The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-757-9920, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-757-9920 |
| Primary Part Number | 8737781 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Flow Control Device | STEM AND INTEGRAL DISK |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU Y |
| Regulation Type | 1ST STAGE MANUAL, 2ND STAGE AUTOMATIC |
| First End Style Designator | SWIVEL NUT, COMPRESSION |
| End Connection Quantity | 2 |
| Valve Loading Method | SPRING |
| First End Connection Type | THREADED INTERNAL PIPE |
| Material | BRASS SEAT |
| Material | COPPER ALLOY STEM |
| Outlet Pressure Accuracy Rating | ERR-060 |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Maximum Inlet Pressure Rating | ERR-060 |
| Thread Size and Series/type Designator | 3/3-8 NPT FIRST END |
| 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 |
|---|---|
| 8737781 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 174AL-3400 AVCC | Morrison Brothers Co Dba Morrison Brothers Co (USA) |
| Reference | Meaning |
|---|---|
| 174-AL | 5/9 Secondary reference Morrison Brothers Co Dba Morrison Brothers Co |
NSN 4820-00-757-9920 is a Valve,regulating,fluid Pressure, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-757-9920 has 2 manufacturer part numbers on file: 8737781 (U S Army Tank Automotive Command Amsta-Im-Mm), 174AL-3400 AVCC (Morrison Brothers Co Dba Morrison Brothers Co).
Key specifications for 8737781: Flow Control Device: STEM AND INTEGRAL DISK; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU Y. 16 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.