The Valve,check, cataloged under National Stock Number 4820-01-644-6328, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Walvoil Fluid Power Corp. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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 | 4820-01-644-6328 |
| Primary Part Number | SD14 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Walvoil Fluid Power Corp |
| Status | ACTIVE |
| Maximum Operating Temp | 176.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Valve Operation Method | MANUAL |
| Media for Which Designed | OIL SINGLE RESPONSE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| SD14 PRIMARY | Walvoil Fluid Power Corp (USA) |
NSN 4820-01-644-6328 is a Valve,check, manufactured by Walvoil Fluid Power Corp, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-644-6328 has 1 cross-referenced part number: SD14 (Walvoil Fluid Power Corp).
There are 3 known substitutes for 4820-01-644-6328: 5120-00-020-5633, 3455-01-041-6792, 5120-01-394-4304. Verify interchangeability with system specifications before substitution.
Key specifications for SD14: Maximum Operating Temp: 176.0 FAHRENHEIT SINGLE RESPONSE DEGF; Part Name Assigned by Controlling Agency: MONOBLCO DIRECTIONAL CONTROL VALVE; Special Features: OPERATING PRESSURE: 3600PSI; NOMINAL FLOW RATE: 32 US GPM US; Valve Operation Method: MANUAL. 5 total characteristics are documented in the Federal Logistics Information System.