The Valve,ball, cataloged under National Stock Number 4820-01-464-0246, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Nibco Inc Chemtrol Div. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-464-0246 |
| Primary Part Number | U51TB-U 2IN |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Nibco Inc Chemtrol Div |
| Status | ACTIVE |
| Flange Shape | ROUND ALL ENDS |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Valve Size | 2.000 INCHES IN |
| Maximum Operating Temp | 150.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nominal Outside Diameter | 6.000 INCHES ALL ENDS IN |
| Mounting Facility | BRACKET(S) |
| Face to Face Distance | 11.380 INCHES IN |
| Media for Which Designed | WATER, FRESH SINGLE RESPONSE |
| Material | PLASTIC BODY |
| Raised Face Nominal Diameter | 6.000 INCHES ALL ENDS IN |
| 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 |
|---|---|
| U51TB-U 2IN PRIMARY | Nibco Inc Chemtrol Div (USA) |
| Reference | Meaning |
|---|---|
| U515TB-U 2IN | C/1 Advisory reference — outside the item-of-supply concept Nibco Inc |
| U51TB-V 2IN | C/1 Advisory reference — outside the item-of-supply concept Nibco Inc Chemtrol Div |
NSN 4820-01-464-0246 is a Valve,ball, manufactured by Nibco Inc Chemtrol Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-464-0246 has 1 manufacturer part number on file: U51TB-U 2IN (Nibco Inc Chemtrol Div).
Key specifications for U51TB-U 2IN: Flange Shape: ROUND ALL ENDS; Flange Face Design: RAISED STRAIGHT ALL ENDS; Style Designator: STRAIGHT THRU FLANGED ENDS; Valve Size: 2.000 INCHES IN. 12 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.