PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

549-1 1-2INValve,lift-Check

Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc · NSN 4820-01-059-1176 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-059-1176 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-059-1176. Primary manufacturer part number: 549-1 1-2IN.
Features
  • Valve,lift-Check — FSC 4820
  • Bonnet Type: PACKING RETAINING
  • Connection Style: STREAMLINED WITH ONE BRAZING RING (PIPE) ALL ENDS
  • Valve Operation Method: AUTOMATIC
  • Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS
  • Mounting Position: HORIZONTAL OR VERTICAL
  • Flow Control Device: DISK
  • Nominal Pipe Size Accommodated: 0.500 INCHES ALL ENDS IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Overall construction
General Description

The Valve,lift-Check, cataloged under National Stock Number 4820-01-059-1176, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-059-1176
Primary Part Number549-1 1-2IN
Item NameValve,lift-Check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMilwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
StatusACTIVE
Bonnet TypePACKING RETAINING
Connection StyleSTREAMLINED WITH ONE BRAZING RING (PIPE) ALL ENDS
Valve Operation MethodAUTOMATIC
Connection TypeUNTHREADED INTERNAL PIPE ALL ENDS
Mounting PositionHORIZONTAL OR VERTICAL
Flow Control DeviceDISK
Nominal Pipe Size Accommodated0.500 INCHES ALL ENDS IN
MaterialCOPPER ALLOY OVERALL
Media for Which DesignedSTEAM SINGLE RESPONSE
Style DesignatorSTRAIGHT THRU
Operating Pressure700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
7510-01-070-0920P5067-1-050 INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
Cross-Reference Index
Part NumberManufacturer
549-1 1-2IN PRIMARY Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA)
Related Parts
7510-01-070-0920INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
P5067-1-050

Frequently Asked Questions

What is NSN 4820-01-059-1176?

NSN 4820-01-059-1176 is a Valve,lift-Check, 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 4820-01-059-1176?

NSN 4820-01-059-1176 has 1 cross-referenced part number: 549-1 1-2IN (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc).

What NSN replaces 4820-01-059-1176?

There is 1 known substitute for 4820-01-059-1176: 7510-01-070-0920. Verify interchangeability with system specifications before substitution.

What are the specifications of 549-1 1-2IN?

Key specifications for 549-1 1-2IN: Bonnet Type: PACKING RETAINING; Connection Style: STREAMLINED WITH ONE BRAZING RING (PIPE) ALL ENDS; Valve Operation Method: AUTOMATIC; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS. 11 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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