The Valve,flow Control, cataloged under National Stock Number 4820-01-571-3620, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Griswold Controls Llc. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-571-3620 |
| Primary Part Number | 3542LJ 70GPM |
| Item Name | Valve,flow Control |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Griswold Controls Llc |
| Status | ACTIVE |
| Maximum Operating Temp and Media for Which Designed | 350.0 FAHRENHEIT WATER DEGF |
| Body Material Document and Classification | NAVAL BRONZE ASTM B61-922 ASSN STD SINGLE MATERIAL RESPONSE |
| Operating Pressure and Type | 250.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS |
| End Connection Quantity | 2 |
| Body Material | COPPER ALLOY |
| 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 |
|---|---|
| 3542LJ 70GPM PRIMARY | Griswold Controls Llc (USA) |
| 24087-512-0137 A02 PC 2 | Imeco Inc (USA) |
NSN 4820-01-571-3620 is a Valve,flow Control, manufactured by Griswold Controls Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-571-3620 has 2 manufacturer part numbers on file: 3542LJ 70GPM (Griswold Controls Llc), 24087-512-0137 A02 PC 2 (Imeco Inc).
Key specifications for 3542LJ 70GPM: Maximum Operating Temp and Media for Which Designed: 350.0 FAHRENHEIT WATER DEGF; Body Material Document and Classification: NAVAL BRONZE ASTM B61-922 ASSN STD SINGLE MATERIAL RESPONSE; Operating Pressure and Type: 250.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS; End Connection Quantity: 2. 5 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.