The Ring,upper,valve, cataloged under National Stock Number 4820-01-038-7796, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-038-7796 |
| Primary Part Number | WB804 |
| Item Name | Ring,upper,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,CORROSION RESISTING,3.062 IN. LARGEST OD,2.562-18 NS RH INTERNAL THD,WRENCHING LUGS ON OD,1.184 IN. O/A H IN |
| 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 |
|---|---|
| WB804 PRIMARY | Ashcroft Inc Dba Heise (USA) |
| WBB804PC8 PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| WBB804 | 5/9 Secondary reference Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse |
| 5VZP72PC8 | 5/9 Secondary reference Ashcroft Inc Dba Heise |
NSN 4820-01-038-7796 is a Ring,upper,valve, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-038-7796 has 2 manufacturer part numbers on file: WB804 (Ashcroft Inc Dba Heise), WBB804PC8 (Ashcroft Inc Dba Heise).
Key specifications for WB804: General Characteristics Item Description: STEEL,CORROSION RESISTING,3.062 IN. LARGEST OD,2.562-18 NS RH INTERNAL THD,WRENCHING LUGS ON OD,1.184 IN. O/A H IN. 1 specification is 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.