The Head,safety,pressure Relief, cataloged under National Stock Number 4820-01-197-4958, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Aqua-Chem, Inc. Dba Aqua-Chem Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-197-4958 |
| Primary Part Number | 633-D7657-000 PIECE 58 |
| Item Name | Head,safety,pressure Relief |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| Status | ACTIVE |
| Head Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 633D7657 | Aqua-Chem, Inc. (USA) |
| 633D7657 PIECE 58 | Aqua-Chem, Inc. (USA) |
| 633-D7657-000 PIECE 58 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| 633-D7657-000 PIECE 58 | Aqua-Chem, Inc. (USA) |
NSN 4820-01-197-4958 is a Head,safety,pressure Relief, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-197-4958 has 4 cross-referenced part numbers: 633D7657 (Aqua-Chem, Inc.), 633D7657 PIECE 58 (Aqua-Chem, Inc.), 633-D7657-000 PIECE 58 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 633-D7657-000 PIECE 58 (Aqua-Chem, Inc.).
There are 5 known substitutes for 4820-01-197-4958: 4730-01-196-7696, 4730-01-196-9175, 4730-01-196-9206 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 633-D7657-000 PIECE 58: Head Material: COPPER ALLOY; End Item Identification: AQUA-CHEM MODEL S2100-FL-5 DISTILLER, EVAPORATOR APPLICATION. 2 total characteristics are documented in the Federal Logistics Information System.