The Valve,angle, cataloged under National Stock Number 4820-00-137-9203, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-137-9203 |
| Item Name | Valve,angle |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Nominal Pipe Size Accommodated | 5.000 INCHES ALL ENDS IN |
| Connection Style | BEVELED (PIPE) ALL ENDS |
| Style Designator | ANGLE |
| Material Document and Classification | A182,GRADE F11 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Features Provided | BONNET PACKING |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Maximum Operating Temp | 975.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nondefinitive Spec/std Data | B COMPOSITION |
| Bonnet Attachment Method | PRESSURE SEAL, RING TYPE |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Test Data Document | 81349-MIL-S-901 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 BODY |
| Material | COBALT ALLOY SEAT |
| Material | COBALT ALLOY FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING STEM |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| B13-3074P-05TS | C/1 Advisory reference — outside the item-of-supply concept Velan Valve Corp. |
| CS4820-0015ECFTPRQB | 5/9 Secondary reference Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| D20276 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| MIL-DTL-22052 | 4/1 Identification reference U.S. Government activity |
| MIL-V-22052 | 5/9 Secondary reference U.S. Government activity |
| CS4820-0015ECFTPRQB | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-137-9203 is a Valve,angle, classified under FSC 4820, Valves, Nonpowered. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-365-5249, 4820-01-365-9247. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-00-137-9203: Flow Control Device: DISK; Nominal Pipe Size Accommodated: 5.000 INCHES ALL ENDS IN; Connection Style: BEVELED (PIPE) ALL ENDS; Style Designator: ANGLE. 18 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.