PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21777Valve,regulating,fluid Pressure

Electro Impulse Laboratory Inc Dba Electro Impulse Inc · NSN 4820-01-123-5598 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-123-5598 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-123-5598. Primary manufacturer part number: 21777.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Electro Impulse Laboratory Inc Dba Electro Impulse Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-123-5598, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Electro Impulse Laboratory Inc Dba Electro Impulse Inc. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersElectro Impulse Laboratory Inc Dba Electro Impulse Inc (CAGE 91161)
Technical Specifications
ParameterValue
NSN4820-01-123-5598
Primary Part Number21777
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerElectro Impulse Laboratory Inc Dba Electro Impulse Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5330-00-286-0651A316 INTERCHANGEABLE
Gasket
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5905-00-335-7878 INTERCHANGEABLE
Resistor,fixed,wire Wound
5935-00-426-8406G350264S1 INTERCHANGEABLE
Cover,electrical Connector
L3harris Technologies, Inc Div Space & Airborne Systems
4330-00-443-1680426515 INTERCHANGEABLE
Filter,light
Simmonds Precision Products Inc
5945-00-865-4178 INTERCHANGEABLE
Relay,electromagnetic
4810-01-049-251121777 INTERCHANGEABLE
Disk,valve
Eaton Aerospace Llc
5962-01-157-9901932883-626 INTERCHANGEABLE
Microcircuit,memory
Raytheon Company Dba Raytheon
4030-01-194-2596 INTERCHANGEABLE
Swivel Chain
5330-01-266-3184 INTERCHANGEABLE
Gasket Set
5945-01-382-6103910-4X INTERCHANGEABLE
Relay,solid State
Te Connectivity Corporation
Cross-Reference Index
Part NumberManufacturer
21777 PRIMARY Electro Impulse Laboratory Inc Dba Electro Impulse Inc (USA)
19121 Electro Impulse Laboratory Inc Dba Electro Impulse Inc (USA)
Related Parts
5330-00-286-0651INTERCHANGEABLE
GASKET
A316
5905-00-335-7878INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
5935-00-426-8406INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
G350264S1
4330-00-443-1680INTERCHANGEABLE
FILTER,LIGHT
426515
5945-00-865-4178INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
4810-01-049-2511INTERCHANGEABLE
DISK,VALVE
21777
5962-01-157-9901INTERCHANGEABLE
MICROCIRCUIT,MEMORY
932883-626
4030-01-194-2596INTERCHANGEABLE
SWIVEL CHAIN
5330-01-266-3184INTERCHANGEABLE
GASKET SET
5945-01-382-6103INTERCHANGEABLE
RELAY,SOLID STATE
910-4X
3433-01-589-5814INTERCHANGEABLE
TORCH OUTFIT,WELDING
21777

Frequently Asked Questions

What is NSN 4820-01-123-5598?

NSN 4820-01-123-5598 is a Valve,regulating,fluid Pressure, manufactured by Electro Impulse Laboratory Inc Dba Electro Impulse Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-123-5598?

NSN 4820-01-123-5598 has 2 cross-referenced part numbers: 21777 (Electro Impulse Laboratory Inc Dba Electro Impulse Inc), 19121 (Electro Impulse Laboratory Inc Dba Electro Impulse Inc).

What NSN replaces 4820-01-123-5598?

There are 11 known substitutes for 4820-01-123-5598: 5330-00-286-0651, 5905-00-335-7878, 5935-00-426-8406 and 8 more. Verify interchangeability with system specifications before substitution.

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