The Coupler,reverse Osmosis Pressure, cataloged under National Stock Number 4620-01-505-3370, is classified within Federal Supply Class 4620 (Water Distillation Equipment, Marine and Industrial) of the Water Purification and Sewage Treatment group. The manufacturer of record is Aqua-Chem, Inc. Dba Aqua-Chem Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4620-01-505-3370 |
| Primary Part Number | 020-07860-000 |
| Item Name | Coupler,reverse Osmosis Pressure |
| FSC / FSG | 4620 / 46 — Water Distillation Equipment, Marine and Industrial |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| Status | ACTIVE |
| Material | COPPER ALLOY AND NICKEL 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 |
|---|---|
| 020-07860-000 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| 843-C-8039 ITEM 203 | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| Reference | Meaning |
|---|---|
| 843-C-8039 | D/9 Drawing number reference only Aqua-Chem, Inc. Dba Aqua-Chem Inc |
NSN 4620-01-505-3370 is a Coupler,reverse Osmosis Pressure, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 4620, Water Distillation Equipment, Marine and Industrial. Status: active.
NSN 4620-01-505-3370 has 2 manufacturer part numbers on file: 020-07860-000 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 843-C-8039 ITEM 203 (Aqua-Chem, Inc. Dba Aqua-Chem Inc).
1 possible match (shared part number, not a government interchangeability claim): 4620-01-505-3375. Verify interchangeability with system specifications before substitution.
Key specifications for 020-07860-000: Special Features: 2IN. DIAMETER IN; Part Name Assigned by Controlling Agency: COUPLER, REVERSE OSMOSIS PRESSURE VESSEL; End Item Identification: REVERSE OSMOSIS PRESSURE VESSEL 8IN 1000PSI IN; Material: COPPER ALLOY AND NICKEL ALLOY. 1 specification is 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.