The Stem,fluid Valve, cataloged under National Stock Number 4820-01-195-0148, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Crane Co Div Valve Div. Government technical data includes 6 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-195-0148 |
| Primary Part Number | 29963 PIECE 23 ASCS 1 1/2IN |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Crane Co Div Valve Div |
| Status | ACTIVE |
| Valve Type for Which Designed | STOP-CHECK |
| Stem Actuating End Type | THREADED EXTERNALLY |
| Valve Model Number for Which Designed | 3652U |
| Material Document and Classification | ASTM A120 ASSN STD SINGLE MATERIAL RESPONSE |
| Valve Size for Which Designed | 1.500 INCHES IN |
| Material | STEEL |
| 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 |
|---|---|
| 29963 PIECE 23 ASCS 1 1/2IN PRIMARY | Crane Co Div Valve Div (USA) |
| Reference | Meaning |
|---|---|
| 29963 | D/9 Drawing number reference only Crane Co Div Valve Div |
| 2620-920X1 PIECE 23 ASCS 1 1/2 | 5/9 Secondary reference U.S. Government activity |
| 1889549 | D/9 Drawing number reference only U.S. Government activity |
| 2620-920X1 | D/9 Drawing number reference only U.S. Government activity |
| 2620-920X1 PIECE 23 ASCS 1 1/2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-195-0148 is a Stem,fluid Valve, manufactured by Crane Co Div Valve Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-195-0148 has 1 manufacturer part number on file: 29963 PIECE 23 ASCS 1 1/2IN (Crane Co Div Valve Div).
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-219-6627, 4820-01-232-5999, 4820-01-239-0320. Verify interchangeability with system specifications before substitution.
Key specifications for 29963 PIECE 23 ASCS 1 1/2IN: Valve Type for Which Designed: STOP-CHECK; Stem Actuating End Type: THREADED EXTERNALLY; Valve Model Number for Which Designed: 3652U; Material Document and Classification: ASTM A120 ASSN STD SINGLE MATERIAL RESPONSE. 6 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.