The Valve,ball, cataloged under National Stock Number 4820-01-491-3014, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Swagelok Co. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-491-3014 |
| Primary Part Number | SS-83XKS8 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 HANDLE AND 1 NUT |
| Minimum Operating Temp | -17.0 CELSIUS DEGC |
| Style Designator | CROSS FLANGED ENDS |
| Material Document and Classification | ASTM-A276 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | ASTM-A479 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | SAE-AMS 3650 ASSN STD 1ST MATERIAL RESPONSE OR ASTM-D1710 ASSN STD 2ND MATERIAL RESPONSE SEAT |
| Valve Size | 0.500 INCHES IN |
| Bonnet Type | PACKING RETAINING |
| Face to Face Distance | 4.600 INCHES IN |
| First Connection Face to Centerline Distance | 1.060 INCHES IN |
| Material | STEEL COMP 316 BODY |
| Material | STEEL COMP 316 STEM |
| Material | PLASTIC POLYCHLOROTRIFLUOROETHYLENE OR PLASTIC POLYTETRAFLUOROETHYLENE OR PLASTIC POLYAMIDE NYLON SEAT |
| 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 |
| Part Number | Manufacturer |
|---|---|
| SS-83XKS8 PRIMARY | Swagelok Co (USA) |
| Reference | Meaning |
|---|---|
| ASC1511269 | 5/9 Secondary reference Asc Pty Ltd |
NSN 4820-01-491-3014 is a Valve,ball, manufactured by Swagelok Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-491-3014 has 1 manufacturer part number on file: SS-83XKS8 (Swagelok Co).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-494-9231. Verify interchangeability with system specifications before substitution.
Key specifications for SS-83XKS8: Furnished Items and Quantity: 1 HANDLE AND 1 NUT; Minimum Operating Temp: -17.0 CELSIUS DEGC; Style Designator: CROSS FLANGED ENDS; Material Document and Classification: ASTM-A276 ASSN STD SINGLE MATERIAL RESPONSE STEM. 14 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.