The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-134-3596, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Schneider Electric Systems Usa Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-134-3596 |
| Primary Part Number | 1-1284-W21 |
| Item Name | Valve,regulating,temperature |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Schneider Electric Systems Usa Inc |
| Status | ACTIVE |
| First End Bolt Hole Quantity | 8 |
| Flow Control Device | POPPET |
| Second End Relationship with First End | IDENTICAL |
| Body Style | TEE |
| Face to Face Distance | 10.000 INCHES NOMINAL IN |
| First End Flange Thickness | 0.600 INCHES NOMINAL IN |
| First End Flange Outside Diameter | 6.625 INCHES NOMINAL IN |
| Third End Relationship with Preceding Ends | IDENTICAL WITH FIRST END |
| First End Style Designator | PLAIN |
| Special Test Features | FACTORY-SET CONTROL TEMP RATING OF 177.0 DEG |
| First Connection Face to Centerline Distance | 5.000 INCHES NOMINAL IN |
| First End Bolt Hole Diameter | 0.562 INCHES NOMINAL IN |
| First End Bolt Circle Diameter | 5.500 INCHES NOMINAL IN |
| End Connection Quantity | 3 |
| First End Connection Type | PLAIN FACE FLANGE |
| Temp Adjustability | NOT ADJUSTABLE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| Cubic Measure | 1.50 CUBIC FEET |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| 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 |
|---|---|
| 1-1284-W21 PRIMARY | Schneider Electric Systems Usa Inc (USA) |
| Reference | Meaning |
|---|---|
| 97520-A21-3 | 5/9 Secondary reference Schneider Electric Systems Usa Inc |
| 8375207 | 5/9 Secondary reference General Motors Corp Electro-Motive Div |
NSN 4820-01-134-3596 is a Valve,regulating,temperature, manufactured by Schneider Electric Systems Usa Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-134-3596 has 1 manufacturer part number on file: 1-1284-W21 (Schneider Electric Systems Usa Inc).
Key specifications for 1-1284-W21: First End Bolt Hole Quantity: 8; Flow Control Device: POPPET; Second End Relationship with First End: IDENTICAL; Body Style: TEE. 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.