The Valve,flow Control, cataloged under National Stock Number 4820-00-138-1833, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Griswold Industries Dba Cla-Val Co. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, 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 | 4820-00-138-1833 |
| Primary Part Number | 81661B |
| Item Name | Valve,flow Control |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Griswold Industries Dba Cla-Val Co |
| Status | ACTIVE |
| Nominal Thread Size | 1.250 INCHES IN |
| Thread Series Designator | NPT |
| Disk Material | PLASTIC ACETAL |
| Body Material | IRON CAST |
| End Connection Quantity | 2 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 7100KH1-1-4 | Griswold Industries Dba Cla-Val Co (USA) |
| 81661 | Griswold Industries Dba Cla-Val Co (USA) |
| 81661B PRIMARY | Griswold Industries Dba Cla-Val Co (USA) |
NSN 4820-00-138-1833 is a Valve,flow Control, manufactured by Griswold Industries Dba Cla-Val Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-138-1833 has 3 cross-referenced part numbers: 7100KH1-1-4 (Griswold Industries Dba Cla-Val Co), 81661 (Griswold Industries Dba Cla-Val Co), 81661B (Griswold Industries Dba Cla-Val Co).
There are 3 known substitutes for 4820-00-138-1833: 6145-01-212-0270, 5120-01-367-3378, 4820-01-377-6648. Verify interchangeability with system specifications before substitution.
Key specifications for 81661B: Nominal Thread Size: 1.250 INCHES IN; Thread Series Designator: NPT; Disk Material: PLASTIC ACETAL; Body Material: IRON CAST. 5 total characteristics are documented in the Federal Logistics Information System.