The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-422-7861, 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 20 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-422-7861 |
| Primary Part Number | 40746 MODEL 1910 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| Status | ACTIVE |
| First End Bolt Hole Quantity | 4 |
| Flow Control Device | DISK |
| Second End Relationship with First End | IDENTICAL |
| Remote Actuation Method | DIAPHRAGM |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 8.000 INCHES NOMINAL IN |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Flange Thickness | 0.750 INCHES NOMINAL IN |
| First End Flange Outside Diameter | 4.250 INCHES NOMINAL IN |
| First End Style Designator | PLAIN |
| First End Bolt Hole Diameter | 0.562 INCHES NOMINAL IN |
| First End Bolt Circle Diameter | 3.125 INCHES NOMINAL IN |
| Material Document and Classification | UNABLE TO DECODE |
| End Connection Quantity | 2 |
| Outlet Pressure Range | 10.0 TO 50.0 CAMERA MOUNT |
| Valve Loading Method | SPRING |
| First End Connection Type | PLAIN FACE FLANGE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| Material | COPPER ALLOY 922 BODY |
| Filter | 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 |
|---|---|
| 40746-201 | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| 40746 MODEL 1910 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| Reference | Meaning |
|---|---|
| NAP 949 | D/9 Drawing number reference only Atlas Valve Co |
| ANAP949X4-201 | 5/9 Secondary reference Atlas Valve Co |
| 1910 1IN 10T50PSI NAP 949 CDS-1 | 5/9 Secondary reference Atlas Valve Co |
| NAP 949 CDS-1 ITEM 8 10T50PSI | 5/9 Secondary reference Atlas Valve Co |
| NAP 949 1910 10T50PSI | 5/9 Secondary reference Atlas Valve Co |
NSN 4820-01-422-7861 is a Valve,regulating,fluid Pressure, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-422-7861 has 2 manufacturer part numbers on file: 40746-201 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40746 MODEL 1910 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
4 possible matches (shared part number, not a government interchangeability claim): 4820-01-422-7865, 4820-01-493-2194, 4820-01-493-2439. Verify interchangeability with system specifications before substitution.
Key specifications for 40746 MODEL 1910: First End Bolt Hole Quantity: 4; Flow Control Device: DISK; Second End Relationship with First End: IDENTICAL; Remote Actuation Method: DIAPHRAGM. 20 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.