PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11255Valve,safety Relief

Eaton Aerospace Llc · NSN 4820-01-075-2822 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-075-2822 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-075-2822. Primary manufacturer part number: 11255.
Features
  • Valve,safety Relief — FSC 4820
  • Disk Loading Method: SPRING
  • Connection Type: FLANGE ALL ENDS
  • Operating Pressure: 3100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Maximum Operating Temp: 60.0 CELSIUS SINGLE RESPONSE DEGC
  • Flange Shape: ROUND ALL ENDS
  • Valve Operation Method: AUTOMATIC
  • Valve Discharge Flow Rate: 5.0 GALLONS PER MINUTE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-075-2822, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Eaton Aerospace Llc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-01-075-2822
Primary Part Number11255
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEaton Aerospace Llc
StatusCANCELLED
Disk Loading MethodSPRING
Connection TypeFLANGE ALL ENDS
Operating Pressure3100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Maximum Operating Temp60.0 CELSIUS SINGLE RESPONSE DEGC
Flange ShapeROUND ALL ENDS
Valve Operation MethodAUTOMATIC
Valve Discharge Flow Rate5.0 GALLONS PER MINUTE
Face to Face Distance3.750 INCHES IN
Nominal Outside Diameter1.125 INCHES ALL ENDS IN
Style DesignatorSTRAIGHT THRU FLANGED ENDS NOTE:TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5306-00-430-941511255 INTERCHANGEABLE
Bolt,shoulder
Komatsu America Corporation
6625-00-803-3798112-55 INTERCHANGEABLE
Voltmeter
Keysight Technologies Inc
5999-00-883-0585101-329 INTERCHANGEABLE
Clip,electrical
Atlee of Delaware, Incorporated
4320-00-995-1508 INTERCHANGEABLE
Rotor,blower
5133-01-055-670115073 INTERCHANGEABLE
Drill,twist
Morse Cutting Tools
5945-01-056-900111255 INTERCHANGEABLE
Solenoid Assembly
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
4820-01-534-720811255 INTERCHANGEABLE
Valve,check
Exceltec Intl Corp
4820-01-551-723211255 INTERCHANGEABLE
Valve,ball
Itw Food Equipment Group Llc Dba Gaylord Industries
Cross-Reference Index
Part NumberManufacturer
12265558 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
11255 PRIMARY Eaton Aerospace Llc (USA)
Related Parts
5306-00-430-9415INTERCHANGEABLE
BOLT,SHOULDER
11255
6625-00-803-3798INTERCHANGEABLE
VOLTMETER
112-55
5999-00-883-0585INTERCHANGEABLE
CLIP,ELECTRICAL
101-329
4320-00-995-1508INTERCHANGEABLE
ROTOR,BLOWER
5133-01-055-6701INTERCHANGEABLE
DRILL,TWIST
15073
5945-01-056-9001INTERCHANGEABLE
SOLENOID ASSEMBLY
11255
4820-01-534-7208INTERCHANGEABLE
VALVE,CHECK
11255
4820-01-551-7232INTERCHANGEABLE
VALVE,BALL
11255

Frequently Asked Questions

What is NSN 4820-01-075-2822?

NSN 4820-01-075-2822 is a Valve,safety Relief, manufactured by Eaton Aerospace Llc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-075-2822?

NSN 4820-01-075-2822 has 2 cross-referenced part numbers: 12265558 (U S Army Tank Automotive Command Amsta-Im-Mm), 11255 (Eaton Aerospace Llc).

What NSN replaces 4820-01-075-2822?

There are 8 known substitutes for 4820-01-075-2822: 5306-00-430-9415, 6625-00-803-3798, 5999-00-883-0585 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11255?

Key specifications for 11255: Disk Loading Method: SPRING; Connection Type: FLANGE ALL ENDS; Operating Pressure: 3100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 60.0 CELSIUS SINGLE RESPONSE DEGC. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-075-2822 still in active supply?

NSN 4820-01-075-2822 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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