The Valve,ball, cataloged under National Stock Number 4820-01-540-3388, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Gas Turbine Efficiency Ab Gte. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-540-3388 |
| Primary Part Number | 20137 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Gas Turbine Efficiency Ab Gte |
| Status | ACTIVE |
| 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 |
|---|---|
| 20137 | Rolls-Royce Plc Naval Marine (GBR) |
| 40071453 | Ministry of Defence, Future Aircraft Carrier Ipt (cvf Ipt) (GBR) |
| 20137 PRIMARY | Gas Turbine Efficiency Ab Gte (SWE) |
| Reference | Meaning |
|---|---|
| 20137 | 3/9 Design control — primary reference Gas Turbine Efficiency Ab Gte Dba Engineering Div Main Office |
NSN 4820-01-540-3388 is a Valve,ball, manufactured by Gas Turbine Efficiency Ab Gte, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-540-3388 has 3 manufacturer part numbers on file: 20137 (Rolls-Royce Plc Naval Marine), 40071453 (Ministry of Defence, Future Aircraft Carrier Ipt (cvf Ipt)), 20137 (Gas Turbine Efficiency Ab Gte).
Key specifications for 20137: Part Name Assigned by Controlling Agency: 2-WAY VALVE (FILL/DRAIN); End Item Identification: GAS TURBINE EFFICIENCY WATER WASH SYSTWM FOR LCS1. 0 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.