The Stem,fluid Valve, cataloged under National Stock Number 4820-01-494-0511, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Newmans Inc New Jersey Div. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-494-0511 |
| Primary Part Number | 1IN A2253-00 IT3 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Newmans Inc New Jersey Div |
| Status | ACTIVE |
| Valve Type for Which Designed | STOP-CHECK |
| Stem Actuating End Type | KNOB |
| Valve Model Number for Which Designed | NPS 1/2-2 CLASS 150 |
| Valve Size for Which Designed | 1.0000 INCHES IN |
| Material | STEEL COMP 316 |
| 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 |
|---|---|
| 1IN A2253-00 IT3 PRIMARY | Newmans Inc New Jersey Div (USA) |
| 1IN A2253-00 IT3 | Nightwine Valves & Actuation, Llc (USA) |
| Reference | Meaning |
|---|---|
| A2253-00 IT3 | C/1 Advisory reference — outside the item-of-supply concept Newmans Inc New Jersey Div |
| A2253-00 | D/9 Drawing number reference only Newmans Inc New Jersey Div |
NSN 4820-01-494-0511 is a Stem,fluid Valve, manufactured by Newmans Inc New Jersey Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-494-0511 has 2 manufacturer part numbers on file: 1IN A2253-00 IT3 (Newmans Inc New Jersey Div), 1IN A2253-00 IT3 (Nightwine Valves & Actuation, Llc).
Key specifications for 1IN A2253-00 IT3: Valve Type for Which Designed: STOP-CHECK; Stem Actuating End Type: KNOB; Valve Model Number for Which Designed: NPS 1/2-2 CLASS 150; Valve Size for Which Designed: 1.0000 INCHES IN. 5 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.