The Seat,valve, cataloged under National Stock Number 4820-01-088-0897, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-088-0897 |
| Primary Part Number | C4759B |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Griswold Industries Dba Cla-Val Co |
| Status | ACTIVE |
| Body Stepped Inside Diameter | 5.065 INCHES NOMINAL SECOND STEP IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UN SINGLE THREADED PORTION |
| Style Designator | THREADED FLANGED |
| Thread Quantity Per Inch | 12 SINGLE THREADED PORTION |
| Nominal Thread Size | 5.750 INCHES SINGLE THREADED PORTION IN |
| Body Stepped Inside Diameter | 5.130 INCHES NOMINAL FIRST STEP IN |
| Flange Seat to Disk End Height | 0.405 INCHES NOMINAL IN |
| Body Stepped Inside Diameter | 5.000 INCHES NOMINAL THIRD STEP IN |
| Seat Radius | 0.250 INCHES NOMINAL IN |
| Flange Diameter | 6.188 INCHES NOMINAL IN |
| Under Flange Height | 2.250 INCHES NOMINAL IN |
| Thread Length | 0.500 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Seating Surface Shape | RADIAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| C2820PC11 | Griswold Industries Dba Cla-Val Co (USA) |
| C4759B PRIMARY | Griswold Industries Dba Cla-Val Co (USA) |
| 3230203 PIECE 11 | Naval Ship Systems Command (USA) |
| C4759 | Griswold Industries Dba Cla-Val Co (USA) |
NSN 4820-01-088-0897 is a Seat,valve, manufactured by Griswold Industries Dba Cla-Val Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-088-0897 has 4 cross-referenced part numbers: C2820PC11 (Griswold Industries Dba Cla-Val Co), C4759B (Griswold Industries Dba Cla-Val Co), 3230203 PIECE 11 (Naval Ship Systems Command), C4759 (Griswold Industries Dba Cla-Val Co).
There are 2 known substitutes for 4820-01-088-0897: 4470-00-889-2455, 4820-01-100-1946. Verify interchangeability with system specifications before substitution.
Key specifications for C4759B: Body Stepped Inside Diameter: 5.065 INCHES NOMINAL SECOND STEP IN; Thread Class: 2A SINGLE THREADED PORTION A; Material: COPPER ALLOY OVERALL; Thread Series Designator: UN SINGLE THREADED PORTION. 15 total characteristics are documented in the Federal Logistics Information System.