PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1028-5-3450Valve,safety Relief

Droitcour Co · NSN 4820-01-319-4330 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-319-4330 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-319-4330. Primary manufacturer part number: 1028-5-3450.
Features
  • Valve,safety Relief — FSC 4820
  • Valve Discharge Flow Rate: 10.0 GALLONS PER MINUTE
  • Valve Operation Method: AUTOMATIC
  • Disk Loading Method: SPRING
  • Opening Pressure Setting: 3450.0 POUNDS PER SQUARE INCH LBS
  • Material: STEEL COMP 416SE FLOW CONTROL DEVICE
  • Style Designator: DROP-IN CARTRIDGE
  • Material: STEEL COMP 440C SEAT
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 416SE Flow Control Device construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-319-4330, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Droitcour Co. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-319-4330
Primary Part Number1028-5-3450
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerDroitcour Co
StatusACTIVE
Valve Discharge Flow Rate10.0 GALLONS PER MINUTE
Valve Operation MethodAUTOMATIC
Disk Loading MethodSPRING
Opening Pressure Setting3450.0 POUNDS PER SQUARE INCH LBS
MaterialSTEEL COMP 416SE FLOW CONTROL DEVICE
Style DesignatorDROP-IN CARTRIDGE
MaterialSTEEL COMP 440C SEAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5961-00-022-5664 INTERCHANGEABLE
Semiconductor Device,diode
5950-00-412-961760965-1 INTERCHANGEABLE
Transformer,audio Frequency
L3harris Technologies, Inc.
2910-00-483-093810285 INTERCHANGEABLE
Hub,drive
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5950-01-024-4260 INTERCHANGEABLE
Coil,radio Frequency
4820-01-062-38391028-5-3400 INTERCHANGEABLE
Sleeve Assembly,valve
Droitcour Co
5985-01-084-66733147159-1 INTERCHANGEABLE
Waveguide Assembly
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5905-01-135-11091699-39-0 INTERCHANGEABLE
Resistor Network,fixed,film
Bi Technologies Corporation Div Bi Technologies Corp.
4810-01-192-83691028-5-3425 INTERCHANGEABLE
Slide,directional Control Linear
Droitcour Co
4820-01-213-80661028-5-2244 INTERCHANGEABLE
Slide,directional Control Linear
Droitcour Co
4820-01-258-68751028-5 1860PSI INTERCHANGEABLE
Valve,safety Relief
Droitcour Co
Cross-Reference Index
Part NumberManufacturer
1506 PIECE 2 P/N 1028-5-3450 Droitcour Co (USA)
1028-5-3450 PRIMARY Droitcour Co (USA)
1506 Droitcour Co (USA)
1028-5 Droitcour Co (USA)
Related Parts
5961-00-022-5664INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5950-00-412-9617INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
60965-1
2910-00-483-0938INTERCHANGEABLE
HUB,DRIVE
10285
5950-01-024-4260INTERCHANGEABLE
COIL,RADIO FREQUENCY
4820-01-062-3839INTERCHANGEABLE
SLEEVE ASSEMBLY,VALVE
1028-5-3400
5985-01-084-6673INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
3147159-1
5905-01-135-1109INTERCHANGEABLE
RESISTOR NETWORK,FIXED,FILM
1699-39-0
4810-01-192-8369INTERCHANGEABLE
SLIDE,DIRECTIONAL CONTROL LINEAR
1028-5-3425
4820-01-213-8066INTERCHANGEABLE
SLIDE,DIRECTIONAL CONTROL LINEAR
1028-5-2244
4820-01-258-6875INTERCHANGEABLE
VALVE,SAFETY RELIEF
1028-5 1860PSI
5310-01-502-7569INTERCHANGEABLE
WASHER,FLAT
10-285
6150-01-551-1266INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
10285

Frequently Asked Questions

What is NSN 4820-01-319-4330?

NSN 4820-01-319-4330 is a Valve,safety Relief, manufactured by Droitcour Co, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-319-4330?

NSN 4820-01-319-4330 has 4 cross-referenced part numbers: 1506 PIECE 2 P/N 1028-5-3450 (Droitcour Co), 1028-5-3450 (Droitcour Co), 1506 (Droitcour Co), 1028-5 (Droitcour Co).

What NSN replaces 4820-01-319-4330?

There are 12 known substitutes for 4820-01-319-4330: 5961-00-022-5664, 5950-00-412-9617, 2910-00-483-0938 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1028-5-3450?

Key specifications for 1028-5-3450: Valve Discharge Flow Rate: 10.0 GALLONS PER MINUTE; Valve Operation Method: AUTOMATIC; Disk Loading Method: SPRING; Opening Pressure Setting: 3450.0 POUNDS PER SQUARE INCH LBS. 7 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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