The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-535-1076, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-535-1076 |
| Primary Part Number | 40771-501 |
| Item Name | Valve,regulating,temperature |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| Status | ACTIVE |
| Flow Control Device | DOUBLE SEATED |
| Two-Way Valve Action | REVERSE ACTING |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 7.375 INCHES MINIMUM AND 7.625 INCHES MAXIMUM IN |
| First End Style Designator | RAISED |
| Material Document and Classification | ASTM A216, GRADE WCB ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| End Connection Quantity | 2 |
| Mounting Facility | FLANGE |
| First End Connection Type | RAISED FACE FLANGE |
| Temp Adjustability | ADJUSTABLE |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE PACKING |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | STEEL UNS J03002 BODY |
| Material | STEEL CORROSION RESISTING STEM |
| End Connection Spec/std | ANSI B16.5 150.0 POUND CLASS LBS |
| 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 |
|---|---|
| 40771-501 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
NSN 4820-01-535-1076 is a Valve,regulating,temperature, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-535-1076 has 1 manufacturer part number on file: 40771-501 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
Key specifications for 40771-501: Flow Control Device: DOUBLE SEATED; Two-Way Valve Action: REVERSE ACTING; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 18 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.