Test & Maintenance Equipment

Aviation Specialties Unlimited, Inc. offers test equipment from Hoffman engineering. We offer an array of factory upgrade maintenance kits, focus systems, and purge kits, tool sets, as well as other specialty items, such as N2- GEN 4 - Compact Nitrogen Generator. Kits are easy to operate, with detailed instructions for fast and effective maintenance.

Compact Nitrogen Purge Kit

ASU’s Compact Nitrogen Purge Kit is specially designed for the maintenance of ANVIS and PVS
night vision goggles. The compact size, weight, and rugged case are ideal for portability and operation in the most austere environments.


    Download the Spec Sheet

    The ASU Purge Kit operates via an easy-to-operate manual vacuum pump, which requires no electricity. Weighing just 15 lbs., the purge kit contains all the equipment needed to purge night vision devices. Straightforward, detailed instructions enable fast and effective purging both at the maintenance facility and in the field. The kit includes a refillable 24 cu. In. dry nitrogen tank, equipped with a high-quality regulator. Kit also includes adapters for AN/AVS-6 and AN/AVS-9. 

    This unit is a replacement for P/N 268549, NSN No. 5855-01-442-8781

    • Portable weight of 15 lbs
    • Quick and easy to assemle/disassemble
    • Simple, hand-operated vacuum pump
    • Leak detection capability
    • Refillable 24 cu. in. nitrogen purge tank included
    • Rugged, heavy-duty carrying case
    • Case dimensions 18x7x14 in.