PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BA-370 .25IPSValve,ball

Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc · NSN 4820-01-387-4052 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-387-4052 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-387-4052. Primary manufacturer part number: BA-370 .25IPS.
Features
  • Valve,ball — FSC 4820
  • Nominal Thread Size: 0.250 INCHES ALL ENDS IN
  • Style Designator: STRAIGHT THRU
  • Material: STEEL FLOW CONTROL DEVICE
  • Material: STEEL UNS J03002 BODY
  • Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
  • Material: STEEL STEM
  • Operating Pressure: 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Flow Control Device construction
General Description

The Valve,ball, cataloged under National Stock Number 4820-01-387-4052, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-387-4052
Primary Part NumberBA-370 .25IPS
Item NameValve,ball
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMilwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
StatusACTIVE
Nominal Thread Size0.250 INCHES ALL ENDS IN
Style DesignatorSTRAIGHT THRU
MaterialSTEEL FLOW CONTROL DEVICE
MaterialSTEEL UNS J03002 BODY
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
MaterialSTEEL STEM
Operating Pressure1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Connection StylePLAIN,OPTIONAL END(PIPE) ALL ENDS
Valve Operation MethodMANUAL
Media for Which DesignedSTEAM SECOND RESPONSE
Thread Series DesignatorNPT ALL ENDS
Media for Which DesignedWATER-OIL-GAS FIRST RESPONSE
Thread DirectionRIGHT-HAND ALL ENDS
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3040-00-689-6512 INTERCHANGEABLE
Cam,control
6620-01-584-6653831010-1 INTERCHANGEABLE
Gage,calibration,nt
Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
Cross-Reference Index
Part NumberManufacturer
000373456-001 Wartsila Lips Inc (USA)
1/4-444BSE Worcester Controls Corp P O Box 2609 Cookeville Tn 385022609 (USA)
83-101-01 Conbraco Industries Inc (USA)
000 373 456 ITEM 001 Waukesha Bearings Corporation (USA)
000 373 456 Waukesha Bearings Corporation (USA)
SP-E-12.25-S-B0-2 Imi Critical Engr Pbm Llc (USA)
BA-370 .25IPS PRIMARY Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
Related Parts
3040-00-689-6512INTERCHANGEABLE
CAM,CONTROL
6620-01-584-6653INTERCHANGEABLE
GAGE,CALIBRATION,NT
831010-1

Frequently Asked Questions

What is NSN 4820-01-387-4052?

NSN 4820-01-387-4052 is a Valve,ball, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-387-4052?

NSN 4820-01-387-4052 has 7 cross-referenced part numbers: 000373456-001 (Wartsila Lips Inc), 1/4-444BSE (Worcester Controls Corp P O Box 2609 Cookeville Tn 385022609), 83-101-01 (Conbraco Industries Inc), 000 373 456 ITEM 001 (Waukesha Bearings Corporation), 000 373 456 (Waukesha Bearings Corporation) and 2 more.

What NSN replaces 4820-01-387-4052?

There are 2 known substitutes for 4820-01-387-4052: 3040-00-689-6512, 6620-01-584-6653. Verify interchangeability with system specifications before substitution.

What are the specifications of BA-370 .25IPS?

Key specifications for BA-370 .25IPS: Nominal Thread Size: 0.250 INCHES ALL ENDS IN; Style Designator: STRAIGHT THRU; Material: STEEL FLOW CONTROL DEVICE; Material: STEEL UNS J03002 BODY. 14 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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