The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-980-3653, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div. Government technical data includes 5 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-980-3653 |
| Primary Part Number | 4-4-250 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div |
| Status | ACTIVE |
| Material Thickness | 0.007 INCHES NOMINAL IN |
| Outside Diameter | 4.812 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Style Designator | FLAT |
| Center Hole Diameter | 0.513 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-00-980-3653 is a Diaphragm,valve,flat, manufactured by Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-980-3653 has 2 cross-referenced part numbers: 4-4-250 (Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div), 4-4-553 (Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div).
There are 6 known substitutes for 4820-00-980-3653: 4720-00-802-1952, 3455-01-045-7942, 5950-01-134-1270 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 4-4-250: Material Thickness: 0.007 INCHES NOMINAL IN; Outside Diameter: 4.812 INCHES NOMINAL IN; Material: STEEL CORROSION RESISTING; Style Designator: FLAT. 5 total characteristics are documented in the Federal Logistics Information System.