PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S214Valve,safety Relief

Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit · NSN 4820-00-726-9057 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-726-9057 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-726-9057. Primary manufacturer part number: S214.
Features
  • Valve,safety Relief — FSC 4820
  • Connection Type: THREADED INTERNAL BOSS FIRST END
  • Thread Class: 3B SECOND END
  • Thread Class: 3B FIRST END
  • Thread Quantity Per Inch: 16 FIRST END
  • Thread Series Designator: UNF SECOND END
  • Disk Loading Method: SPRING
  • Style Designator: ANGLE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Aluminum Alloy Body construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-726-9057, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-726-9057
Primary Part NumberS214
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTeledyne Industries Inc Teledyne Fluid Systems Republic Business Unit
StatusACTIVE
Connection TypeTHREADED INTERNAL BOSS FIRST END
Thread Class3B SECOND END
Thread Class3B FIRST END
Thread Quantity Per Inch16 FIRST END
Thread Series DesignatorUNF SECOND END
Disk Loading MethodSPRING
Style DesignatorANGLE
Opening Pressure Setting2500.0 POUNDS PER SQUARE INCH LBS
Operating Pressure5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Nominal Thread Size0.750 INCHES FIRST END IN
MaterialALUMINUM ALLOY BODY
Media for Which DesignedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
Thread Series DesignatorUNF FIRST END
Surface TreatmentANODIZE LOCATION NOT OTHERWISE SPECIFIED
Thread Quantity Per Inch20 SECOND END
Connection TypeTHREADED INTERNAL BOSS SECOND END
Connection StyleGASKET SEAL(BOSS) SECOND END
Thread DirectionRIGHT-HAND FIRST END
Thread DirectionRIGHT-HAND SECOND END
Nominal Thread Size0.438 INCHES SECOND END IN
Features ProvidedPRESSURE TIGHT OUTLET SIDE
Valve Operation MethodAUTOMATIC
Adjustable Pressure Range+2500.0 TO 5000.0 POUNDS PER SQUARE INCH LBS
Flow Control DevicePISTON
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
9540-00-227-8841 INTERCHANGEABLE
Angle,structural
5999-00-400-30991176 INTERCHANGEABLE
Delay Line
Neurotech Corp Control Electronics Div
5306-00-426-29470S0214 INTERCHANGEABLE
Bolt,machine
Caterpillar Inc Div Caterpillar Defense
4730-00-541-0991753231 INTERCHANGEABLE
Nut,tube Coupling
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4820-00-896-466775318-61 INTERCHANGEABLE
Valve,safety Relief
Curtiss-Wright Flow Control Corporation Dba Sprague Products Div Curtiss-Wright Flow Controls
4730-01-289-1537 INTERCHANGEABLE
Adapter,straight,pipe to Hose
5998-01-312-0583138C909H01 INTERCHANGEABLE
Retainer-Ejector,electrical Card
Northrop Grumman Support Services Corp
1730-01-419-6604 INTERCHANGEABLE
Pin,warning Streamer
Cross-Reference Index
Part NumberManufacturer
S214 Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA)
75323-1 Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA)
Related Parts
9540-00-227-8841INTERCHANGEABLE
ANGLE,STRUCTURAL
5999-00-400-3099INTERCHANGEABLE
DELAY LINE
1176
5306-00-426-2947INTERCHANGEABLE
BOLT,MACHINE
0S0214
4730-00-541-0991INTERCHANGEABLE
NUT,TUBE COUPLING
753231
4820-00-896-4667INTERCHANGEABLE
VALVE,SAFETY RELIEF
75318-61
4730-01-289-1537INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
5998-01-312-0583INTERCHANGEABLE
RETAINER-EJECTOR,ELECTRICAL CARD
138C909H01
1730-01-419-6604INTERCHANGEABLE
PIN,WARNING STREAMER

Frequently Asked Questions

What is NSN 4820-00-726-9057?

NSN 4820-00-726-9057 is a Valve,safety Relief, manufactured by Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-726-9057?

NSN 4820-00-726-9057 has 2 cross-referenced part numbers: S214 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit), 75323-1 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit).

What NSN replaces 4820-00-726-9057?

There are 8 known substitutes for 4820-00-726-9057: 9540-00-227-8841, 5999-00-400-3099, 5306-00-426-2947 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S214?

Key specifications for S214: Connection Type: THREADED INTERNAL BOSS FIRST END; Thread Class: 3B SECOND END; Thread Class: 3B FIRST END; Thread Quantity Per Inch: 16 FIRST END. 24 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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