The Valve,globe, cataloged under National Stock Number 4820-01-056-5503, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 26 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-056-5503 |
| Item Name | Valve,globe |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Furnished Items and Quantity | 2 NUT |
| Connection Style | HIGH PRESSURE FLARE(TUBE) ALL ENDS |
| Criticality Code Justification | ZZZY |
| Connection Type | THREADED INTERNAL TUBE ALL ENDS |
| Style Designator | STRAIGHT THRU W/OFFSET |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-C-450 FED SPEC SINGLE MATERIAL RESPONSE PACKING |
| Material Document and Classification | QQ0S0763,CLASS 316 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Nominal Outside Diameter Tube Accommodated | 0.562 INCHES ALL ENDS IN |
| Operating Pressure | 20000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Offset Distance | 0.630 INCHES IN |
| Bonnet Type | INSIDE SCREW |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.688 INCHES ALL ENDS IN |
| Seat Angle | 30.0 DEGREES ALL ENDS |
| Mounting Facility | BRACKET(S) |
| Bonnet Attachment Method | THREADED |
| Thread Class | 2B ALL ENDS |
| Thread Quantity Per Inch | 16 ALL ENDS |
| Material | STEEL COMP 316 BODY |
| Material | STEEL COMP 316 STEM |
| Material | COPPER ALLOY AND PLASTIC POLYTETRAFLUOROETHYLENE PACKING |
| Thread Series Designator | UN ALL ENDS |
| Valve Operation Method | MANUAL |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY FREE FROM MERCURY CONTAMINATION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 20SV-9081 | 3/1 Design control — primary reference U.S. Government activity |
NSN 4820-01-056-5503 is a Valve,globe, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-194-0770. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-056-5503: Flow Control Device: DISK; Furnished Items and Quantity: 2 NUT; Connection Style: HIGH PRESSURE FLARE(TUBE) ALL ENDS; Criticality Code Justification: ZZZY. 26 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.