The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-977-3934, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-977-3934 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| First End Bolt Hole Quantity | 4 |
| Valve Stem Design | SINGLE SEAT |
| Renewable Seat Ring Type | PRESSED-IN |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 8.250 INCHES NOMINAL IN |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Flange Outside Diameter | 5.000 INCHES NOMINAL IN |
| First End Style Designator | RAISED |
| Criticality Code Justification | ZZZY |
| First End Bolt Hole Diameter | 0.625 INCHES NOMINAL IN |
| First End Bolt Circle Diameter | 3.875 INCHES NOMINAL IN |
| End Connection Quantity | 2 |
| Outlet Pressure Range | 8.0 TO 15.0 CAMERA MOUNT |
| Valve Loading Method | SPRING |
| First End Connection Type | RAISED FACE FLANGE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| Material | NICKEL ALLOY STEM |
| Material | NICKEL ALLOY AND COPPER ALLOY SEAT |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Maximum Inlet Pressure Rating | ERR-060 |
| Filter | NOT INCLUDED |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| D59005 | 3/1 Design control — primary reference O. C. Keckley Company |
NSN 4820-00-977-3934 is a Valve,regulating,fluid Pressure, classified under FSC 4820, Valves, Nonpowered. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5305-01-214-3879, 5305-01-214-3880, 4820-01-214-3903. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-00-977-3934: First End Bolt Hole Quantity: 4; Valve Stem Design: SINGLE SEAT; Renewable Seat Ring Type: PRESSED-IN; Second End Relationship with First End: IDENTICAL. 24 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.