The Seat,valve, cataloged under National Stock Number 4820-01-550-3803, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-550-3803 |
| Primary Part Number | G547-0002-264382086-10CP |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Body Outside Diameter | 2.938 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZY |
| Body Inside Diameter | 1.938 INCHES NOMINAL IN |
| Material | PLASTIC SEAT |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| G547-0002-264382086-10CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 845-7284928 ITEM 10CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 2640-801X1 ITEM 20CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 7550478-264382086-10CP | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-264382086-10CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-264382086-10CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 2643-820-86 ITEM 10CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| G547-0002-264382086-10 | 5/1 Secondary reference U.S. Government activity |
| 7550478-264382086-10 | 5/1 Secondary reference U.S. Government activity |
| 7383858-264382086-10 | 5/1 Secondary reference U.S. Government activity |
| 2643-820-86 ITEM 10 | 5/1 Secondary reference U.S. Government activity |
| H547-0001-264382086-10 | 5/1 Secondary reference U.S. Government activity |
| 2640-801X1 ITEM 20 | 3/1 Design control — primary reference U.S. Government activity |
| 845-7284928 ITEM 10 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 4820-01-550-3803 is a Seat,valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-550-3803 has 7 manufacturer part numbers on file: G547-0002-264382086-10CP (Naval Inventory Control Point Mechanicsburg), 845-7284928 ITEM 10CP (Naval Inventory Control Point Mechanicsburg), 2640-801X1 ITEM 20CP (Naval Inventory Control Point Mechanicsburg), 7550478-264382086-10CP (Naval Inventory Control Point Mechanicsburg), H547-0001-264382086-10CP (Naval Inventory Control Point Mechanicsburg) and 2 more.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-671-6236. Verify interchangeability with system specifications before substitution.
Key specifications for G547-0002-264382086-10CP: Body Outside Diameter: 2.938 INCHES NOMINAL IN; Criticality Code Justification: ZZZY; Body Inside Diameter: 1.938 INCHES NOMINAL IN; Special Features: SEAT BALL MADE OF DELRIN AF MATERIAL; USED ON 2.00 INCH SIZE STRAIGHT BALL VALVE IN. 5 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.