The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-265-0366, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Metadure Parts & Sales, Inc.. Government technical data includes 26 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-265-0366 |
| Primary Part Number | B2535 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Metadure Parts & Sales, Inc. |
| Status | ACTIVE |
| Flow Control Device | DISK |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | ANGLE |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Seat Angle in Deg | 37.0 |
| First End Thread Class | 3A A |
| First End Style Designator | FLARED |
| End Connection Quantity | 2 |
| Outlet Pressure Range | 250.0 TO 2000.0 CAMERA MOUNT |
| Second End Thread Direction | RIGHT-HAND |
| Valve Loading Method | BELLOWS |
| Specification/standard Data | 81349-MIL-R-19180 GOVERNMENT SPECIFICATION |
| Second End Style Designator | PLAIN |
| Nondefinitive Spec/std Data | 2 TYPE AND B2-W CLASS |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Second End Thread Pitch Diameters | +0.9100 TO 0.9136 INCHES IN |
| First End Outside Diameter Tube Accommodated | 0.375 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING BODY |
| Outlet Pressure Accuracy Rating | ERR-060 |
| Media for Which Designed | AIR, WATER PUMPED AND ARGON AND HELIUM AND NITROGEN, GASEOUS |
| Maximum Inlet Pressure Rating | ERR-060 |
| Second End Connection Type | THREADED EXTERNAL GAS CYLINDER |
| Thread Size and Series/type Designator | 9/16-18 UNF FIRST END |
| Thread Size and Series/type Designator | 0.960-14 NGO SECOND END |
| Filter | 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 |
|---|---|
| B2535 PRIMARY | Metadure Parts & Sales, Inc. (USA) |
| Reference | Meaning |
|---|---|
| B2535 | 5/9 Secondary reference Stewart-Thomas Industries Inc |
| 5-66033 ITEM 3 | 5/9 Secondary reference Baxter Healthcare Corp Instrument Div |
| MIL-R-19180 | 4/1 Identification reference U.S. Government activity |
| 5-66033 ITEM 3 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-265-0366 is a Valve,regulating,fluid Pressure, manufactured by Metadure Parts & Sales, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-265-0366 has 1 manufacturer part number on file: B2535 (Metadure Parts & Sales, Inc.).
Key specifications for B2535: Flow Control Device: DISK; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: NOT IDENTICAL; Body Style: ANGLE. 26 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.