PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C1951Diaphragm

Griswold Industries Dba Cla-Val Co · NSN 4470-00-419-0674 · FSC 4470 · No Item Name Available
Verified by PartsTable
NSN 4470-00-419-0674 — this item is cataloged by the U.S. Government under National Stock Number 4470-00-419-0674. Primary manufacturer part number: C1951.
Features
  • Diaphragm — FSC 4470
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
  • Criticality Code Justification: ZZZY
  • 3 verified cross-references
  • Primary manufacturer: Griswold Industries Dba Cla-Val Co
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Diaphragm, cataloged under National Stock Number 4470-00-419-0674, is classified within Federal Supply Class 4470 (No Item Name Available) of the Furnace, Steam, Drying, Nuclear Reactors group. The primary manufacturer of record is Griswold Industries Dba Cla-Val Co. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4470-00-419-0674
Primary Part NumberC1951
Item NameDiaphragm
FSC / FSG4470 / 44 — No Item Name Available
ManufacturerGriswold Industries Dba Cla-Val Co
StatusACTIVE
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4820-00-306-1213C1951H INTERCHANGEABLE
Diaphragm,valve,flat
Griswold Industries Dba Cla-Val Co
4820-01-188-1355C1951H 1 1-4IN INTERCHANGEABLE
Diaphragm,valve,flat
Griswold Industries Dba Cla-Val Co
4820-01-560-7380C1951 INTERCHANGEABLE
Diaphragm,valve,flat
Griswold Industries Dba Cla-Val Co
Cross-Reference Index
Part NumberManufacturer
C1951 Griswold Industries Dba Cla-Val Co (USA)
4C-1951H Chesapeake Auto Supply Co Inc (USA)
73201PC4 Griswold Industries Dba Cla-Val Co (USA)
Related Parts
4820-00-306-1213INTERCHANGEABLE
DIAPHRAGM,VALVE,FLAT
C1951H
4820-01-188-1355INTERCHANGEABLE
DIAPHRAGM,VALVE,FLAT
C1951H 1 1-4IN
4820-01-560-7380INTERCHANGEABLE
DIAPHRAGM,VALVE,FLAT
C1951

Frequently Asked Questions

What is NSN 4470-00-419-0674?

NSN 4470-00-419-0674 is a Diaphragm, manufactured by Griswold Industries Dba Cla-Val Co, classified under FSC 4470 (No Item Name Available). Status: active.

What are the part numbers for NSN 4470-00-419-0674?

NSN 4470-00-419-0674 has 3 cross-referenced part numbers: C1951 (Griswold Industries Dba Cla-Val Co), 4C-1951H (Chesapeake Auto Supply Co Inc), 73201PC4 (Griswold Industries Dba Cla-Val Co).

What NSN replaces 4470-00-419-0674?

There are 3 known substitutes for 4470-00-419-0674: 4820-00-306-1213, 4820-01-188-1355, 4820-01-560-7380. Verify interchangeability with system specifications before substitution.

What are the specifications of C1951?

Key specifications for C1951: Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.; Criticality Code Justification: ZZZY. 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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