The Valve,restrictor Check, cataloged under National Stock Number 4820-01-697-5123, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-697-5123 |
| Item Name | Valve,restrictor Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Mounting Position | HORIZONTAL |
| Criticality Code Justification | ZZZY |
| Style Designator | OFFSET |
| Offset Distance | 1.200 INCHES IN |
| Material | ALUMINUM ALLOY 6061 BODY |
| Valve Operation Method | AUTOMATIC |
| Reference Number Differentiating Characteristics | AN ITEM THAT SUPPORTS SUBSAFE CRITICAL SYSTEMS AND REQUIRES OBJECTIVE QUALITY EVIDENCE THAT QUALITY ASSURANCE REQUIREMENTS HAVE BEEN MET, INCLUDING CERTIFICATION OF TESTS FOR HYDROSTATIC AND/OR OPERATIONAL TESTING AND ITEM SERIALIZATION TRACEABLE TO THE CERTIFICATIONS DURING INITIAL PROCUREMENT AND ANY SUBSEQUENT REPAIRS. GOVERNMENT SOURCE INSPECTION IS INVOLVED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| 21244-001 | 3/1 Design control — primary reference Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace |
| 21244-001Q5 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 4820-01-697-5123 is a Valve,restrictor Check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-697-5123: Mounting Position: HORIZONTAL; Criticality Code Justification: ZZZY; Style Designator: OFFSET; Offset Distance: 1.200 INCHES IN. 7 specifications are 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.
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.