PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SA15550-2TValve,angle

Dragon Valves Inc · NSN 4820-01-340-4031 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-340-4031 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-340-4031. Primary manufacturer part number: SA15550-2T.
Features
  • Valve,angle — FSC 4820
  • Flow Control Device: DISK
  • Media for Which Designed: WATER-OIL-GAS SINGLE RESPONSE
  • Operating Pressure: 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Material: STEEL CORROSION RESISTING STEM
  • Nominal Outside Diameter Tube Accommodated: 0.250 INCHES ALL ENDS IN
  • Material: STEEL CORROSION RESISTING BODY
  • Style Designator: ANGLE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Stem construction
General Description

The Valve,angle, cataloged under National Stock Number 4820-01-340-4031, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Dragon Valves Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, 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
NSN4820-01-340-4031
Primary Part NumberSA15550-2T
Item NameValve,angle
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerDragon Valves Inc
StatusCANCELLED
Flow Control DeviceDISK
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSE
Operating Pressure6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MaterialSTEEL CORROSION RESISTING STEM
Nominal Outside Diameter Tube Accommodated0.250 INCHES ALL ENDS IN
MaterialSTEEL CORROSION RESISTING BODY
Style DesignatorANGLE
Bonnet Attachment MethodUNION
Bonnet TypeINSIDE SCREW
Connection StyleSOCKET (TUBE) ALL ENDS
Connection TypeUNTHREADED INTERNAL TUBE ALL ENDS
MaterialSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
Valve Operation MethodMANUAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-144-8498059-9 INTERCHANGEABLE
Bearing,ball,annular
Lockheed Martin Corporation Div Rms - Mitchel Field
2990-00-459-713515877 INTERCHANGEABLE
Plate,end,fuel Pump
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5865-00-824-590315877-01 INTERCHANGEABLE
Oscillator Assy,bia
Drs C3 & Aviation Company Dba Drs Data & Imaging Systems
4820-00-909-872715877 INTERCHANGEABLE
Body,valve
Mission Systems Orchard Park Inc
5330-00-966-897815877 INTERCHANGEABLE
Packing,preformed
Hyster-Yale Group, Inc.
4320-00-988-945602-5-14-1285ITEM2-29 INTERCHANGEABLE
Clamp,mechanical
W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center
6145-01-015-439015877 INTERCHANGEABLE
Cable,power,electrical
Champlain Cable Leeds Corporation
2530-01-063-5230 INTERCHANGEABLE
Plunger,relief Valve
5985-01-279-4712 INTERCHANGEABLE
Waveguide Assembly
3020-01-298-940515-5502 INTERCHANGEABLE
Gear,spur
Taiwan Machinery Trade Center
Cross-Reference Index
Part NumberManufacturer
SA15550-2T PRIMARY Dragon Valves Inc (USA)
15550-2 PRIMARY Dragon Valves Inc (USA)
15877F P/N SA15550-2T Dragon Valves Inc (USA)
15877 Dragon Valves Inc (USA)
Related Parts
3110-00-144-8498INTERCHANGEABLE
BEARING,BALL,ANNULAR
059-9
2990-00-459-7135INTERCHANGEABLE
PLATE,END,FUEL PUMP
15877
5865-00-824-5903INTERCHANGEABLE
OSCILLATOR ASSY,BIA
15877-01
4820-00-909-8727INTERCHANGEABLE
BODY,VALVE
15877
5330-00-966-8978INTERCHANGEABLE
PACKING,PREFORMED
15877
4320-00-988-9456INTERCHANGEABLE
CLAMP,MECHANICAL
02-5-14-1285ITEM2-29
6145-01-015-4390INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
15877
2530-01-063-5230INTERCHANGEABLE
PLUNGER,RELIEF VALVE
5985-01-279-4712INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
3020-01-298-9405INTERCHANGEABLE
GEAR,SPUR
15-5502
5950-01-304-5109INTERCHANGEABLE
REACTOR
15877
5310-01-353-0337INTERCHANGEABLE
WASHER,FLAT
158.77

Frequently Asked Questions

What is NSN 4820-01-340-4031?

NSN 4820-01-340-4031 is a Valve,angle, manufactured by Dragon Valves Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-340-4031?

NSN 4820-01-340-4031 has 4 cross-referenced part numbers: SA15550-2T (Dragon Valves Inc), 15550-2 (Dragon Valves Inc), 15877F P/N SA15550-2T (Dragon Valves Inc), 15877 (Dragon Valves Inc).

What NSN replaces 4820-01-340-4031?

There are 12 known substitutes for 4820-01-340-4031: 3110-00-144-8498, 2990-00-459-7135, 5865-00-824-5903 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SA15550-2T?

Key specifications for SA15550-2T: Flow Control Device: DISK; Media for Which Designed: WATER-OIL-GAS SINGLE RESPONSE; Operating Pressure: 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Material: STEEL CORROSION RESISTING STEM. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-340-4031 still in active supply?

NSN 4820-01-340-4031 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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