The Valve,angle, cataloged under National Stock Number 4820-00-287-5643, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-287-5643 |
| Item Name | Valve,angle |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Renewable Seat Ring Type | PRESSED-IN |
| Flange Face Design | RAISED STRAIGHT FIRST END |
| Bolt Circle Nominal Diameter | 4.500 INCHES FIRST END IN |
| Connection Type | FLANGE FIRST END |
| Style Designator | ANGLE FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.812 INCHES FIRST END IN |
| Operating Pressure | 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 1.500 INCHES IN |
| Features Provided | VALVE STEM LOCK SHIELD AND BONNET PACKING |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Second Connection Face to Centerline Distance | 5.750 INCHES IN |
| Nominal Outside Diameter | 6.125 INCHES FIRST END IN |
| Bolt Hole Quantity | 4 FIRST END |
| Bonnet Attachment Method | BOLTED |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| First Connection Face to Centerline Distance | 4.750 INCHES IN |
| Material | STEEL BODY |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | STEEL CORROSION RESISTING STEM |
| Raised Face Nominal Diameter | 2.875 INCHES FIRST END IN |
| Valve Operation Method | MANUAL |
| Raised Face Nominal Height | 0.250 INCHES FIRST END IN |
| Nominal Thickness | 0.875 INCHES FIRST END IN |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY TYPE C40 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| WWT799ANDTYPEN | 4/1 Identification reference U.S. Government activity |
| G956 | 3/1 Design control — primary reference Newterra Corporation, Inc. |
NSN 4820-00-287-5643 is a Valve,angle, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5220-01-591-5975. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-00-287-5643: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES FIRST END; Renewable Seat Ring Type: PRESSED-IN; Flange Face Design: RAISED STRAIGHT FIRST END. 27 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.