The Valve,regulating,temperature, cataloged under National Stock Number 4820-00-181-8645, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell International Inc. Div Aerospace - Torrance. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-181-8645 |
| Primary Part Number | 156815-1-1 |
| Item Name | Valve,regulating,temperature |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| End Connection Quantity | 3 |
| First End Connection Type | PLAIN FACE FLANGE |
| Surface Treatment | NICKEL OUTSIDE |
| Material | COPPER BODY |
| Material | COPPER FLOW CONTROL DEVICE |
| Material | COPPER SEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 156815-1-1 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| Reference | Meaning |
|---|---|
| 123SCP104-107 | 7/1 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 4820-00-181-8645 is a Valve,regulating,temperature, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-181-8645 has 1 manufacturer part number on file: 156815-1-1 (Honeywell International Inc. Div Aerospace - Torrance).
Key specifications for 156815-1-1: Flow Control Device: POPPET; End Connection Quantity: 3; First End Connection Type: PLAIN FACE FLANGE; Surface Treatment: NICKEL OUTSIDE. 7 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.
NSN 4820-00-181-8645 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.