NSN 4820-01-581-6937 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-581-6937. Manufacturer of record part number: D-1599.
Also searched as4820-01-581-6937 ·
4820015816937 ·
NIIN 015816937 ·
01-581-6937 ·
FSC 4820 Valves, Nonpowered · CAGE 0L817 · D-1599
Manufacturer of record: Hydro Mechanical Systems Inc
Identification
NSN: 4820-01-581-6937
NIIN: 015816937
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: D-1599
Manufacturer: Hydro Mechanical Systems Inc
General Description
The Valve,check, cataloged under National Stock Number 4820-01-581-6937, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hydro Mechanical Systems Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
4820-00-001-0020
4820-00-001-0020 · Item name not on file
4820-00-001-0021
4820-00-001-0021 · Item name not on file
4820-00-001-0032
4820-00-001-0032 · Item name not on file
4820-00-001-0037
VALVE,SAFETY RELIEF
4820-00-001-0042
4820-00-001-0042 · Item name not on file
4820-00-001-1230
4820-00-001-1230 · Item name not on file
Frequently Asked Questions
What is NSN 4820-01-581-6937?
NSN 4820-01-581-6937 is a Valve,check, manufactured by Hydro Mechanical Systems Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-581-6937?
NSN 4820-01-581-6937 has 1 manufacturer part number on file: D-1599 (Hydro Mechanical Systems Inc).
What are the specifications of D-1599?
Key specifications for D-1599: Special Features: ADJUSTMENT RANGE 500 TO 3000 PSI; Part Name Assigned by Controlling Agency: CROSS PORT CARTRIDGE VALVE; End Item Identification: MODEL RDFA. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-581-6937 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.