The Valve,stop-Check, cataloged under National Stock Number 4820-01-311-7991, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Sullair Corp. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-311-7991 |
| Primary Part Number | 250028-140 |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Sullair Corp |
| Status | ACTIVE |
| Media for Which Designed | OIL, HYDRAULIC SINGLE RESPONSE |
| Valve Operation Method | AUTOMATIC |
| Flow Control Device | DISK |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 250028-140 PRIMARY | Sullair Corp (USA) |
| 2591-803 | I-T-E Imperial Corp Subsidiary of Gould Inc Airmatic/beckett Harcum Div (USA) |
| 47477 | Sullair Corp (USA) |
NSN 4820-01-311-7991 is a Valve,stop-Check, manufactured by Sullair Corp, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-311-7991 has 3 cross-referenced part numbers: 250028-140 (Sullair Corp), 2591-803 (I-T-E Imperial Corp Subsidiary of Gould Inc Airmatic/beckett Harcum Div), 47477 (Sullair Corp).
There are 3 known substitutes for 4820-01-311-7991: 4820-01-170-9814, 5330-01-275-1957, 2990-01-370-8105. Verify interchangeability with system specifications before substitution.
Key specifications for 250028-140: Media for Which Designed: OIL, HYDRAULIC SINGLE RESPONSE; Special Features: VALVE SIZE 0.500 IN.; NORMALLY CLOSED IN; End Item Identification: MDL H 750 D PQ; SERIAL NR. 484574; Valve Operation Method: AUTOMATIC. 5 total characteristics are documented in the Federal Logistics Information System.