PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

X-646Valve,safety Relief

Humphrey Products Co · NSN 4820-01-230-1929 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-230-1929 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-230-1929. Primary manufacturer part number: X-646.
Features
  • Valve,safety Relief — FSC 4820
  • 10 verified cross-references
  • Primary manufacturer: Humphrey Products Co
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-230-1929, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Humphrey Products Co. This item has 10 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameValve,safety Relief
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersDavey Compressor Co Div of Keco Industries Inc (CAGE 16004); Jenny Products, Inc (CAGE 29215); Humphrey Products Co (CAGE 24522); Drs Environmental Systems Inc (CAGE 5RQL2)
Technical Specifications
ParameterValue
NSN4820-01-230-1929
Primary Part NumberX-646
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHumphrey Products Co
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5305-00-307-2363CS3728 INTERCHANGEABLE
Screw,cap,hexagon Head
Lamson and Sessions Co the
4820-01-215-240128877N ITEM 27 INTERCHANGEABLE
Guide,valve Stem
Leslie Controls, Inc. Dba Leslie Controls Inc
5360-01-419-29726738400 INTERCHANGEABLE
Spring,helical,compression
Alfa Laval Inc
5975-01-529-012767384 INTERCHANGEABLE
Rack,electrical Equipment
Rose Electronics
Cross-Reference Index
Part NumberManufacturer
86428 Davey Compressor Co Div of Keco Industries Inc (USA)
86428 Jenny Products, Inc (USA)
X-646 PRIMARY Humphrey Products Co (USA)
67384 Jenny Products, Inc (USA)
A86428 Jenny Products, Inc (USA)
A86428 Davey Compressor Co Div of Keco Industries Inc (USA)
A67384 Drs Environmental Systems Inc (USA)
X646 W/80D B0TT Humphrey Products Co (USA)
67384 Drs Environmental Systems Inc (USA)
X646 W/80D BOTTOM DIAPHRAGM Humphrey Products Co (USA)
Related Parts
5305-00-307-2363INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
CS3728
4820-01-215-2401INTERCHANGEABLE
GUIDE,VALVE STEM
28877N ITEM 27
5360-01-419-2972INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6738400
5975-01-529-0127INTERCHANGEABLE
RACK,ELECTRICAL EQUIPMENT
67384

Frequently Asked Questions

What is NSN 4820-01-230-1929?

NSN 4820-01-230-1929 is a Valve,safety Relief, manufactured by Humphrey Products Co, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-230-1929?

NSN 4820-01-230-1929 has 10 cross-referenced part numbers: 86428 (Davey Compressor Co Div of Keco Industries Inc), 86428 (Jenny Products, Inc), X-646 (Humphrey Products Co), 67384 (Jenny Products, Inc), A86428 (Jenny Products, Inc) and 5 more.

What NSN replaces 4820-01-230-1929?

There are 4 known substitutes for 4820-01-230-1929: 5305-00-307-2363, 4820-01-215-2401, 5360-01-419-2972 and 1 more. Verify interchangeability with system specifications before substitution.

Is NSN 4820-01-230-1929 still in active supply?

NSN 4820-01-230-1929 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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