The Parts Kit,ball Valve, cataloged under National Stock Number 4820-01-554-3954, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Flowserve Us Inc. Div Flowserve Cookeville Valve Operation. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-554-3954 |
| Primary Part Number | 1-1/2" CPT RK44 PT A120 R4 |
| Item Name | Parts Kit,ball Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Flowserve Us Inc. Div Flowserve Cookeville Valve Operation |
| Status | ACTIVE |
| Component Quantity | 15 |
| Document Type | DESIGN CONTROL DRAWING |
| End Item Source | 28740 |
| Component Document Page Number | 1 |
| Document Identification | VP6896B |
| Supply Items and Quantities | DOWNSTREAM SEAT, 1; BODY SEAL, 2; STEM SEAL, 1; BELLEVILLE WASHERS, 4; LOCKING NUT, 1; UPSTREAM SEAT-CONTROL, 1; SEAT BACK SEAL, 1; SEAL PROTECTOR, 2; STEM SEAL/THRUST BEARING, 2 |
| Component Document Origin | INDUSTRIAL |
| End Item Name | VALVE,BALL |
| Document Source | 28740 |
| 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 |
|---|---|
| 1-1/2" CPT RK44 PT A120 R4 PRIMARY | Flowserve Us Inc. Div Flowserve Cookeville Valve Operation (USA) |
| Reference | Meaning |
|---|---|
| VP6896B | D/9 Drawing number reference only Flowserve Us Inc. Div Flowserve Cookeville Valve Operation |
NSN 4820-01-554-3954 is a Parts Kit,ball Valve, manufactured by Flowserve Us Inc. Div Flowserve Cookeville Valve Operation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-554-3954 has 1 manufacturer part number on file: 1-1/2" CPT RK44 PT A120 R4 (Flowserve Us Inc. Div Flowserve Cookeville Valve Operation).
1 possible match (shared part number, not a government interchangeability claim): 3120-01-555-0419. Verify interchangeability with system specifications before substitution.
Key specifications for 1-1/2" CPT RK44 PT A120 R4: Component Quantity: 15; Document Type: DESIGN CONTROL DRAWING; End Item Source: 28740; Component Document Page Number: 1. 9 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.