The Valve,safety Relief, cataloged under National Stock Number 4820-00-881-0994, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Marotta Controls Inc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-881-0994 |
| Primary Part Number | 283675-0001 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Marotta Controls Inc |
| Status | ACTIVE |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Operation Method | AUTOMATIC |
| Flow Control Device | POPPET |
| Thread Direction | RIGHT-HAND FIRST END |
| Material | STEEL CORROSION RESISTING SEAT |
| Connection Style | PLAIN,OPTIONAL END(PIPE) FIRST END |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Opening Pressure Setting | 3750.0 POUNDS PER SQUARE INCH LBS |
| Material | STEEL CORROSION RESISTING BODY |
| Thread Series Designator | NPT FIRST END |
| Bonnet Type | PACKING RETAINING |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Nominal Thread Size | 0.250 INCHES FIRST END IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 5349B2PP-3750 | Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA) |
| 322AS148-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 283675-0001 PRIMARY | Marotta Controls Inc (USA) |
| A10157 | Stewart Avionics Inc (USA) |
| 10137-1 | Metadure Parts & Sales, Inc. (USA) |
| 322AS185-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| PRV45 | Marotta Controls Inc (USA) |
| RV99-75-1 PRIMARY | Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA) |
| PRV45C/281327-0001 | Marotta Controls Inc (USA) |
| 322AS185-1 | Scovill Inc Schrader Bellows Div (USA) |
NSN 4820-00-881-0994 is a Valve,safety Relief, manufactured by Marotta Controls Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-881-0994 has 10 cross-referenced part numbers: 5349B2PP-3750 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), 322AS148-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 283675-0001 (Marotta Controls Inc), A10157 (Stewart Avionics Inc), 10137-1 (Metadure Parts & Sales, Inc.) and 5 more.
There are 4 known substitutes for 4820-00-881-0994: 5935-00-872-6705, 5961-01-175-8437, 5962-01-476-2958 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 283675-0001: Style Designator: STRAIGHT THRU; Operating Pressure: 4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Valve Operation Method: AUTOMATIC; Flow Control Device: POPPET. 14 total characteristics are documented in the Federal Logistics Information System.