PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1A-1/2IN35T59PSIValve,safety Relief

Anderson Greenwood Lp Dba Anderson Greenwood Crosby · NSN 4820-00-288-7304 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-288-7304 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-288-7304. Primary manufacturer part number: 1A-1/2IN35T59PSI.
Features
  • Valve,safety Relief — FSC 4820
  • Connection Type: THREADED EXTERNAL PIPE ALL ENDS
  • Thread Direction: RIGHT-HAND ALL ENDS
  • Valve Operation Method: AUTOMATIC OR MANUAL
  • Connection Style: PLAIN (PIPE) ALL ENDS
  • Adjustable Pressure Range: +35.0 TO 59.0 POUNDS PER SQUARE INCH LBS
  • Disk Loading Method: SPRING
  • Media for Which Designed: GAS, NATURAL SECOND RESPONSE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Overall construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-288-7304, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-288-7304
Primary Part Number1A-1/2IN35T59PSI
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAnderson Greenwood Lp Dba Anderson Greenwood Crosby
StatusCANCELLED
Connection TypeTHREADED EXTERNAL PIPE ALL ENDS
Thread DirectionRIGHT-HAND ALL ENDS
Valve Operation MethodAUTOMATIC OR MANUAL
Connection StylePLAIN (PIPE) ALL ENDS
Adjustable Pressure Range+35.0 TO 59.0 POUNDS PER SQUARE INCH LBS
Disk Loading MethodSPRING
Media for Which DesignedGAS, NATURAL SECOND RESPONSE
Style DesignatorANGLE
Thread Series DesignatorNPT ALL ENDS
Nominal Thread Size0.500 INCHES ALL ENDS IN
MaterialCOPPER ALLOY OVERALL
Media for Which DesignedAIR FIRST RESPONSE
Furnished Items and Quantity1 CAP AND 1 CHAIN
Operating Pressure250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Opening Pressure Setting50.0 POUNDS PER SQUARE INCH LBS
Features ProvidedVALVE STEM LOCK SHIELD
Maximum Operating Temp350.0 FAHRENHEIT SINGLE RESPONSE DEGF
Valve Discharge Flow Rate97.0 CUBIC FEET PER MINUTE
Flow Control DevicePOPPET
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5110-00-180-0923 INTERCHANGEABLE
Punch,cutting,double Bow
5915-00-501-4124NF10524-5 INTERCHANGEABLE
Filter,radio Frequency Interfere
Cornell-Dubilier Marketing Inc
5950-01-418-3324M733 INTERCHANGEABLE
Reactor
Payne Magnetics, Inc.
Cross-Reference Index
Part NumberManufacturer
X1396T3-50 Ingersoll Rand Co (USA)
X1396T3-50 Dresser-Rand Co Ingersoll-Rand Opns a Joint Venture (USA)
1P460 Ingersoll Rand Co (USA)
1P460 Ingersoll-Rand Co Proto Tool Div Tool Group Headquarters (USA)
1A-1/2IN35T59PSI PRIMARY Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
X1396T3-50 PRIMARY Ingersoll-Rand Company Dba Rotary Compressor Division (USA)
FIG 105C1/2 50PSI F.c.kingston Co. Dba Storm Manufacturing (USA)
149-1-2 PRIMARY Jayco Incorporated (USA)
FIGURE 1A-1/2-50PSI PRIMARY Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
Related Parts
5110-00-180-0923INTERCHANGEABLE
PUNCH,CUTTING,DOUBLE BOW
5915-00-501-4124INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
NF10524-5
5950-01-418-3324INTERCHANGEABLE
REACTOR
M733

Frequently Asked Questions

What is NSN 4820-00-288-7304?

NSN 4820-00-288-7304 is a Valve,safety Relief, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-288-7304?

NSN 4820-00-288-7304 has 9 cross-referenced part numbers: X1396T3-50 (Ingersoll Rand Co), X1396T3-50 (Dresser-Rand Co Ingersoll-Rand Opns a Joint Venture), 1P460 (Ingersoll Rand Co), 1P460 (Ingersoll-Rand Co Proto Tool Div Tool Group Headquarters), 1A-1/2IN35T59PSI (Anderson Greenwood Lp Dba Anderson Greenwood Crosby) and 4 more.

What NSN replaces 4820-00-288-7304?

There are 3 known substitutes for 4820-00-288-7304: 5110-00-180-0923, 5915-00-501-4124, 5950-01-418-3324. Verify interchangeability with system specifications before substitution.

What are the specifications of 1A-1/2IN35T59PSI?

Key specifications for 1A-1/2IN35T59PSI: Connection Type: THREADED EXTERNAL PIPE ALL ENDS; Thread Direction: RIGHT-HAND ALL ENDS; Valve Operation Method: AUTOMATIC OR MANUAL; Connection Style: PLAIN (PIPE) ALL ENDS. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-288-7304 still in active supply?

NSN 4820-00-288-7304 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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