The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-181-8015, 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 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-181-8015 |
| Primary Part Number | 3320 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tyco Fire Products Lp |
| Status | ACTIVE |
| Flow Control Device | DISK |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | NOT IDENTICAL |
| Offset Distance | 3.000 INCHES NOMINAL IN |
| Body Style | STRAIGHT THRU W/OFFSET |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Style Designator | GASKET SEAL |
| End Connection Quantity | 2 |
| Second End Thread Direction | RIGHT-HAND |
| Valve Loading Method | SPRING |
| Mounting Facility | STUD |
| Second End Style Designator | PLAIN |
| First End Connection Type | THREADED INTERNAL PIPE |
| Material | ALUMINUM ALLOY BODY |
| Media for Which Designed | NITROGEN, GASEOUS |
| Second End Connection Type | THREADED INTERNAL PIPE |
| Thread Size and Series/type Designator | 0.438-20 NPTF FIRST END |
| Thread Size and Series/type Designator | 0.438-20 NPTF SECOND END |
| Filter | NOT INCLUDED |
| 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 |
|---|---|
| 3320 PRIMARY | Tyco Fire Products Lp (USA) |
NSN 4820-00-181-8015 is a Valve,regulating,fluid Pressure, manufactured by Tyco Fire Products Lp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-181-8015 has 1 manufacturer part number on file: 3320 (Tyco Fire Products Lp).
Key specifications for 3320: Flow Control Device: DISK; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: NOT IDENTICAL; Offset Distance: 3.000 INCHES NOMINAL IN. 19 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.