The Valve,ball, cataloged under National Stock Number 4820-01-552-9313, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Aalberts Integrated Piping Systems Americas, Inc.. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4820-01-552-9313 |
| Primary Part Number | 77-903-01 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Aalberts Integrated Piping Systems Americas, Inc. |
| Status | ACTIVE |
| Style Designator | STRAIGHT THRU |
| Face to Face Distance | 2.250 INCHES IN |
| Material | COPPER ALLOY BODY |
| 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 |
|---|---|
| 7522-01 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| 77-903-01 PRIMARY | Aalberts Integrated Piping Systems Americas, Inc. (USA) |
| 7005 ITEM 3 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
NSN 4820-01-552-9313 is a Valve,ball, manufactured by Aalberts Integrated Piping Systems Americas, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-552-9313 has 3 manufacturer part numbers on file: 7522-01 (Howell Laboratories Inc Dba Howell Laboratories Inc), 77-903-01 (Aalberts Integrated Piping Systems Americas, Inc.), 7005 ITEM 3 (Howell Laboratories Inc Dba Howell Laboratories Inc).
1 possible match (shared part number, not a government interchangeability claim): 6685-01-718-9598. Verify interchangeability with system specifications before substitution.
Key specifications for 77-903-01: Style Designator: STRAIGHT THRU; Special Features: BRONZE BALL VALVE; 3/4-16 THD; Face to Face Distance: 2.250 INCHES IN; End Item Identification: NEW CONSTRUCTION LPD-17; LP MEMBRANE DEHYDRATOR. 4 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.