PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

803-1385637-062Valve,check

Naval Ship Systems Command · NSN 4820-01-438-3050 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-438-3050 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-438-3050. Primary manufacturer part number: 803-1385637-062.
Features
  • Valve,check — FSC 4820
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT, MECHANICSBURG, ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
  • Criticality Code Justification: ZZZY
  • 1 verified cross-reference
  • Primary manufacturer: Naval Ship Systems Command
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,check, cataloged under National Stock Number 4820-01-438-3050, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 2 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-438-3050
Primary Part Number803-1385637-062
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusACTIVE
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT, MECHANICSBURG, ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4820-00-489-53481260-011K 600 INTERCHANGEABLE
Valve,check
Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
4820-01-116-4865 INTERCHANGEABLE
Valve,check
4820-01-348-6202803-1385637-062 INTERCHANGEABLE
Valve,check
Naval Ship Systems Command
Cross-Reference Index
Part NumberManufacturer
803-1385637-062 Naval Ship Systems Command (USA)
Related Parts
4820-00-489-5348INTERCHANGEABLE
VALVE,CHECK
1260-011K 600
4820-01-116-4865INTERCHANGEABLE
VALVE,CHECK
4820-01-348-6202INTERCHANGEABLE
VALVE,CHECK
803-1385637-062

Frequently Asked Questions

What is NSN 4820-01-438-3050?

NSN 4820-01-438-3050 is a Valve,check, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-438-3050?

NSN 4820-01-438-3050 has 1 cross-referenced part number: 803-1385637-062 (Naval Ship Systems Command).

What NSN replaces 4820-01-438-3050?

There are 3 known substitutes for 4820-01-438-3050: 4820-00-489-5348, 4820-01-116-4865, 4820-01-348-6202. Verify interchangeability with system specifications before substitution.

What are the specifications of 803-1385637-062?

Key specifications for 803-1385637-062: Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT, MECHANICSBURG, ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS; Criticality Code Justification: ZZZY. 2 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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