PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55Valve,angle

Precision Speed Manufacturing, Llc · NSN 4820-00-541-0361 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-541-0361 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-541-0361. Primary manufacturer part number: 55.
Features
  • Valve,angle — FSC 4820
  • Media for Which Designed: STEAM SECOND RESPONSE
  • Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS
  • Bonnet Attachment Method: UNION
  • Material: STEEL FLOW CONTROL DEVICE
  • Material Document and Classification: QQ-C-390,ALLOYD4/4/ FED SPEC SINGLE MATERIAL RESPONSE BODY
  • Maximum Operating Temp: 425.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Thread Direction: RIGHT-HAND ALL ENDS
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Flow Control Device construction
General Description

The Valve,angle, cataloged under National Stock Number 4820-00-541-0361, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Precision Speed Manufacturing, Llc. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-541-0361
Primary Part Number55
Item NameValve,angle
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerPrecision Speed Manufacturing, Llc
StatusCANCELLED
Media for Which DesignedSTEAM SECOND RESPONSE
Connection StylePLAIN,OPTIONAL END(PIPE) ALL ENDS
Bonnet Attachment MethodUNION
MaterialSTEEL FLOW CONTROL DEVICE
Material Document and ClassificationQQ-C-390,ALLOYD4/4/ FED SPEC SINGLE MATERIAL RESPONSE BODY
Maximum Operating Temp425.0 FAHRENHEIT SINGLE RESPONSE DEGF
Thread DirectionRIGHT-HAND ALL ENDS
MaterialCOPPER ALLOY 922 BODY
Nominal Thread Size0.750 INCHES ALL ENDS IN
Thread Series DesignatorNPT ALL ENDS
Specification/standard Data59646-MSS SP-80 MANUFACTURERS STANDARD
Operating Pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Valve Operation MethodMANUAL
Media for Which DesignedWATER, FRESH THIRD RESPONSE
MaterialCOPPER ALLOY STEM
Style DesignatorANGLE
Material Document and ClassificationASTMA276 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MaterialCOPPER ALLOY SEAT
Thread Quantity Per Inch14 ALL ENDS
Flow Control DeviceDISK
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Renewable Seat Ring TypeTHREADED
Nondefinitive Spec/std Data1 TYPE AND 150 CLASS AND 0.750 SIZE
Bonnet TypeINSIDE SCREW
Media for Which DesignedAIR FIRST RESPONSE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-266-9488 INTERCHANGEABLE
Valve,angle
4820-00-276-8953 INTERCHANGEABLE
Valve,angle
4820-00-541-0362 INTERCHANGEABLE
Valve,angle
4820-00-541-0363MSS SP-80 TYP3,CL 300,SZ 1/4IN INTERCHANGEABLE
Valve,globe
Manufacturers Standardization Society of the Valve and Fittings Industry Inc
4820-00-541-0366TY1,CL300,SZ1.5IN INTERCHANGEABLE
Valve,angle
Manufacturers Standardization Society of the Valve and Fittings Industry Inc
4820-00-541-0367 INTERCHANGEABLE
Valve,angle
4820-00-541-0368 INTERCHANGEABLE
Valve,angle
4820-00-541-0369 INTERCHANGEABLE
Valve,globe
4820-00-541-0370 INTERCHANGEABLE
Valve,globe
4820-00-541-0371TYPE 1/CLASS 300/SIZE 3/4 IN. INTERCHANGEABLE
Valve,globe
Manufacturers Standardization Society of the Valve and Fittings Industry Inc
Cross-Reference Index
Part NumberManufacturer
MSS SP-80 Manufacturers Standardization Society of the Valve and Fittings Industry Inc (USA)
MIL-V-1187B TYI Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILV1187 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
55 PRIMARY Precision Speed Manufacturing, Llc (USA)
Related Parts
4820-00-266-9488INTERCHANGEABLE
VALVE,ANGLE
4820-00-276-8953INTERCHANGEABLE
VALVE,ANGLE
4820-00-541-0362INTERCHANGEABLE
VALVE,ANGLE
4820-00-541-0363INTERCHANGEABLE
VALVE,GLOBE
MSS SP-80 TYP3,CL 300,SZ 1/4IN
4820-00-541-0366INTERCHANGEABLE
VALVE,ANGLE
TY1,CL300,SZ1.5IN
4820-00-541-0367INTERCHANGEABLE
VALVE,ANGLE
4820-00-541-0368INTERCHANGEABLE
VALVE,ANGLE
4820-00-541-0369INTERCHANGEABLE
VALVE,GLOBE
4820-00-541-0370INTERCHANGEABLE
VALVE,GLOBE
4820-00-541-0371INTERCHANGEABLE
VALVE,GLOBE
TYPE 1/CLASS 300/SIZE 3/4 IN.
4820-00-541-0372INTERCHANGEABLE
VALVE,GLOBE
4820-00-541-0373INTERCHANGEABLE
VALVE,GLOBE

Frequently Asked Questions

What is NSN 4820-00-541-0361?

NSN 4820-00-541-0361 is a Valve,angle, manufactured by Precision Speed Manufacturing, Llc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-541-0361?

NSN 4820-00-541-0361 has 4 cross-referenced part numbers: MSS SP-80 (Manufacturers Standardization Society of the Valve and Fittings Industry Inc), MIL-V-1187B TYI (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILV1187 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 55 (Precision Speed Manufacturing, Llc).

What NSN replaces 4820-00-541-0361?

There are 12 known substitutes for 4820-00-541-0361: 4820-00-266-9488, 4820-00-276-8953, 4820-00-541-0362 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 55?

Key specifications for 55: Media for Which Designed: STEAM SECOND RESPONSE; Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS; Bonnet Attachment Method: UNION; Material: STEEL FLOW CONTROL DEVICE. 26 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-541-0361 still in active supply?

NSN 4820-00-541-0361 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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