PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1251 1/2Valve,angle

Crane Co Div Valve Div · NSN 4820-00-813-3359 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-813-3359 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-813-3359. Primary manufacturer part number: 1251 1/2.
Features
  • Valve,angle — FSC 4820
  • Maximum Operating Temp: 335.0 FAHRENHEIT FIRST RESPONSE DEGF
  • Media for Which Designed: OIL SECOND RESPONSE
  • Material: COPPER ALLOY STEM
  • Media for Which Designed: GAS, NATURAL THIRD RESPONSE
  • Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
  • Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM THIRD RESPONSE LBS
  • Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FOURTH RESPONSE LBS
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Stem construction
General Description

The Valve,angle, cataloged under National Stock Number 4820-00-813-3359, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Crane Co Div Valve Div. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-813-3359
Primary Part Number1251 1/2
Item NameValve,angle
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCrane Co Div Valve Div
StatusACTIVE
Maximum Operating Temp335.0 FAHRENHEIT FIRST RESPONSE DEGF
Media for Which DesignedOIL SECOND RESPONSE
MaterialCOPPER ALLOY STEM
Media for Which DesignedGAS, NATURAL THIRD RESPONSE
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM THIRD RESPONSE LBS
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FOURTH RESPONSE LBS
MaterialCOPPER ALLOY SEAT
Nominal Thread Size0.500 INCHES FIRST END IN
Maximum Operating Temp335.0 FAHRENHEIT THIRD RESPONSE DEGF
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Features ProvidedBONNET PACKING
Nominal Pipe Size Accommodated0.500 INCHES ALL ENDS IN
Bonnet Attachment MethodTHREADED
Maximum Operating Temp335.0 FAHRENHEIT SECOND RESPONSE DEGF
Thread Quantity Per Inch14 ALL ENDS
Valve Operation MethodMANUAL
Bonnet TypeINSIDE SCREW
Thread DirectionRIGHT-HAND ALL ENDS
Maximum Operating Temp335.0 FAHRENHEIT FOURTH RESPONSE DEGF
Flow Control DeviceDISK
Style DesignatorANGLE
Criticality Code JustificationFEAT
Connection StylePLAIN,OPTIONAL END(PIPE) ALL ENDS
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
MaterialCOPPER ALLOY BODY
Media for Which DesignedSTEAM FIRST RESPONSE
Thread Series DesignatorNPT ALL ENDS
MaterialCOPPER ALLOY FLOW CONTROL DEVICE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5310-00-012-511211646P11 INTERCHANGEABLE
Nut,plain,slotted,hexagon
Taylor Machine Works Inc
2915-00-091-4214 INTERCHANGEABLE
Seat,air,fuel
5305-00-286-1781125112 INTERCHANGEABLE
Screw,machine
Telemechanics Inc
1560-01-263-9831 INTERCHANGEABLE
Track,detail
5998-01-370-827441785001M INTERCHANGEABLE
Circuit Card Assembly
Elbitamerica, Inc.
Cross-Reference Index
Part NumberManufacturer
1251-1-2 Crane Co Div Valve Div (USA)
587344 Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA)
CPRX1.1-1/2IN Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA)
1251 1/2 PRIMARY Crane Co Div Valve Div (USA)
Related Parts
5310-00-012-5112INTERCHANGEABLE
NUT,PLAIN,SLOTTED,HEXAGON
11646P11
2915-00-091-4214INTERCHANGEABLE
SEAT,AIR,FUEL
5305-00-286-1781INTERCHANGEABLE
SCREW,MACHINE
125112
1560-01-263-9831INTERCHANGEABLE
TRACK,DETAIL
5998-01-370-8274INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
41785001M

Frequently Asked Questions

What is NSN 4820-00-813-3359?

NSN 4820-00-813-3359 is a Valve,angle, manufactured by Crane Co Div Valve Div, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-813-3359?

NSN 4820-00-813-3359 has 4 cross-referenced part numbers: 1251-1-2 (Crane Co Div Valve Div), 587344 (Army, United States Department of the Dba Rock Island Arsenal Jmtc), CPRX1.1-1/2IN (Army, United States Department of the Dba Rock Island Arsenal Jmtc), 1251 1/2 (Crane Co Div Valve Div).

What NSN replaces 4820-00-813-3359?

There are 5 known substitutes for 4820-00-813-3359: 5310-00-012-5112, 2915-00-091-4214, 5305-00-286-1781 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1251 1/2?

Key specifications for 1251 1/2: Maximum Operating Temp: 335.0 FAHRENHEIT FIRST RESPONSE DEGF; Media for Which Designed: OIL SECOND RESPONSE; Material: COPPER ALLOY STEM; Media for Which Designed: GAS, NATURAL THIRD RESPONSE. 30 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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