The Valve Assembly,manifold, cataloged under National Stock Number 4820-01-334-0138, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Trident Maritime Systems, Inc.. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-334-0138 |
| Primary Part Number | WCD-P1893 |
| Item Name | Valve Assembly,manifold |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Trident Maritime Systems, Inc. |
| Status | ACTIVE |
| Valve Quantity | 4 |
| Maximum Operating Temp and Media for Which Designed | 180.0 FAHRENHEIT LIQUID DEGF |
| Operating Pressure and Type | 2500.0 POUNDS PER SQUARE INCH (PSI) LIQUID MAXIMUM REQUIRED LBS |
| Connection Type | THREADED EXTERNAL TUBE |
| Body Material | STEEL |
| Valve Operation Method | AUTOMATIC AND MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| WCD-P1893 PRIMARY | Trident Maritime Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| P1893 | 5/9 Secondary reference Continental Machines Inc Continental Hydraulics Div |
NSN 4820-01-334-0138 is a Valve Assembly,manifold, manufactured by Trident Maritime Systems, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-334-0138 has 1 manufacturer part number on file: WCD-P1893 (Trident Maritime Systems, Inc.).
Key specifications for WCD-P1893: Valve Quantity: 4; Maximum Operating Temp and Media for Which Designed: 180.0 FAHRENHEIT LIQUID DEGF; Operating Pressure and Type: 2500.0 POUNDS PER SQUARE INCH (PSI) LIQUID MAXIMUM REQUIRED LBS; Connection Type: THREADED EXTERNAL TUBE. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.