NSN 4820-01-416-7844 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-416-7844. Manufacturer of record part number: FP VG 1549-45.
Media for Which Designed: WATER, FRESH SINGLE RESPONSE
Valve Operation Method: AUTOMATIC
1 manufacturer part number on file
Manufacturer of record: The Hiller Companies Llc
Identification
NSN: 4820-01-416-7844
NIIN: 014167844
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: FP VG 1549-45
Manufacturer: The Hiller Companies Llc
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-416-7844, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Hiller Companies Llc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 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 4820-01-416-7844?
NSN 4820-01-416-7844 is a Valve,safety Relief, manufactured by The Hiller Companies Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-416-7844?
NSN 4820-01-416-7844 has 1 manufacturer part number on file: FP VG 1549-45 (The Hiller Companies Llc).
What are the specifications of FP VG 1549-45?
Key specifications for FP VG 1549-45: Flow Control Device: DISK; Disk Loading Method: SPRING; Special Features: VALVE SIZE 0.500IN. IN; Media for Which Designed: WATER, FRESH SINGLE RESPONSE. 4 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-416-7844 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.