PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

679812Valve,safety Relief

Facet (oklahoma) Llc · NSN 4820-01-232-2487 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-232-2487 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-232-2487. Primary manufacturer part number: 679812.
Features
  • Valve,safety Relief — FSC 4820
  • Nominal Thread Size: 0.500 INCHES SECOND END IN
  • Maximum Operating Temp: 500.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Media for Which Designed: AIR SINGLE RESPONSE
  • Flow Control Device: PISTON
  • Connection Type: THREADED INTERNAL PIPE ALL ENDS
  • Material: STEEL CORROSION RESISTING OVERALL
  • Furnished Items and Quantity: 1 FLOAT AND 1 LEVER
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-232-2487, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Facet (oklahoma) Llc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-01-232-2487
Primary Part Number679812
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerFacet (oklahoma) Llc
StatusCANCELLED
Nominal Thread Size0.500 INCHES SECOND END IN
Maximum Operating Temp500.0 FAHRENHEIT SINGLE RESPONSE DEGF
Media for Which DesignedAIR SINGLE RESPONSE
Flow Control DevicePISTON
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
MaterialSTEEL CORROSION RESISTING OVERALL
Furnished Items and Quantity1 FLOAT AND 1 LEVER
Nominal Thread Size0.750 INCHES FIRST END IN
Valve Operation MethodAUTOMATIC
Style DesignatorSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
Thread Series DesignatorNPT ALL ENDS
Thread DirectionRIGHT-HAND ALL ENDS
Connection StylePLAIN,OPTIONAL END(PIPE) ALL ENDS
Operating Pressure175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5340-00-528-450540158 INTERCHANGEABLE
Spring
Trw Inc Trw Commercial Steering Div
5330-00-842-8275648697 INTERCHANGEABLE
Gasket
Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division
5950-01-135-12805347545 INTERCHANGEABLE
Transformer,power
Naval Sea Systems Command
5999-01-371-555240173 INTERCHANGEABLE
Shielding Gasket,electronic
Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit
4140-01-435-2590 INTERCHANGEABLE
Fan,centrifugal
4820-01-642-1569D501062 INTERCHANGEABLE
Valve,vent
Armstrong International Inc Dba Armstrong Machine Works
4820-01-682-529540173-811 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
40173 P. W. Adamson Ltd (GBR)
11AV-1/8 RW T-316 VS Armstrong International Inc Dba Armstrong Machine Works (USA)
3008S08V-Z Bivco Valve Co (USA)
11AV Armstrong International Inc Dba Armstrong Machine Works (USA)
11-AV-6 SAS Avifil (FRA)
006789 Sei Industries Ltd (CAN)
11AV Plastifab Incorporated (USA)
11-AV Facet (oklahoma) Llc (USA)
A11982 Elliott Machine Works Inc (USA)
11AV-1/8 T-316 VS Armstrong International Inc Dba Armstrong Machine Works (USA)
11-AV/-1/8 Armstrong International Inc Dba Armstrong Machine Works (USA)
679812 PRIMARY Facet (oklahoma) Llc (USA)
3008S08V-ZVM Naval Inventory Control Point Mechanicsburg (USA)
11AV-1/8T-304SS Armstrong International Inc Dba Armstrong Machine Works (USA)
11AV Armstrong Flow Control Pty Ltd (AUS)
Related Parts
5340-00-528-4505INTERCHANGEABLE
SPRING
40158
5330-00-842-8275INTERCHANGEABLE
GASKET
648697
5950-01-135-1280INTERCHANGEABLE
TRANSFORMER,POWER
5347545
5999-01-371-5552INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
40173
4140-01-435-2590INTERCHANGEABLE
FAN,CENTRIFUGAL
4820-01-642-1569INTERCHANGEABLE
VALVE,VENT
D501062
4820-01-682-5295INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40173-811

Frequently Asked Questions

What is NSN 4820-01-232-2487?

NSN 4820-01-232-2487 is a Valve,safety Relief, manufactured by Facet (oklahoma) Llc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-232-2487?

NSN 4820-01-232-2487 has 15 cross-referenced part numbers: 40173 (P. W. Adamson Ltd), 11AV-1/8 RW T-316 VS (Armstrong International Inc Dba Armstrong Machine Works), 3008S08V-Z (Bivco Valve Co), 11AV (Armstrong International Inc Dba Armstrong Machine Works), 11-AV-6 (SAS Avifil) and 10 more.

What NSN replaces 4820-01-232-2487?

There are 7 known substitutes for 4820-01-232-2487: 5340-00-528-4505, 5330-00-842-8275, 5950-01-135-1280 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 679812?

Key specifications for 679812: Nominal Thread Size: 0.500 INCHES SECOND END IN; Maximum Operating Temp: 500.0 FAHRENHEIT SINGLE RESPONSE DEGF; Media for Which Designed: AIR SINGLE RESPONSE; Flow Control Device: PISTON. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-232-2487 still in active supply?

NSN 4820-01-232-2487 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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