The Disk,valve, cataloged under National Stock Number 4820-01-461-2977, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ametek Inc Schutte and Koerting Div. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-461-2977 |
| Primary Part Number | 75E-0088V-002 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ametek Inc Schutte and Koerting Div |
| Status | ACTIVE |
| Shank Diameter | 1.834 INCHES MINIMUM AND 1.854 INCHES MAXIMUM IN |
| Flange Seat to Disk End Height | 2.750 INCHES MAXIMUM IN |
| Pressure Rating | 425.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Outside Diameter | 16.8750 INCHES MAXIMUM IN |
| Style Designator | SWING CHECK |
| Specification/standard Data | 81349MIL-S-901D GOVERNMENT STANDARD |
| Media for Which Designed | HYDRAULIC FLUID |
| Test Data Document | 7W166-26593639 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | STEEL |
| 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 |
|---|---|
| 75E-0088V-002 PRIMARY | Ametek Inc Schutte and Koerting Div (USA) |
| 68-XA-4 PC2 PRIMARY | Ametek Inc Schutte and Koerting Div (USA) |
| Reference | Meaning |
|---|---|
| 68-XA-4 | D/9 Drawing number reference only Ametek Inc Schutte and Koerting Div |
NSN 4820-01-461-2977 is a Disk,valve, manufactured by Ametek Inc Schutte and Koerting Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-461-2977 has 2 manufacturer part numbers on file: 75E-0088V-002 (Ametek Inc Schutte and Koerting Div), 68-XA-4 PC2 (Ametek Inc Schutte and Koerting Div).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-553-3134, 3040-01-728-9483. Verify interchangeability with system specifications before substitution.
Key specifications for 75E-0088V-002: Shank Diameter: 1.834 INCHES MINIMUM AND 1.854 INCHES MAXIMUM IN; Flange Seat to Disk End Height: 2.750 INCHES MAXIMUM IN; Pressure Rating: 425.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Outside Diameter: 16.8750 INCHES MAXIMUM IN. 9 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.