PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

202573KValve,safety Relief

Griswold Industries Dba Cla-Val Co · NSN 4820-01-550-6436 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-550-6436 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-550-6436. Primary manufacturer part number: 202573K.
Features
  • Valve,safety Relief — FSC 4820
  • 3 verified cross-references
  • Primary manufacturer: Griswold Industries Dba Cla-Val Co
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-550-6436, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Griswold Industries Dba Cla-Val Co. This item has 3 commercial cross-references 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 NameValve,safety Relief
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersGriswold Industries Dba Cla-Val Co (CAGE 86184)
Technical Specifications
ParameterValue
NSN4820-01-550-6436
Primary Part Number202573K
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerGriswold Industries Dba Cla-Val Co
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6675-00-023-5052 INTERCHANGEABLE
Bag,surveyor's
3110-00-100-058644348 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
Cross-Reference Index
Part NumberManufacturer
202573 Griswold Industries Dba Cla-Val Co (USA)
202574 ASSEMBLY 202573K Griswold Industries Dba Cla-Val Co (USA)
202573K PRIMARY Griswold Industries Dba Cla-Val Co (USA)
Related Parts
6675-00-023-5052INTERCHANGEABLE
BAG,SURVEYOR'S
3110-00-100-0586INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
44348

Frequently Asked Questions

What is NSN 4820-01-550-6436?

NSN 4820-01-550-6436 is a Valve,safety Relief, manufactured by Griswold Industries Dba Cla-Val Co, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-550-6436?

NSN 4820-01-550-6436 has 3 cross-referenced part numbers: 202573 (Griswold Industries Dba Cla-Val Co), 202574 ASSEMBLY 202573K (Griswold Industries Dba Cla-Val Co), 202573K (Griswold Industries Dba Cla-Val Co).

What NSN replaces 4820-01-550-6436?

There are 2 known substitutes for 4820-01-550-6436: 6675-00-023-5052, 3110-00-100-0586. Verify interchangeability with system specifications before substitution.

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