PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18H-580Valve,regulating,fluid Pressure

Matheson Co Div of G D Searle Medical Products · NSN 4820-00-922-0085 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-922-0085 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-922-0085. Primary manufacturer part number: 18H-580.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • Thread Size and Series/type Designator: 0.960-14 NGO SECOND END
  • Thread Size and Series/type Designator: 1/4-18 NPT FIRST END
  • Surface Treatment: CHROMATE OUTSIDE
  • Media for Which Designed: ARGON OR HELIUM AND NITROGEN, GASEOUS
  • First End Style Designator: PLAIN
  • First End Connection Type: THREADED EXTERNAL PIPE
  • Furnished Items: ADAPTER AND OUTLET PRESSURE GAGE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Seat construction
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-922-0085, 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 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-922-0085
Primary Part Number18H-580
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMatheson Co Div of G D Searle Medical Products
StatusACTIVE
Thread Size and Series/type Designator0.960-14 NGO SECOND END
Thread Size and Series/type Designator1/4-18 NPT FIRST END
Surface TreatmentCHROMATE OUTSIDE
Media for Which DesignedARGON OR HELIUM AND NITROGEN, GASEOUS
First End Style DesignatorPLAIN
First End Connection TypeTHREADED EXTERNAL PIPE
Furnished ItemsADAPTER AND OUTLET PRESSURE GAGE
Second End Connection TypeTHREADED EXTERNAL GAS CYLINDER
Regulation TypeAUTOMATIC SINGLE STAGE
Body StyleANGLE
Second End Relationship with First EndNOT IDENTICAL
First End Thread DirectionRIGHT-HAND
Second End Style DesignatorSWIVEL NUT, FLARED
FilterNOT INCLUDED
Maximum Inlet Pressure RatingERR-060
Outlet Pressure Range0.0 TO 200.0 CAMERA MOUNT
Flow Control DeviceCONE AND DIAPHRAGM
End Connection Quantity2
MaterialSTEEL CORROSION RESISTING SEAT
Valve Loading MethodSPRING
Second End Thread DirectionRIGHT-HAND
Temp Rating-40.0 FAHRENHEIT MINIMUM AND 160.0 FAHRENHEIT MAXIMUM DEGF
Second End Thread Pitch Diameters+0.9100 TO 0.9136 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3040-00-230-147167A230C147 INTERCHANGEABLE
Hub,body
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
2920-00-358-76091271770 INTERCHANGEABLE
Ring
Chrysler Realty Company Llc Dba Daimler Chrysler
5945-00-554-93019887 INTERCHANGEABLE
Relay
Te Connectivity Corporation
6695-01-216-20929887 INTERCHANGEABLE
Transducer,motional Pickup
Custom Metering Company Inc
Cross-Reference Index
Part NumberManufacturer
9887 Modern Engineering Co Inc (USA)
GPS270D-580 Victor Equipment Co (USA)
18H-580 PRIMARY Matheson Co Div of G D Searle Medical Products (USA)
1H580 Matheson Co Div of G D Searle Medical Products (USA)
0784-0289 PRIMARY Victor Equipment Co (USA)
Related Parts
3040-00-230-1471INTERCHANGEABLE
HUB,BODY
67A230C147
2920-00-358-7609INTERCHANGEABLE
RING
1271770
5945-00-554-9301INTERCHANGEABLE
RELAY
9887
6695-01-216-2092INTERCHANGEABLE
TRANSDUCER,MOTIONAL PICKUP
9887

Frequently Asked Questions

What is NSN 4820-00-922-0085?

NSN 4820-00-922-0085 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 4820-00-922-0085?

NSN 4820-00-922-0085 has 5 cross-referenced part numbers: 9887 (Modern Engineering Co Inc), GPS270D-580 (Victor Equipment Co), 18H-580 (Matheson Co Div of G D Searle Medical Products), 1H580 (Matheson Co Div of G D Searle Medical Products), 0784-0289 (Victor Equipment Co).

What NSN replaces 4820-00-922-0085?

There are 4 known substitutes for 4820-00-922-0085: 3040-00-230-1471, 2920-00-358-7609, 5945-00-554-9301 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18H-580?

Key specifications for 18H-580: Thread Size and Series/type Designator: 0.960-14 NGO SECOND END; Thread Size and Series/type Designator: 1/4-18 NPT FIRST END; Surface Treatment: CHROMATE OUTSIDE; Media for Which Designed: ARGON OR HELIUM AND NITROGEN, GASEOUS. 23 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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