own force. If the top latch is not being driven at all when the pushbar is released, the problem is usually in the rod that connects the device to the latch. On a Falcon 24 Series Monarch concealed vertical rod device, that component is the Falcon 610061 concealed vertical top rod for F-25-C and F-25-CWDC. Diagnose which of the two is at fault before ordering, since the spring and the rod are not substitutes for one another.
5) How many springs come in a Von Duprin 090066 pack?
Ten springs per package. That quantity is aimed at a maintenance crib rather than a single repair, so if you're a facility with a run of 98 or 99 Series vertical rod devices on stair and exit doors, one pack stocks the shelf for years of top latch service calls. If you only have one door to fix, you're still buying the pack of ten.
6) Do I need anything else to rebuild a Von Duprin 98/99 top latch besides the 090066 spring?
Depends what you found when you opened it up. The spring is a single component of the top latch assembly, so if the bolt, the latch housing, or the vertical rod is worn you'll be ordering those separately. Have the device model, the door height, and whether it's surface or concealed vertical rod in front of you when you order, because rod parts differ between those two. The 98/99 Series catalog Von Duprin publishes lists the parts breakdown for the family.
7) Does the difference between the Accentra 7110 and 7110F top latch parts mean I need a fire-rated version of the Von Duprin 090066?
Accentra splits its top latch replacement components by device: the 60-7010-0049-999 covers the 7110/7120 and the 60-7010-0050-999 covers the 7110F. Neither of those components carries a fire rating in its own right, and the Von Duprin 090066 compression spring does not carry one either. The fire rating belongs to the complete exit device assembly and its label, not to the spring, so there is no separate fire-rated spring to order for a 33/35/98/99 Series device. What matters is that the device is restored to the manufacturer's own configuration with the Grade 1 commercial part it was built with.
8) If the top latch on my double doors keeps failing, is a spring like the Von Duprin 090066 the fix or do I need a mullion?
A compression spring such as the Von Duprin 090066 restores the action of an existing top latch on 33/35/98/99 Series devices. It does not change how the opening is secured. If the real issue is that a pair of doors has no fixed strike point for the exit devices, that is a mullion question: the Falcon 4023 is a steel mullion for double door exit device applications, and the Falcon 525 aluminum mullion stabilizers address movement in an exit device mullion. Replacing a spring in a device that is fighting an unstable opening will not hold the repair.
9) Is a deadlatch replacement part the same thing as the Von Duprin 090066 exit device spring?
No. The Von Duprin 090066 is a compression spring inside the top latch assembly of a 33/35/98/99 Series exit device, sold in a package of 10 for maintenance stock. A deadlatch part such as the Falcon 23981160, a 2-3/8 inch square corner deadlatch replacement part for the T Series, is a latch body that mortises into the edge of the door on a lockset, not a component of a panic device. The two get confused because both are described as latch parts, but they serve different hardware and different door preps.
10) For a facility standardizing on one set of exit device spares, what should be stocked alongside the Von Duprin 090066?
The 090066 top latch compression spring covers the 33, 35, 98 and 99 Series and comes in a package of 10, which suits a facility holding spares for several devices at once. Where the same building runs other exit device lines, the equivalent top latch spares are brand specific: the Accentra 60-7010-0049-999 for 7110 and 7120 devices, the Accentra 60-7010-0050-999 for the 7110F, and the Falcon 610061 concealed vertical top rod for F-25-C and F-25-CWDC 24 Series Monarch devices. Stocking by device family rather than by part function is what keeps a mixed-hardware campus serviceable.
11) Is this spring meant for commercial exit devices or will it work on residential door hardware?
Commercial only, and there's no residential equivalent to worry about. The 33/35/98/99 Series are Grade 1 commercial panic and fire exit devices found on schools, hospitals, offices, and stairwells. Nothing on a house uses this part.
How fast can I get the Von Duprin 90066 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Von Duprin 90066 come with a warranty?
Absolutely. The Von Duprin 90066 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Von Duprin 90066?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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