PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8424Valve,regulating,fluid Pressure

Boc Group Inc the · NSN 4820-00-281-8194 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-281-8194 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-281-8194. Primary manufacturer part number: 8424.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • First End Style Designator: SWIVEL NUT, GAS
  • Body Style: ANGLE
  • First End Connection Type: THREADED INTERNAL GAS CYLINDER
  • Media for Which Designed: NITROGEN, GASEOUS
  • End Connection Quantity: 2
  • Remote Actuation Method: DIAPHRAGM
  • Second End Thread Class: 3B
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 4820-00-281-8194, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Boc Group Inc the. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-281-8194
Primary Part Number8424
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerBoc Group Inc the
StatusCANCELLED
First End Style DesignatorSWIVEL NUT, GAS
Body StyleANGLE
First End Connection TypeTHREADED INTERNAL GAS CYLINDER
Media for Which DesignedNITROGEN, GASEOUS
End Connection Quantity2
Remote Actuation MethodDIAPHRAGM
Second End Thread Class3B
Flow Control DeviceDISK, FLAT, TOP AND BOTTOM GUIDED OR DIAPHRAGM
Second End Relationship with First EndNOT IDENTICAL
Valve Loading MethodSPRING
Maximum Inlet Pressure RatingERR-060
Valve Stem DesignSINGLE SEAT
First End Thread DirectionLEFT-HAND
FilterINCLUDED
Temp Rating-40.0 FAHRENHEIT MINIMUM AND 165.0 FAHRENHEIT MINIMUM DEGF
Second End Connection TypeTHREADED INTERNAL BOSS
Second End Thread DirectionRIGHT-HAND
Manual Control MethodTEE HANDLE
Renewable Seat Ring TypePRESSED-IN
MaterialBRASS SEAT
Outlet Pressure Range0.0 TO 40.0 CAMERA MOUNT
Regulation Type1ST STAGE AUTOMATIC, 2ND STAGE MANUAL
Thread Size and Series/type Designator0.908-14 NGO FIRST END
Second End Style DesignatorGASKET SEAL
Furnished ItemsAUTOMATIC RELIEF VALVE AND INLET PRESSURE GAGE AND OUTLET PRESSURE GAGE
MaterialCOPPER ALLOY FLOW CONTROL DEVICE
Thread Size and Series/type Designator5/8-18 UNF SECOND END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2930-00-033-28068424 INTERCHANGEABLE
Pump,cooling System,engine
Elgin Industries Inc. Dba
5910-00-112-8321 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
6145-00-125-07418424 INTERCHANGEABLE
Cable,special Purpose,electrical
Belden Wire & Cable Company Llc Dba Belden Cdt Electronics Division
5975-00-132-9472 INTERCHANGEABLE
Conduit,metal,flexible
1075-00-383-8249 INTERCHANGEABLE
Retainer,bearing
5950-00-917-9435140788-02 INTERCHANGEABLE
Transformer,audio Frequency
Ge Aviation Systems Llc
4820-00-923-114684-24 INTERCHANGEABLE
Valve,bleeder,hydraulic System
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
6145-01-053-99018233 INTERCHANGEABLE
Cable,radio Frequency
Belden Wire & Cable Company Llc Dba Belden Cdt Electronics Division
3010-01-101-26338424 INTERCHANGEABLE
Housing
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
4820-01-179-54618424 INTERCHANGEABLE
Seat,valve
Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect
Cross-Reference Index
Part NumberManufacturer
806-8424 Messer Llc (USA)
806-8424 Airco Welding Products Div of the Boc Group Inc (USA)
8424 PRIMARY Boc Group Inc the (USA)
806-8424 Controls Corp of America (USA)
96-50-555 Lincoln Electric Co the Harris Calorific Div (USA)
VTS450B-555 PRIMARY Victor Equipment Co (USA)
70-5545Q PRIMARY National Torch Tip Co Inc Div of Archsmith Inc (USA)
806-8424 Boc Group Inc the (USA)
Related Parts
2930-00-033-2806INTERCHANGEABLE
PUMP,COOLING SYSTEM,ENGINE
8424
5910-00-112-8321INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
6145-00-125-0741INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
8424
5975-00-132-9472INTERCHANGEABLE
CONDUIT,METAL,FLEXIBLE
1075-00-383-8249INTERCHANGEABLE
RETAINER,BEARING
5950-00-917-9435INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
140788-02
4820-00-923-1146INTERCHANGEABLE
VALVE,BLEEDER,HYDRAULIC SYSTEM
84-24
6145-01-053-9901INTERCHANGEABLE
CABLE,RADIO FREQUENCY
8233
3010-01-101-2633INTERCHANGEABLE
HOUSING
8424
4820-01-179-5461INTERCHANGEABLE
SEAT,VALVE
8424
5975-01-183-5370INTERCHANGEABLE
COUPLING,ELECTRICAL CONDUIT
8424
5340-01-243-5384INTERCHANGEABLE
STANDOFF,THREADED,SPACING
NAS1831A4C10

Frequently Asked Questions

What is NSN 4820-00-281-8194?

NSN 4820-00-281-8194 is a Valve,regulating,fluid Pressure, manufactured by Boc Group Inc the, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-281-8194?

NSN 4820-00-281-8194 has 8 cross-referenced part numbers: 806-8424 (Messer Llc), 806-8424 (Airco Welding Products Div of the Boc Group Inc), 8424 (Boc Group Inc the), 806-8424 (Controls Corp of America), 96-50-555 (Lincoln Electric Co the Harris Calorific Div) and 3 more.

What NSN replaces 4820-00-281-8194?

There are 12 known substitutes for 4820-00-281-8194: 2930-00-033-2806, 5910-00-112-8321, 6145-00-125-0741 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8424?

Key specifications for 8424: First End Style Designator: SWIVEL NUT, GAS; Body Style: ANGLE; First End Connection Type: THREADED INTERNAL GAS CYLINDER; Media for Which Designed: NITROGEN, GASEOUS. 28 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-281-8194 still in active supply?

NSN 4820-00-281-8194 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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