The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-074-1298, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tactair Fluid Controls Inc. Government technical data includes 20 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-074-1298 |
| Primary Part Number | HP956100-2 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tactair Fluid Controls Inc |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Second End Relationship with First End | IDENTICAL |
| Surface Treatment Document and Classification | UNABLE TO DECODE |
| Body Style | STRAIGHT THRU |
| Regulation Type | MANUAL, DOUBLE STAGE |
| First End Thread Class | 3B |
| First End Style Designator | GASKET SEAL |
| Temp Rating | -65.0 FAHRENHEIT MINIMUM AND 275.0 FAHRENHEIT MAXIMUM DEGF |
| Material Document and Classification | QQ-S-763, CLASS 440C FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | QQ-S-763, CLASS 440C FED SPEC SINGLE MATERIAL RESPONSE STEM |
| End Connection Quantity | 2 |
| Valve Loading Method | SPRING |
| Surface Treatment | ANODIZE OUTSIDE |
| Material | STEEL COMP 440C STEM |
| Material | STEEL COMP 440C SEAT |
| Material | STEEL COMP 440C FLOW CONTROL DEVICE |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Center to Center Distance | 1.500 INCHES NOMINAL IN |
| Thread Size and Series/type Designator | 7/16-20 UNF FIRST END |
| Filter | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| HP956100-2 PRIMARY | Tactair Fluid Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| HP956100-2 | 5/9 Secondary reference U.S. Government activity |
| 215-72311-2 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 4820-00-074-1298 is a Valve,regulating,fluid Pressure, manufactured by Tactair Fluid Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-074-1298 has 1 manufacturer part number on file: HP956100-2 (Tactair Fluid Controls Inc).
Key specifications for HP956100-2: Flow Control Device: BALL; Second End Relationship with First End: IDENTICAL; Surface Treatment Document and Classification: UNABLE TO DECODE; Body Style: STRAIGHT THRU. 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.
NSN 4820-00-074-1298 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.