First End Style Designator: REDUCED SOCKET WITH ONE BRAZING RING
End Connection Quantity: 2
Identification
NSN: 4820-01-454-0788
NIIN: 014540788
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
General Description
The Valve,calibrated Flow, cataloged under National Stock Number 4820-01-454-0788, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-454-0788
Item Name
Valve,calibrated Flow
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Flow Control Device
DIAPHRAGM
Second End Relationship with First End
IDENTICAL
Body Style
STRAIGHT THRU
Face to Face Distance
6.000 INCHES NOMINAL IN
Regulation Type
AUTOMATIC SINGLE STAGE
First End Style Designator
REDUCED SOCKET WITH ONE BRAZING RING
End Connection Quantity
2
First End Connection Type
UNTHREADED INTERNAL PIPE
First End Nominal Pipe Size Accommodated
1.500 INCHES IN
Material
COPPER ALLOY BODY
Media for Which Designed
WATER
Maximum Inlet Pressure Rating
ERR-060
Valve Discharge Flow Rate
57.0 GALLONS PER MINUTE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
1683-B
D/9Drawing number reference only
U.S. Government activity
1683-B 57 GPM
5/2Secondary reference
U.S. Government activity
2352-1465A
C/1Advisory reference — outside the item-of-supply concept
U.S. Government activity
2352-1465
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 4820 — Valves, Nonpowered
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
Related Parts in Valves
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
8171E-1/4HS2
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
D559A3M2
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 4820-01-454-0788?
NSN 4820-01-454-0788 is a Valve,calibrated Flow, classified under FSC 4820, Valves, Nonpowered. Status: active.
What are the specifications of 4820-01-454-0788?
Key specifications for 4820-01-454-0788: Flow Control Device: DIAPHRAGM; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU; Face to Face Distance: 6.000 INCHES NOMINAL IN. 13 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-454-0788 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.