The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-230-3530, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Messer Llc. Government technical data includes 23 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 | 4820-00-230-3530 |
| Primary Part Number | 806-8420 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Messer Llc |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | NOT IDENTICAL |
| Second End Thread Class | 3B |
| Remote Actuation Method | DIAPHRAGM |
| Body Style | STRAIGHT THRU |
| Regulation Type | AUTOMATIC DOUBLE STAGE |
| First End Style Designator | PLAIN |
| Temp Rating | 120.0 FAHRENHEIT MAXIMUM DEGF |
| End Connection Quantity | 2 |
| Second End Thread Direction | RIGHT-HAND |
| Manual Control Method | SCREW |
| Valve Loading Method | SPRING |
| Second End Style Designator | PLAIN |
| First End Connection Type | THREADED INTERNAL TUBE |
| First End Outside Diameter Tube Accommodated | 0.908 INCHES NOMINAL IN |
| Material | RUBBER SEAT |
| Media for Which Designed | NITROGEN, LIQUID |
| Second End Connection Type | THREADED INTERNAL TUBE |
| Thread Size and Series/type Designator | 0.908-14 UNS FIRST END |
| Thread Size and Series/type Designator | 5/8-18 UNF SECOND END |
| Filter | INCLUDED |
| Second End Outside Diameter Tube Accommodated | 0.625 INCHES NOMINAL 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 |
|---|---|
| 806-8420 PRIMARY | Messer Llc (USA) |
NSN 4820-00-230-3530 is a Valve,regulating,fluid Pressure, manufactured by Messer Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-230-3530 has 1 manufacturer part number on file: 806-8420 (Messer Llc).
Key specifications for 806-8420: Flow Control Device: DIAPHRAGM; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: NOT IDENTICAL; Second End Thread Class: 3B. 23 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.