The Valve,expansion, cataloged under National Stock Number 4820-01-372-8101, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Superior Valve Co. Government technical data includes 7 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-372-8101 |
| Primary Part Number | 257B-14S |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Superior Valve Co |
| Status | ACTIVE |
| Body Style | STRAIGHT THRU Y-PATTERN GIVE "ADQL" ONLY WHEN BOTH ENDS FLANGED |
| End Connection Quantity | 2 |
| Flow Control Device | DISK, PLUG TYPE |
| Second End Relationship with First End | IDENTICAL |
| First End Outside Diameter Tube Accommodated | 0.875 INCHES NOMINAL IN |
| First End Connection Type | UNTHREADED EXTERNAL TUBE |
| First End Style Designator | PLAIN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-372-8101 is a Valve,expansion, manufactured by Superior Valve Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-372-8101 has 2 cross-referenced part numbers: 257B-14S (Superior Valve Co), 257B (Superior Valve Co).
There are 7 known substitutes for 4820-01-372-8101: 4310-00-173-5268, 5945-00-247-8364, 5940-00-269-2219 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 257B-14S: Body Style: STRAIGHT THRU Y-PATTERN GIVE "ADQL" ONLY WHEN BOTH ENDS FLANGED; End Connection Quantity: 2; Flow Control Device: DISK, PLUG TYPE; Second End Relationship with First End: IDENTICAL. 7 total characteristics are documented in the Federal Logistics Information System.