The Valve,safety Relief, cataloged under National Stock Number 4820-01-148-6939, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Moog Inc. Dba Ampac-Isp Corp. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-148-6939 |
| Primary Part Number | 31498 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Moog Inc. Dba Ampac-Isp Corp |
| Status | ACTIVE |
| Bonnet Type | INSIDE SCREW |
| Adjustable Pressure Range | +0.0 TO 3000.0 POUNDS PER SQUARE INCH LBS |
| Style Designator | STRAIGHT THRU |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Bonnet Attachment Method | THREADED |
| Thread Class | 3A ALL ENDS A |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Connection Style | FLARED (TUBE) ALL ENDS |
| Thread Series Designator | UNF ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Flow Control Device | POPPET |
| Material | STEEL CORROSION RESISTING OVERALL |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Media for Which Designed | OIL, HYDRAULIC SINGLE RESPONSE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 31498 PRIMARY | Moog Inc. Dba Ampac-Isp Corp (USA) |
| 895-28365 | Moog Inc. Dba Ampac-Isp Corp (USA) |
| 895-28365 ITEM 32 | Moog Inc. Dba Ampac-Isp Corp (USA) |
NSN 4820-01-148-6939 is a Valve,safety Relief, manufactured by Moog Inc. Dba Ampac-Isp Corp, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-148-6939 has 3 cross-referenced part numbers: 31498 (Moog Inc. Dba Ampac-Isp Corp), 895-28365 (Moog Inc. Dba Ampac-Isp Corp), 895-28365 ITEM 32 (Moog Inc. Dba Ampac-Isp Corp).
There are 10 known substitutes for 4820-01-148-6939: 3040-01-109-6363, 3040-01-109-7915, 3040-01-110-1035 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 31498: Bonnet Type: INSIDE SCREW; Adjustable Pressure Range: +0.0 TO 3000.0 POUNDS PER SQUARE INCH LBS; Special Features: WITH SINTERED BREATHER; Style Designator: STRAIGHT THRU. 17 total characteristics are documented in the Federal Logistics Information System.