The Valve,check, cataloged under National Stock Number 4820-01-028-4481, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Electro Impulse Laboratory Inc Dba Electro Impulse Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, 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 | 4820-01-028-4481 |
| Primary Part Number | B12808 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Electro Impulse Laboratory Inc Dba Electro Impulse Inc |
| Status | ACTIVE |
| Valve Operation Method | AUTOMATIC |
| Flow Control Device | POPPET |
| Disk Loading Method | SPRING |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Material | PLASTIC ACETAL FLOW CONTROL DEVICE |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Series Designator | NPT ALL ENDS |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Material | COPPER ALLOY BODY |
| Mounting Position | HORIZONTAL |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 12058 | Electro Impulse Laboratory Inc Dba Electro Impulse Inc (USA) |
| 5X782 | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| B12808 PRIMARY | Electro Impulse Laboratory Inc Dba Electro Impulse Inc (USA) |
| C12058BPC1 PRIMARY | Electro Impulse Laboratory Inc Dba Electro Impulse Inc (USA) |
NSN 4820-01-028-4481 is a Valve,check, manufactured by Electro Impulse Laboratory Inc Dba Electro Impulse Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-028-4481 has 4 cross-referenced part numbers: 12058 (Electro Impulse Laboratory Inc Dba Electro Impulse Inc), 5X782 (W.w. Grainger, Inc. Div Government Sales Division), B12808 (Electro Impulse Laboratory Inc Dba Electro Impulse Inc), C12058BPC1 (Electro Impulse Laboratory Inc Dba Electro Impulse Inc).
There are 10 known substitutes for 4820-01-028-4481: 3110-00-100-0243, 5133-00-189-9185, 5133-00-266-9466 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for B12808: Valve Operation Method: AUTOMATIC; Flow Control Device: POPPET; Disk Loading Method: SPRING; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 14 total characteristics are documented in the Federal Logistics Information System.