The Valve,ball, cataloged under National Stock Number 4820-01-059-0349, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tyco Fire Products Lp. Government technical data includes 17 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-059-0349 |
| Primary Part Number | V3274ASSYB |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tyco Fire Products Lp |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flange Face Design | PLAIN ALL ENDS |
| Bolt Circle Nominal Diameter | 3.562 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Material Document and Classification | -1L-C-20159,TYPE 2 MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Bolt Hole Nominal Diameter | 0.312 INCHES ALL ENDS IN |
| Valve Size | 1.250 INCHES IN |
| Nominal Outside Diameter | 4.500 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 4 ALL ENDS |
| Face to Face Distance | 7.625 INCHES IN |
| Material | NICKEL ALLOY STEM |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Material | PLASTIC POLYAMIDE NYLON SEAT |
| Material | NICKEL ALLOY BODY |
| Valve Operation Method | MANUAL |
| Nominal Thickness | 0.812 INCHES ALL ENDS IN |
| 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 |
|---|---|
| V3274ASSYB PRIMARY | Tyco Fire Products Lp (USA) |
| Reference | Meaning |
|---|---|
| V3274 | D/9 Drawing number reference only Tyco Fire Products Lp |
| V3274ASSYB1 1-4 | C/1 Advisory reference — outside the item-of-supply concept Rockwood Systems Corp |
| V3274ASSYB1 1-4 | C/1 Advisory reference — outside the item-of-supply concept Portland Valve Llc |
NSN 4820-01-059-0349 is a Valve,ball, manufactured by Tyco Fire Products Lp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-059-0349 has 1 manufacturer part number on file: V3274ASSYB (Tyco Fire Products Lp).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-066-9531, 4820-01-069-4950. Verify interchangeability with system specifications before substitution.
Key specifications for V3274ASSYB: Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Bolt Circle Nominal Diameter: 3.562 INCHES ALL ENDS IN; Connection Type: FLANGE ALL ENDS. 17 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.