The Valve,check, cataloged under National Stock Number 4820-01-435-7334, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Circor Pumps North America Llc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve,check |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Circor Pumps North America Llc (CAGE 59180) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-435-7334 |
| Primary Part Number | PP094AA |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| PP094AA PRIMARY | Circor Pumps North America Llc (USA) |
| SF10996 IT56 | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| 6Z-C4L-1-SS | C/1 Advisory reference — outside the item-of-supply concept Parker-Hannifin Corp Div Instrumentation Products Division |
| 6Z-C4L-1-SS | 5/9 Secondary reference Parker-Hannifin Corporation Div Instrumentation Products Division |
| SF10996 | D/9 Drawing number reference only Circor Pumps North America Llc |
NSN 4820-01-435-7334 is a Valve,check, manufactured by Circor Pumps North America Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-435-7334 has 2 manufacturer part numbers on file: PP094AA (Circor Pumps North America Llc), SF10996 IT56 (Circor Pumps North America Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-435-7343. Verify interchangeability with system specifications before substitution.
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.