The Valve,expansion, cataloged under National Stock Number 4820-01-288-3845, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Electric Co Alco Controls Div. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-288-3845 |
| Primary Part Number | TIRN35FW |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Electric Co Alco Controls Div |
| Status | ACTIVE |
| First End Thread Direction | RIGHT-HAND |
| Temp Rating | 250.0 FAHRENHEIT DEGF |
| Second End Relationship with First End | IDENTICAL |
| Body Style | ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS |
| First End Style Designator | PLAIN |
| Refrigeration Capacity in Btu Per Hour | 35.0 |
| End Connection Quantity | 2 |
| First End Connection Type | THREADED EXTERNAL PIPE |
| First End Nominal Pipe Size Accommodated | 0.250 INCHES IN |
| Material | COPPER ALLOY BODY |
| Material | STEEL CORROSION RESISTING SEAT |
| Valve Expansion Control Type | PRESSURE |
| Media for Which Designed | REFRIGERANT |
| Valve Pressure Limiting Device | NOT INCLUDED |
| 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 |
|---|---|
| TIRN35FW PRIMARY | Emerson Electric Co Alco Controls Div (USA) |
| Reference | Meaning |
|---|---|
| T1RN35FW | C/1 Advisory reference — outside the item-of-supply concept Emerson Electric Co Alco Controls Div |
NSN 4820-01-288-3845 is a Valve,expansion, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-288-3845 has 1 manufacturer part number on file: TIRN35FW (Emerson Electric Co Alco Controls Div).
Key specifications for TIRN35FW: First End Thread Direction: RIGHT-HAND; Temp Rating: 250.0 FAHRENHEIT DEGF; Second End Relationship with First End: IDENTICAL; Body Style: ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS. 14 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.