The Retainer,disk,valve, cataloged under National Stock Number 4820-01-477-4544, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-477-4544 |
| Primary Part Number | NB21125627 |
| Item Name | Retainer,disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| 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 |
|---|---|
| E3650 1.50IN PC NO 11 | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| B211256-27 | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| NB21125627 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| E3650 2.00IN PC NO 11 | C/1 Advisory reference — outside the item-of-supply concept Leslie Controls, Inc. Dba Leslie Controls Inc |
NSN 4820-01-477-4544 is a Retainer,disk,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-477-4544 has 3 manufacturer part numbers on file: E3650 1.50IN PC NO 11 (Leslie Controls, Inc. Dba Leslie Controls Inc), B211256-27 (Leslie Controls, Inc. Dba Leslie Controls Inc), NB21125627 (Leslie Controls, Inc. Dba Leslie Controls Inc).
Key specifications for NB21125627: Special Features: USED ON SAFETY RELIEF VALVE,MODEL 1385,P/N YB2385G221. 1 1/2 IN. IN. 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.