The Valve,fire Check, cataloged under National Stock Number 4820-01-435-4670, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Robert H Wager Co Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-435-4670 |
| Primary Part Number | 3-1600SILB |
| Item Name | Valve,fire Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Robert H Wager Co Inc |
| Status | ACTIVE |
| Body Style | STRAIGHT THRU |
| Material | COPPER ALLOY BODY |
| Media for Which Designed | AIR |
| 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 |
|---|---|
| 3-1600SILB PRIMARY | Robert H Wager Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 1600-3IN-SILBRAZ-BRNZ | 5/9 Secondary reference Robert H Wager Co Inc |
| 1600W-3IN SILBR | C/1 Advisory reference — outside the item-of-supply concept Robert H Wager Co Inc |
| 1600-W 3IN SILB | C/1 Advisory reference — outside the item-of-supply concept Robert H Wager Co Inc |
NSN 4820-01-435-4670 is a Valve,fire Check, manufactured by Robert H Wager Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-435-4670 has 1 manufacturer part number on file: 3-1600SILB (Robert H Wager Co Inc).
Key specifications for 3-1600SILB: Body Style: STRAIGHT THRU; Special Features: INCL MESH FLAME SCREEN 1, SPACER RING 1, PROTECTING SCREEN 1, CAP 1; ONE END 6.250 IN. OD, OTHER END 3.500 IN. OD, 3.844 IN. LG, 3.000 IN. SZ IN; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Material: COPPER ALLOY BODY. 3 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.