PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

506-18Seat,valve

Zurn Industries Inc Wilkins Regulator Co Div · NSN 4820-01-278-7532 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-278-7532 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-278-7532. Primary manufacturer part number: 506-18.
Features
  • Seat,valve — FSC 4820
  • Material: COPPER ALLOY OVERALL
  • 2 verified cross-references
  • Primary manufacturer: Zurn Industries Inc Wilkins Regulator Co Div
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-278-7532, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Zurn Industries Inc Wilkins Regulator Co Div. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-278-7532
Primary Part Number506-18
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerZurn Industries Inc Wilkins Regulator Co Div
StatusACTIVE
MaterialCOPPER ALLOY OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5950-00-907-7598 INTERCHANGEABLE
Transformer,radio Frequency
5995-01-425-648250618 INTERCHANGEABLE
Cable Assembly,radio Frequency
C.e. Precision Assemblies, Llc
9905-01-425-812950-618 INTERCHANGEABLE
Plate,identification
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
4610-01-630-3033 INTERCHANGEABLE
Strainer,inline,1-1
Cross-Reference Index
Part NumberManufacturer
506-18 PRIMARY Zurn Industries Inc Wilkins Regulator Co Div (USA)
506-18 The Wilkins Co Inc (USA)
Related Parts
5950-00-907-7598INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
5995-01-425-6482INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
50618
9905-01-425-8129INTERCHANGEABLE
PLATE,IDENTIFICATION
50-618
4610-01-630-3033INTERCHANGEABLE
STRAINER,INLINE,1-1

Frequently Asked Questions

What is NSN 4820-01-278-7532?

NSN 4820-01-278-7532 is a Seat,valve, manufactured by Zurn Industries Inc Wilkins Regulator Co Div, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-278-7532?

NSN 4820-01-278-7532 has 2 cross-referenced part numbers: 506-18 (Zurn Industries Inc Wilkins Regulator Co Div), 506-18 (The Wilkins Co Inc).

What NSN replaces 4820-01-278-7532?

There are 4 known substitutes for 4820-01-278-7532: 5950-00-907-7598, 5995-01-425-6482, 9905-01-425-8129 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 506-18?

Key specifications for 506-18: Material: COPPER ALLOY OVERALL; End Item Identification: VALVE REGULATING FLUID PRESSURE,WILKINS REGULATOR CO. MDL 330,2IN. SIDE IN. 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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