PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1C4818Valve,check

Crissair Inc Div Esco Technologies · NSN 4820-01-673-6982 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-673-6982 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-673-6982. Primary manufacturer part number: 1C4818.
Features
  • Valve,check — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Crissair Inc Div Esco Technologies
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,check, cataloged under National Stock Number 4820-01-673-6982, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Crissair Inc Div Esco Technologies. This item has 2 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.

Catalog Facts
Item NameValve,check
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersHamilton Sundstrand Corporation Dba Collins Aerospace (CAGE 73030); Crissair Inc Div Esco Technologies (CAGE 99240)
Technical Specifications
ParameterValue
NSN4820-01-673-6982
Primary Part Number1C4818
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCrissair Inc Div Esco Technologies
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5325-01-252-9827SH-68ST PD INTERCHANGEABLE
Ring,retaining
Rotor Clip Company, Inc.
Cross-Reference Index
Part NumberManufacturer
5100068 Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
1C4818 PRIMARY Crissair Inc Div Esco Technologies (USA)
Related Parts
5325-01-252-9827INTERCHANGEABLE
RING,RETAINING
SH-68ST PD

Frequently Asked Questions

What is NSN 4820-01-673-6982?

NSN 4820-01-673-6982 is a Valve,check, manufactured by Crissair Inc Div Esco Technologies, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-673-6982?

NSN 4820-01-673-6982 has 2 cross-referenced part numbers: 5100068 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 1C4818 (Crissair Inc Div Esco Technologies).

What NSN replaces 4820-01-673-6982?

There is 1 known substitute for 4820-01-673-6982: 5325-01-252-9827. Verify interchangeability with system specifications before substitution.

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