PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51583 ITEM 37 & 38Valve,gate

Velan Valve Corp. · NSN 4820-01-633-8845 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-633-8845 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-633-8845. Primary manufacturer part number: 51583 ITEM 37 & 38.
Features
  • Valve,gate — FSC 4820
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
  • 6 verified cross-references
  • Primary manufacturer: Velan Valve Corp.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,gate, cataloged under National Stock Number 4820-01-633-8845, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Velan Valve Corp.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, 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
NSN4820-01-633-8845
Primary Part Number51583 ITEM 37 & 38
Item NameValve,gate
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerVelan Valve Corp.
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4820-01-536-9178 INTERCHANGEABLE
Valve,gate
Cross-Reference Index
Part NumberManufacturer
51583 ITEM 37 & 38 Velan Valve Corp. (USA)
88326 10.0IPSL1 Naval Inventory Control Point Mechanicsburg (USA)
B16-2A5PS-2TS Velan Valve Corp. (USA)
B16-2A5PS-2TSL1 Naval Inventory Control Point Mechanicsburg (USA)
88326 10.0IPS Velan Valve Corp. (USA)
51583 ITEM 37 & 38L1 Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
4820-01-536-9178INTERCHANGEABLE
VALVE,GATE

Frequently Asked Questions

What is NSN 4820-01-633-8845?

NSN 4820-01-633-8845 is a Valve,gate, manufactured by Velan Valve Corp., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-633-8845?

NSN 4820-01-633-8845 has 6 cross-referenced part numbers: 51583 ITEM 37 & 38 (Velan Valve Corp.), 88326 10.0IPSL1 (Naval Inventory Control Point Mechanicsburg), B16-2A5PS-2TS (Velan Valve Corp.), B16-2A5PS-2TSL1 (Naval Inventory Control Point Mechanicsburg), 88326 10.0IPS (Velan Valve Corp.) and 1 more.

What NSN replaces 4820-01-633-8845?

There is 1 known substitute for 4820-01-633-8845: 4820-01-536-9178. Verify interchangeability with system specifications before substitution.

What are the specifications of 51583 ITEM 37 & 38?

Key specifications for 51583 ITEM 37 & 38: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS. 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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