PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

83427Seat,valve

Ashcroft Inc Dba Heise · NSN 4820-00-036-1883 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-036-1883 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-036-1883. Primary manufacturer part number: 83427.
Features
  • Seat,valve — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Ashcroft Inc Dba Heise
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-036-1883, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Ashcroft Inc Dba Heise. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeat,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersAshcroft Inc Dba Heise (CAGE 38056)
Technical Specifications
ParameterValue
NSN4820-00-036-1883
Primary Part Number83427
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5815-00-126-868783427 INTERCHANGEABLE
Glass
Telemechanics Inc
4470-00-935-9480 INTERCHANGEABLE
Washer,shear Seal Spring
Cross-Reference Index
Part NumberManufacturer
83427 PRIMARY Ashcroft Inc Dba Heise (USA)
Related Parts
5815-00-126-8687INTERCHANGEABLE
GLASS
83427
4470-00-935-9480INTERCHANGEABLE
WASHER,SHEAR SEAL SPRING

Frequently Asked Questions

What is NSN 4820-00-036-1883?

NSN 4820-00-036-1883 is a Seat,valve, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-036-1883?

NSN 4820-00-036-1883 has 1 cross-referenced part number: 83427 (Ashcroft Inc Dba Heise).

What NSN replaces 4820-00-036-1883?

There are 2 known substitutes for 4820-00-036-1883: 5815-00-126-8687, 4470-00-935-9480. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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