The Valve,check, cataloged under National Stock Number 4820-01-185-9561, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Allen Aircraft Products Inc. Government technical data includes 17 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-185-9561 |
| Primary Part Number | 48C189 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Allen Aircraft Products Inc |
| Status | ACTIVE |
| Material | ALUMINUM ALLOY 380.0 STEM |
| FSC Application Data | FUEL SYSTEM, AIRCRAFT, CENTER FUSELAGE, WING ROOT TANK |
| Material | ALUMINUM ALLOY 356.0 BODY |
| Nominal Outside Diameter | 3.313 INCHES ALL ENDS IN |
| Nominal Thickness | 0.085 INCHES ALL ENDS IN |
| Mounting Position | VERTICAL |
| Material | ALUMINUM ALLOY 380.0 FLOW CONTROL DEVICE |
| Flow Control Device | SLIDESLIDE |
| Material | ALUMINUM ALLOY OVERALL |
| Material | RUBBER FLUOROSILICONE CLASS FQ PACKING |
| Flange Face Design | PLAIN ALL ENDS |
| Valve Operation Method | AUTOMATICAUTOMATIC |
| Style Designator | STRAIGHT THRU |
| Material | ALUMINUM ALLOY 6061 SEAT |
| Material | ALUMINUM ALLOY 356.0 BODY LINING |
| Connection Type | FLANGE ALL ENDS |
| Flange Shape | ROUND ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-185-9561 is a Valve,check, manufactured by Allen Aircraft Products Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-185-9561 has 3 cross-referenced part numbers: 48C139 (Allen Aircraft Products Inc), 60590 (Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems), 48C189 (Allen Aircraft Products Inc).
There are 7 known substitutes for 4820-01-185-9561: 5930-00-135-3124, 3120-00-950-1873, 3120-00-950-1874 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 48C189: Material: ALUMINUM ALLOY 380.0 STEM; FSC Application Data: FUEL SYSTEM, AIRCRAFT, CENTER FUSELAGE, WING ROOT TANK; End Item Identification: B-1BB-1B; Material: ALUMINUM ALLOY 356.0 BODY. 19 total characteristics are documented in the Federal Logistics Information System.