The Valve,expansion, cataloged under National Stock Number 4820-01-326-1690, 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 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-326-1690 |
| Primary Part Number | TIRN35FW-2C |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Electric Co Alco Controls Div |
| Status | ACTIVE |
| Flow Control Device | CAGE |
| Valve Equalizer Location | EXTERNAL |
| Second End Relationship with First End | IDENTICAL |
| Body Style | ANGLE GIVE "ADQM" OR "ADQN" IF FLANGED ONE OR TWO ENDS |
| First End Style Designator | SOCKET |
| Valve Equalizer Connection Diameter | 0.254 INCHES NOMINAL IN |
| Mounting Method | CLAMP BULB |
| Material Document and Classification | AISI 410 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | ASTM B124, ALLOY NO. 2 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| End Connection Quantity | 2 |
| Capillary Tube Length | 120.000 INCHES NOMINAL IN |
| First End Connection Type | UNTHREADED INTERNAL PIPE |
| Bulb Media Type | ANY ACCEPTABLE |
| First End Nominal Pipe Size Accommodated | 0.879 INCHES IN |
| Material | COPPER ALLOY BODY |
| Material | STEEL SEAT |
| Material | STEEL COMP 410 STEM |
| Valve Expansion Control Type | THERMOSTATIC |
| Media for Which Designed | REFRIGERANT 12 |
| Valve Equalizer Connection Type | SOLDER TUBE |
| Valve Pressure Limiting Device | 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-2C | Emerson Electric Co Alco Controls Div (USA) |
| Reference | Meaning |
|---|---|
| TIRN35FW-2C | 3/9 Design control — primary reference Melchior Armstrong Dessau Inc |
NSN 4820-01-326-1690 is a Valve,expansion, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-326-1690 has 1 manufacturer part number on file: TIRN35FW-2C (Emerson Electric Co Alco Controls Div).
Key specifications for TIRN35FW-2C: Flow Control Device: CAGE; Valve Equalizer Location: EXTERNAL; Second End Relationship with First End: IDENTICAL; Body Style: ANGLE GIVE "ADQM" OR "ADQN" IF FLANGED ONE OR TWO ENDS. 21 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.