Von Duprin 970138 Booster Tors...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$18.00
$13.97
Von Duprin 970138 Booster Torsion Spring for 880K Series Exit Device Parts

Von Duprin 970138 Booster Torsion Spring Replacement Part for 880K Series Exit Devices

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Model: 970138

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

$18.00
$13.97
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Von Duprin 970138 Booster Torsion Spring Replacement Part for 880K Series Exit Devices

Heavy-Duty Replacement Component for Commercial Exit Device Maintenance

The Von Duprin 970138 Booster Torsion Spring is a genuine replacement part designed specifically for the Von Duprin 880K Series exit devices. This heavy-duty commercial-grade component ensures continued reliable operation of your 880K Series exit device by restoring proper spring tension and booster function. Engineered to Von Duprin's exacting standards, this replacement part is the correct solution for maintaining the performance and integrity of your existing 880K Series exit device installation.

Professional Features & Benefits

  • Genuine OEM Replacement Part: Designed and manufactured specifically for the Von Duprin 880K Series exit devices, ensuring precise fit and proper function without modification.
  • Heavy-Duty Construction: Rated for heavy-duty commercial use, this booster torsion spring is built to withstand the demands of high-traffic commercial door applications.
  • Booster Spring Function: Restores proper torsion and booster action to the 880K Series exit device, maintaining smooth and reliable egress operation.
  • Commercial-Grade Quality: Classified as a commercial product, this replacement part meets the performance expectations required for professional door hardware installations.
  • Series-Specific Compatibility: Engineered exclusively for the 880K Series, ensuring correct spring rate, geometry, and dimensional fit for seamless integration with existing hardware.
  • Simplified Maintenance: Replacing a worn or broken booster torsion spring with this genuine Von Duprin part helps extend the service life of the overall exit device assembly and avoids costly full-unit replacement.

Technical Specifications

  • Subcategory: Parts and Accessories
  • Series: 880K Series
  • Duty Level: Heavy Duty
  • Product Group: Door Trim and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Exit Device Parts
  • Commercial/Residential: Commercial
  • Parts and Accessories Type: Replacement Parts
  • Product Attribute: Parts and Accessories
  • Product Model: 970138
  • Product Category: Door Trim and Accessories
  • 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 heavy-duty commercial standards, delivering the precise fit and reliable performance required to maintain the integrity of your exit device system. The 970138 Booster Torsion Spring is a genuine Von Duprin component, purpose-built for the 880K Series to ensure your door hardware continues to perform at the level your facility demands. Trust Von Duprin replacement parts to keep your commercial egress hardware operating safely and dependably.

Manufacturer Resources

Von Duprin 88 Series Catalog

Product Specs

Subcategory:
Parts and Accessories
Series:
880K Series
Duty Level:
Heavy Duty
Product Group:
Door Trim and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Exit Device Parts
Commercial/Residential:
Commercial
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Product Model:
970138
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Von Duprin 970138 – Frequently Asked Questions

1) What does the Von Duprin 970138 booster torsion spring actually do inside an exit device?
The 970138 is the booster torsion spring out of a Von Duprin 880K Series exit device. It supplies the return tension that pushes the touchpad mechanism back out after someone hits it, so the latch resets and the door secures on close. When it weakens or breaks, the symptom on the door is a pushbar that feels dead or slow to return and a latch that does not consistently re-throw. Replacing the spring is a component-level fix, not a full device swap.
2) My 880K pushbar does not spring back. Do I need a whole new exit device?
Usually not. A touchpad that stays depressed or returns sluggishly on an 880K is most often the booster torsion spring, and the 970138 replaces that one component. Swapping the spring restores the return action without pulling the device off the door frame and re-prepping the opening, which is the difference between a service call and a hardware replacement on a budget line.
3) Is the 970138 a genuine Von Duprin part or an aftermarket spring?
Genuine Von Duprin. The 970138 is the factory replacement booster torsion spring for the 880K Series, which matters on exit hardware because a fire-rated or code-required egress device can lose its listing when non-OEM internals go into it. For a locksmith or facility maintenance shop, ordering by the OEM number is also the fastest way to be sure the spring rate is right rather than close.
4) Is this spring rated for a high traffic commercial opening or is it a light duty part?
Heavy duty, and commercial rather than residential. That is the duty class Von Duprin assigns the 880K parts line, which is what you want on a school corridor, a hospital stair door, or a retail exit that cycles all day. For a property manager stocking spares across a building, this is the part that wears before the device body does.
5) Is a booster torsion spring the same thing as the main pushbar or latch spring on an exit device?
No, and mixing them up is a common ordering mistake. The 970138 is specifically the booster torsion spring in the 880K Series device, the component that adds return torsion to the touchpad action. The latch retraction and dogging components are separate parts with their own Von Duprin numbers. If the failure is in the latchbolt or the dogging, this spring is not the fix.
6) How do I order the right Von Duprin 880K booster torsion spring, and is there anything to specify?
Order it by the number: Von Duprin 970138. There is no handing, finish, or size choice on this spring, it is a single part number covering the booster torsion spring for the 880K Series. Buyers standardizing across a facility often take several at once for the maintenance cart, since the spring is a wear item on the highest cycle openings.
How fast can I get the Von Duprin 970138 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 970138 come with a warranty?
Absolutely. The Von Duprin 970138 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 970138?
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
Why buy the Von Duprin 970138 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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