The Valve,y, cataloged under National Stock Number 4820-00-391-9356, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Crane Co Div Valve Div. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 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 | 4820-00-391-9356 |
| Primary Part Number | 20721 |
| Item Name | Valve,y |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Crane Co Div Valve Div |
| Status | ACTIVE |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Flow Control Device | DISK |
| Nominal Thickness | 2.000 INCHES FIRST END IN |
| Bolt Circle Nominal Diameter | 6.625 INCHES FIRST END IN |
| Flange Face Design | RAISED STRAIGHT FIRST END |
| Nominal Outside Diameter | 8.250 INCHES FIRST END IN |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Bolt Hole Nominal Diameter | 0.812 INCHES FIRST END IN |
| Raised Face Nominal Height | 0.125 INCHES FIRST END IN |
| Material | STEEL BODY |
| Valve Operation Method | MANUAL |
| Bonnet Attachment Method | THREADED |
| Face to Face Distance | 14.000 INCHES IN |
| Style Designator | STRAIGHT THRU Y-PATTERN |
| Connection Type | FLANGE FIRST END |
| Bolt Hole Quantity | 8 FIRST END |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20721 PRIMARY | Crane Co Div Valve Div (USA) |
| DD445S4810-243 | Naval Ship Systems Command (USA) |
NSN 4820-00-391-9356 is a Valve,y, manufactured by Crane Co Div Valve Div, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-391-9356 has 2 cross-referenced part numbers: 20721 (Crane Co Div Valve Div), DD445S4810-243 (Naval Ship Systems Command).
There are 7 known substitutes for 4820-00-391-9356: 4820-00-278-6555, 6220-00-886-1791, 6515-00-926-2089 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20721: Bonnet Type: OUTSIDE SCREW-YOKE; Flow Control Device: DISK; Nominal Thickness: 2.000 INCHES FIRST END IN; Bolt Circle Nominal Diameter: 6.625 INCHES FIRST END IN. 17 total characteristics are documented in the Federal Logistics Information System.