The Valve,globe, cataloged under National Stock Number 4820-01-145-8542, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Walworth Company. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-145-8542 |
| Primary Part Number | 320 1-1/2IN |
| Item Name | Valve,globe |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Walworth Company |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Furnished Items and Quantity | 1 HANDWHEEL |
| Nominal Pipe Size Accommodated | 1.500 INCHES ALL ENDS IN |
| Connection Style | SOCKET ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | QQ-N-281,CLASSA FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | QQ-N-281,CLASSA FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Operating Pressure | 700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Bonnet Type | INSIDE SPRING |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Bonnet Attachment Method | THREADED |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Material | NICKEL ALLOY BODY |
| Material | NICKEL ALLOY 400 SEAT |
| Material | NICKEL ALLOY 400 STEM |
| Material | PLASTIC POLYCHLOROTRIFLUOROETHYLENE PACKING |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 320 1-1/2IN PRIMARY | The Walworth Company (USA) |
| Reference | Meaning |
|---|---|
| 803-2177934-B711AF | 3/2 Design control — primary reference U.S. Government activity |
| 320 S0CKET-WELD | C/1 Advisory reference — outside the item-of-supply concept The Walworth Company |
| 2620-902X7 ASSY C 1 1-2IN | 5/2 Secondary reference U.S. Government activity |
| 803-2177934 | D/9 Drawing number reference only U.S. Government activity |
| 2620-902X7 | D/9 Drawing number reference only U.S. Government activity |
| SS845-2110247REVHASSYC 1 1-2IN | 5/9 Secondary reference U.S. Government activity |
| 803-2177934-B711 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-145-8542 is a Valve,globe, manufactured by The Walworth Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-145-8542 has 1 manufacturer part number on file: 320 1-1/2IN (The Walworth Company).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-148-7403. Verify interchangeability with system specifications before substitution.
Key specifications for 320 1-1/2IN: Flow Control Device: DISK; Furnished Items and Quantity: 1 HANDWHEEL; Nominal Pipe Size Accommodated: 1.500 INCHES ALL ENDS IN; Connection Style: SOCKET ALL ENDS. 19 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.