The Valve,gate, cataloged under National Stock Number 4820-00-939-8023, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-939-8023 |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 2.000 INCHES IN |
| Operating Pressure and Type | 1500.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Stem Type | RISING |
| Criticality Code Justification | ZZZY |
| Connection Type | BUTT WELD PIPE |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Departure From Cited Document | QUALITY ASSURANCE TESTING IAW NAVY LEVEL 1 ASSURANCE GUIDE |
| Nondefinitive Spec/std Data | B COMPOSITION |
| Material | COBALT ALLOY SEAT |
| Material | STEEL CORROSION RESISTING BODY |
| Valve Operation Method | MANUAL |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| 51484ITEM1 | 5/1 Secondary reference Velan Valve Corp. |
| B8354B-57S | 3/1 Design control — primary reference Velan Valve Corp. |
| B08-3054B05TS23256-10REVBMODL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| B8354B-57SL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 51484ITEM1L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 4820-00-939-8023 is a Valve,gate, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-939-8023: Nominal Pipe Size Accommodated: 2.000 INCHES IN; Operating Pressure and Type: 1500.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS; Stem Type: RISING; Criticality Code Justification: ZZZY. 12 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.
NSN 4820-00-939-8023 has DEMIL Code B. 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.