NSN 4820-01-564-2427 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-564-2427. Manufacturer of record part number: VRL6.
Also searched as4820-01-564-2427 ·
4820015642427 ·
NIIN 015642427 ·
01-564-2427 ·
FSC 4820 Valves, Nonpowered · CAGE 3KUW3 · VRL6
Style Designator: STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
Material: ALUMINUM ALLOY BODY
Thread Series Designator: NPT ALL ENDS
Valve Operation Method: AUTOMATIC
1 manufacturer part number on file
Manufacturer of record: Fpz, Inc.
Identification
NSN: 4820-01-564-2427
NIIN: 015642427
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: VRL6
Manufacturer: Fpz, Inc.
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-564-2427, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fpz, Inc.. Government technical data includes 5 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.
Technical Specifications
Parameter
Value
NSN
4820-01-564-2427
Primary Part Number
VRL6
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Fpz, Inc.
Status
ACTIVE
Connection Type
THREADED EXTERNAL PIPE ALL ENDS
Style Designator
STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
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 4820-01-564-2427?
NSN 4820-01-564-2427 is a Valve,safety Relief, manufactured by Fpz, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-564-2427?
NSN 4820-01-564-2427 has 1 manufacturer part number on file: VRL6 (Fpz, Inc.).
What are the specifications of VRL6?
Key specifications for VRL6: Connection Type: THREADED EXTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.; Special Features: VRL VALVE DESIGNED TO PROTECT BLOWERS AND/OR MOTORS FROM OVER PRESSURIZATION OR EXCESS VACUUM; 2" NPT; End Item Identification: NEW CONSTRUCTION LCS2. 5 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-564-2427 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.