The Retainer,disk,valve, cataloged under National Stock Number 4820-01-039-2817, 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 5 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-039-2817 |
| Primary Part Number | 5VZF72PC5 |
| Item Name | Retainer,disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Outside Diameter | 1.500 INCHES NOMINAL IN |
| Nominal Thread Size | 1.188 INCHES IN |
| Valve Size for Which Designed | 1.500 INCHES IN |
| Inside Diameter | 1.000 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 5VZF72PC5 | Ashcroft Inc Dba Heise (USA) |
| 5VXZ72PC5 | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| VBA833A | 3/9 Design control — primary reference Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse |
| VBV833 | 5/9 Secondary reference Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse |
NSN 4820-01-039-2817 is a Retainer,disk,valve, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-039-2817 has 2 manufacturer part numbers on file: 5VZF72PC5 (Ashcroft Inc Dba Heise), 5VXZ72PC5 (Ashcroft Inc Dba Heise).
Key specifications for 5VZF72PC5: Outside Diameter: 1.500 INCHES NOMINAL IN; Overall Length: 2.938 INCHES NOMINAL IN; Nominal Thread Size: 1.188 INCHES IN; Valve Size for Which Designed: 1.500 INCHES 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.