PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TY1,CL300,SZ1.5INValve,angle

Manufacturers Standardization Society of the Valve and Fittings Industry Inc · NSN 4820-00-541-0366 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-541-0366 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-541-0366. Primary manufacturer part number: TY1,CL300,SZ1.5IN.
Features
  • Valve,angle — FSC 4820
  • Media for Which Designed: AIR FIRST RESPONSE
  • Flow Control Device: DISK
  • Renewable Seat Ring Type: THREADED
  • Bonnet Type: INSIDE SCREW
  • Material Document and Classification: QQ-C-390,ALLOYD4/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY
  • Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS
  • Material: STEEL FLOW CONTROL DEVICE
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 4820-00-541-0366, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Manufacturers Standardization Society of the Valve and Fittings Industry Inc. 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
NSN4820-00-541-0366
Primary Part NumberTY1,CL300,SZ1.5IN
Item NameValve,angle
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerManufacturers Standardization Society of the Valve and Fittings Industry Inc
StatusCANCELLED
Media for Which DesignedAIR FIRST RESPONSE
Flow Control DeviceDISK
Renewable Seat Ring TypeTHREADED
Bonnet TypeINSIDE SCREW
Material Document and ClassificationQQ-C-390,ALLOYD4/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY
Connection StylePLAIN,OPTIONAL END(PIPE) ALL ENDS
MaterialSTEEL FLOW CONTROL DEVICE
Maximum Operating Temp425.0 FAHRENHEIT SINGLE RESPONSE DEGF
Valve Operation MethodMANUAL
Bonnet Attachment MethodUNION
Operating Pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Nondefinitive Spec/std Data1 TYPE AND 300PSI CLASS AND A END AND 1.500 SIZE
Nominal Thread Size1.500 INCHES ALL ENDS IN
MaterialCOPPER ALLOY 922 BODY
Material Document and ClassificationASTMA276 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
Style DesignatorANGLE
Media for Which DesignedWATER, SALT THIRD RESPONSE
MaterialCOPPER ALLOY STEM
Test Data Document81349-MIL-V-1187 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Material Document and ClassificationASTMA276 ASSN STD SINGLE MATERIAL RESPONSE SEAT
Media for Which DesignedSTEAM SECOND RESPONSE
MaterialSTEEL SEAT
Thread DirectionRIGHT-HAND ALL ENDS
Thread Series DesignatorNPT ALL ENDS
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-266-9488 INTERCHANGEABLE
Valve,angle
4820-00-276-8953 INTERCHANGEABLE
Valve,angle
4820-00-541-036155 INTERCHANGEABLE
Valve,angle
Precision Speed Manufacturing, Llc
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
4820-00-541-0367 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)
MILV1187 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
TY1,CL300,SZ1.5IN PRIMARY Manufacturers Standardization Society of the Valve and Fittings Industry Inc (USA)
0531 Fairbanks Co the (USA)
Related Parts
4820-00-266-9488INTERCHANGEABLE
VALVE,ANGLE
4820-00-276-8953INTERCHANGEABLE
VALVE,ANGLE
4820-00-541-0361INTERCHANGEABLE
VALVE,ANGLE
55
4820-00-541-0362INTERCHANGEABLE
VALVE,ANGLE
4820-00-541-0363INTERCHANGEABLE
VALVE,GLOBE
MSS SP-80 TYP3,CL 300,SZ 1/4IN
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 4820-00-541-0366?

NSN 4820-00-541-0366 is a Valve,angle, manufactured by Manufacturers Standardization Society of the Valve and Fittings Industry Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-541-0366?

NSN 4820-00-541-0366 has 4 cross-referenced part numbers: MSS SP-80 (Manufacturers Standardization Society of the Valve and Fittings Industry Inc), MILV1187 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), TY1,CL300,SZ1.5IN (Manufacturers Standardization Society of the Valve and Fittings Industry Inc), 0531 (Fairbanks Co the).

What NSN replaces 4820-00-541-0366?

There are 12 known substitutes for 4820-00-541-0366: 4820-00-266-9488, 4820-00-276-8953, 4820-00-541-0361 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of TY1,CL300,SZ1.5IN?

Key specifications for TY1,CL300,SZ1.5IN: Media for Which Designed: AIR FIRST RESPONSE; Flow Control Device: DISK; Renewable Seat Ring Type: THREADED; Bonnet Type: INSIDE SCREW. 26 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-541-0366 still in active supply?

NSN 4820-00-541-0366 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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