The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-456-2283, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Lawler Manufacturing Company, Inc.. Government technical data includes 17 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-456-2283 |
| Primary Part Number | S1-1/4IN45T90DEGF1661DNON-ASB |
| Item Name | Valve,regulating,temperature |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Lawler Manufacturing Company, Inc. |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| First End Style Designator | SOCKET W/BRAZING RING |
| Bulb Length | 12.125 INCHES NOMINAL IN |
| Bulb Diameter | 1.750 INCHES NOMINAL IN |
| Temp Rating | 45.0 FAHRENHEIT MINIMUM AND 90.0 FAHRENHEIT MAXIMUM DEGF |
| End Connection Quantity | 2 |
| Capillary Tube Length | 120.000 INCHES NOMINAL IN |
| First End Connection Type | UNTHREADED INTERNAL PIPE |
| Temp Adjustability | ADJUSTABLE |
| Thermostatic Element | LIQUID IMMERSION TYPE |
| First End Nominal Pipe Size Accommodated | 1.250 INCHES IN |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY BULB |
| Material | COPPER ALLOY STEM |
| Material | COPPER ALLOY SEAT |
| 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 |
|---|---|
| 1661-D 45T90DEGF | Lawler Manufacturing Company, Inc. (USA) |
| S1-1/4IN45T90DEGF1661DNON-ASB PRIMARY | Lawler Manufacturing Company, Inc. (USA) |
NSN 4820-01-456-2283 is a Valve,regulating,temperature, manufactured by Lawler Manufacturing Company, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-456-2283 has 2 manufacturer part numbers on file: 1661-D 45T90DEGF (Lawler Manufacturing Company, Inc.), S1-1/4IN45T90DEGF1661DNON-ASB (Lawler Manufacturing Company, Inc.).
Key specifications for S1-1/4IN45T90DEGF1661DNON-ASB: Flow Control Device: DISK; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU; First End Style Designator: SOCKET W/BRAZING RING. 17 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.