The Valve,safety Relief, cataloged under National Stock Number 4820-00-564-8278, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hydro-Aire Aerospace Corp. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-564-8278 |
| Primary Part Number | 28935 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Hydro-Aire Aerospace Corp |
| Status | ACTIVE |
| Connection Type | THREADED INTERNAL BOSS FIRST END |
| Flow Control Device | POPPET |
| Thread Class | 3B FIRST END |
| Adjustable Pressure Range | +2500.0 TO 4200.0 POUNDS PER SQUARE INCH LBS |
| Valve Discharge Flow Rate | 6.0 GALLONS PER MINUTE |
| Thread Quantity Per Inch | 16 FIRST END |
| Thread Series Designator | UNF FIRST END |
| Operating Pressure | 4200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Media for Which Designed | HYDRAULIC FLUID, PHOSPHATE-ESTER BASE SINGLE RESPONSE |
| Connection Style | GASKET SEAL(BOSS) FIRST END |
| Disk Loading Method | SPRING |
| Thread Direction | RIGHT-HAND FIRST END |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-00-564-8278 is a Valve,safety Relief, manufactured by Hydro-Aire Aerospace Corp, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-564-8278 has 2 cross-referenced part numbers: 28935 (Hydro-Aire Aerospace Corp), N28935 (Hydro-Aire Aerospace Corp).
There are 6 known substitutes for 4820-00-564-8278: 4730-00-278-8767, 5342-01-164-9211, 5330-01-352-5769 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 28935: Connection Type: THREADED INTERNAL BOSS FIRST END; Flow Control Device: POPPET; Thread Class: 3B FIRST END; Adjustable Pressure Range: +2500.0 TO 4200.0 POUNDS PER SQUARE INCH LBS. 13 total characteristics are documented in the Federal Logistics Information System.