The Valve,vacuum Regulating, cataloged under National Stock Number 4820-00-006-1638, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tescom Corp Dba Tescom Div Tescom. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-006-1638 |
| Primary Part Number | 44-3010-24 |
| Item Name | Valve,vacuum Regulating |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tescom Corp Dba Tescom Div Tescom |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM |
| First End Thread Series Designator | NPT |
| Temp Rating | -65.0 FAHRENHEIT DEGF |
| Temp Rating | 165.0 FAHRENHEIT DEGF |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| First End Thread Class | 3A A |
| First End Style Designator | PLAIN |
| End Connection Quantity | 2 |
| Body Material | COPPER ALLOY |
| Temp Adjustability | NOT ADJUSTABLE |
| First End Nominal Pipe Size Accommodated | 0.250 INCHES IN |
| Material | PLASTIC FLOW CONTROL DEVICE |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAT |
| First End Nominal Thread Size | 0.250 INCHES 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 |
|---|---|
| 44-3010-24 PRIMARY | Tescom Corp Dba Tescom Div Tescom (USA) |
| Reference | Meaning |
|---|---|
| 16-001-022 | 5/9 Secondary reference Norgren C a Co |
NSN 4820-00-006-1638 is a Valve,vacuum Regulating, manufactured by Tescom Corp Dba Tescom Div Tescom, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-006-1638 has 1 manufacturer part number on file: 44-3010-24 (Tescom Corp Dba Tescom Div Tescom).
Key specifications for 44-3010-24: Flow Control Device: DIAPHRAGM; First End Thread Series Designator: NPT; Temp Rating: -65.0 FAHRENHEIT DEGF; Temp Rating: 165.0 FAHRENHEIT DEGF. 15 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.