The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-997-8936, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-997-8936 |
| Primary Part Number | 1085834-5REVM |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Flow Control Device | PISTON, SPRING LOADED |
| Valve Stem Design | SINGLE SEAT |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Surface Treatment Document and Classification | MIL-C-15328 MIL SPEC 1ST TREATMENT RESPONSE AND AN-P-735 ASSN STD 2ND TREATMENT RESPONSE AND MIL-E-15090 TYPE 2 CLASS 2 MIL SPEC 3RD TREATMENT RESPONSE OUTSIDE |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 3.875 INCHES NOMINAL IN |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Style Designator | PLAIN |
| Material Document and Classification | UNABLE TO DECODE |
| End Connection Quantity | 2 |
| Outlet Pressure Range | 40.0 TO 110.0 CAMERA MOUNT |
| Valve Loading Method | SPRING |
| First End Connection Type | THREADED INTERNAL PIPE |
| Surface Treatment | CHROMATE ZINC AND PAINT OUTSIDE |
| Material | COPPER ALLOY 836 BODY |
| Material | COPPER ALLOY 836 FLOW CONTROL DEVICE |
| Media for Which Designed | ETHYLENE GLYCOL AND WATER, FRESH |
| Maximum Inlet Pressure Rating | ERR-060 |
| Thread Size and Series/type Designator | 0.375-18 NPT FIRST END |
| Outlet Pressure Setting | ERR-060 |
| 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 |
|---|---|
| 2105772-5 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 1085834-5REVM PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| Reference | Meaning |
|---|---|
| 1085834 | D/9 Drawing number reference only Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 4820-00-997-8936 is a Valve,regulating,fluid Pressure, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-997-8936 has 2 manufacturer part numbers on file: 2105772-5 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 1085834-5REVM (Lockheed Martin Corporation Div Rms - Mitchel Field).
Key specifications for 1085834-5REVM: Flow Control Device: PISTON, SPRING LOADED; Valve Stem Design: SINGLE SEAT; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL. 22 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.