The Test Kit,check Valve, cataloged under National Stock Number 4920-01-171-2076, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-171-2076 |
| Item Name | Test Kit,check Valve |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| Functional Description | USED TO PROOF PRESSURE AND LEAK TEST OF THE ISOLATION CHECK VALVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 745695 | 3/2 Design control — primary reference U.S. Government activity |
| R-TBD-710 | 5/9 Secondary reference The Boeing Company Div Legacy Am&m |
| EP5603-5-3 | 5/9 Secondary reference U.S. Government activity |
NSN 4920-01-171-2076 is a Test Kit,check Valve, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
Key specifications for 4920-01-171-2076: Special Features: C/O 1 TEST FIXTURE; 1 BASE; 1 INSTALLATION TOOL; 1 ADAPTER; 1 CAP; Functional Description: USED TO PROOF PRESSURE AND LEAK TEST OF THE ISOLATION CHECK VALVE; Part Name Assigned by Controlling Agency: CHECK VALVE TEST KIT; End Item Identification: B-1B AIRCRAFT AGE.. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 4920-01-171-2076 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.