The Valve,check, cataloged under National Stock Number 4820-01-028-1506, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Crissair Inc Div Esco Technologies. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-028-1506 |
| Primary Part Number | 4C2858-1 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Crissair Inc Div Esco Technologies |
| Status | ACTIVE |
| Thread Class | 3A SECOND END A |
| Connection Style | FLARELESS FIRST END |
| Seat Angle | 37.0 DEGREES SECOND END |
| Seat Angle | 37.0 DEGREES FIRST END |
| Flow Control Device | POPPET |
| Nominal Thread Size | 0.750 INCHES SECOND END IN |
| Maximum Operating Temp | 275.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Connection Style | FLARELESS SECOND END |
| Thread Series Designator | UNF FIRST END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Thread Class | 3A FIRST END A |
| Thread Direction | RIGHT-HAND SECOND END |
| Valve Operation Method | AUTOMATIC |
| Media for Which Designed | OIL, HYDRAULIC SINGLE RESPONSE |
| Thread Direction | RIGHT-HAND FIRST END |
| Disk Loading Method | SPRING |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Material | STEEL CORROSION RESISTING BODY |
| Thread Series Designator | UNF SECOND END |
| Operating Pressure | 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | STEEL COMP 440C FLOW CONTROL DEVICE |
| Style Designator | STRAIGHT THRU |
| Nominal Thread Size | 0.875 INCHES FIRST END IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A15HS017-4 | The Boeing Company (USA) |
| M38510/10709BYC | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 4C2858-1 PRIMARY | Crissair Inc Div Esco Technologies (USA) |
NSN 4820-01-028-1506 is a Valve,check, manufactured by Crissair Inc Div Esco Technologies, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-028-1506 has 3 cross-referenced part numbers: A15HS017-4 (The Boeing Company), M38510/10709BYC (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 4C2858-1 (Crissair Inc Div Esco Technologies).
There is 1 known substitute for 4820-01-028-1506: 5962-01-128-1506. Verify interchangeability with system specifications before substitution.
Key specifications for 4C2858-1: Thread Class: 3A SECOND END A; Connection Style: FLARELESS FIRST END; Seat Angle: 37.0 DEGREES SECOND END; Seat Angle: 37.0 DEGREES FIRST END. 24 total characteristics are documented in the Federal Logistics Information System.