PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8-590Valve,regulating,fluid Pressure

Matheson Co Div of G D Searle Medical Products · NSN 4820-00-067-6026 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-067-6026 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-067-6026. Primary manufacturer part number: 8-590.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • Valve Loading Method: SPRING
  • First End Style Designator: PLAIN
  • Valve Stem Design: SINGLE SEAT
  • Filter: NOT INCLUDED
  • Body Style: STRAIGHT THRU
  • Thread Size and Series/type Designator: 1/4-18 NPT FIRST END
  • End Connection Quantity: 2
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Brass Seat construction
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-067-6026, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Matheson Co Div of G D Searle Medical Products. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-067-6026
Primary Part Number8-590
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMatheson Co Div of G D Searle Medical Products
StatusACTIVE
Valve Loading MethodSPRING
First End Style DesignatorPLAIN
Valve Stem DesignSINGLE SEAT
FilterNOT INCLUDED
Body StyleSTRAIGHT THRU
Thread Size and Series/type Designator1/4-18 NPT FIRST END
End Connection Quantity2
MaterialBRASS SEAT
Flow Control DevicePOPPET
Media for Which DesignedAIR
Second End Relationship with First EndIDENTICAL
Regulation TypeAUTOMATIC SINGLE STAGE
MaterialCOPPER ALLOY STEM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5960-00-106-2121 INTERCHANGEABLE
Electron Tube
5360-00-224-8188PM74 INTERCHANGEABLE
Spring,helical,extension
Wisconsin Motors, Llc
5999-00-295-46021321-516 INTERCHANGEABLE
Contact,electrical
Eaton Corp Opns & Technical Center
3530-00-390-45578590 INTERCHANGEABLE
Wire,threading
Singer Industrial Sewing Products Co Cutters Exchange Div
1660-00-592-54968590-00 INTERCHANGEABLE
Bracket Assy,cylind
Avox Systems Inc Dba Avox Systems Inc
5330-00-740-2880 INTERCHANGEABLE
Gasket
3030-01-217-26484115248 INTERCHANGEABLE
Belt,v
Chrysler Realty Company Llc Dba Daimler Chrysler
5945-01-232-60508-590 INTERCHANGEABLE
Relay,electromagnetic
Fireye Inc
5940-01-448-0487115116.07 INTERCHANGEABLE
Terminal Junction Block,sectiona
Gec Alsthom Intl Inc Entrelec Div
6515-01-565-6161FE572K INTERCHANGEABLE
Forceps,applying,aneurysm Clip
Aesculap, Inc
Cross-Reference Index
Part NumberManufacturer
8-590 PRIMARY Matheson Co Div of G D Searle Medical Products (USA)
Q72178-1 Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems (USA)
Q72178-1 Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div (USA)
Related Parts
5960-00-106-2121INTERCHANGEABLE
ELECTRON TUBE
5360-00-224-8188INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
PM74
5999-00-295-4602INTERCHANGEABLE
CONTACT,ELECTRICAL
1321-516
3530-00-390-4557INTERCHANGEABLE
WIRE,THREADING
8590
1660-00-592-5496INTERCHANGEABLE
BRACKET ASSY,CYLIND
8590-00
5330-00-740-2880INTERCHANGEABLE
GASKET
3030-01-217-2648INTERCHANGEABLE
BELT,V
4115248
5945-01-232-6050INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
8-590
5940-01-448-0487INTERCHANGEABLE
TERMINAL JUNCTION BLOCK,SECTIONA
115116.07
6515-01-565-6161INTERCHANGEABLE
FORCEPS,APPLYING,ANEURYSM CLIP
FE572K

Frequently Asked Questions

What is NSN 4820-00-067-6026?

NSN 4820-00-067-6026 is a Valve,regulating,fluid Pressure, manufactured by Matheson Co Div of G D Searle Medical Products, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-067-6026?

NSN 4820-00-067-6026 has 3 cross-referenced part numbers: 8-590 (Matheson Co Div of G D Searle Medical Products), Q72178-1 (Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems), Q72178-1 (Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div).

What NSN replaces 4820-00-067-6026?

There are 10 known substitutes for 4820-00-067-6026: 5960-00-106-2121, 5360-00-224-8188, 5999-00-295-4602 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8-590?

Key specifications for 8-590: Valve Loading Method: SPRING; First End Style Designator: PLAIN; Valve Stem Design: SINGLE SEAT; Filter: NOT INCLUDED. 13 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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