PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

49933FPiston,valve

Griswold Industries Dba Cla-Val Co · NSN 4820-01-225-6960 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-225-6960 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-225-6960. Primary manufacturer part number: 49933F.
Features
  • Piston,valve — FSC 4820
  • Valve Design Control Activity: 86184
  • Valve Type for Which Designed: GLOBE
  • Valve Model Number for Which Designed: 240M3
  • Material: COPPER ALLOY
  • Material Document and Classification: MIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE
  • 4 verified cross-references
  • Primary manufacturer: Griswold Industries Dba Cla-Val Co
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy construction
General Description

The Piston,valve, cataloged under National Stock Number 4820-01-225-6960, 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. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-225-6960
Primary Part Number49933F
Item NamePiston,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerGriswold Industries Dba Cla-Val Co
StatusACTIVE
Valve Design Control Activity86184
Valve Type for Which DesignedGLOBE
Valve Model Number for Which Designed240M3
MaterialCOPPER ALLOY
Material Document and ClassificationMIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5935-00-561-2047371-1059-00 INTERCHANGEABLE
Connector,receptacle,electrical
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5930-01-165-506449933 INTERCHANGEABLE
Switch,liquid Level
Setra Systems, Inc. Dba Gems Sensors
5330-01-225-688449873D INTERCHANGEABLE
Ring,wiper
Griswold Industries Dba Cla-Val Co
4820-01-225-689849925B INTERCHANGEABLE
Seat,valve
Griswold Industries Dba Cla-Val Co
4810-01-225-691849934D INTERCHANGEABLE
Retainer,wiper Ring,valve
Griswold Industries Dba Cla-Val Co
4810-01-225-693049932H INTERCHANGEABLE
Guide,valve Disk
Griswold Industries Dba Cla-Val Co
4820-01-225-693749927H INTERCHANGEABLE
Stem,fluid Valve
Griswold Industries Dba Cla-Val Co
4820-01-225-695449926K INTERCHANGEABLE
Retainer,disk,valve
Griswold Industries Dba Cla-Val Co
5930-01-607-38984993-3 INTERCHANGEABLE
Switch,flow
Eaton Aerospace Llc Ed and C Div
Cross-Reference Index
Part NumberManufacturer
49933 Griswold Industries Dba Cla-Val Co (USA)
49933F PRIMARY Griswold Industries Dba Cla-Val Co (USA)
49879 Griswold Industries Dba Cla-Val Co (USA)
49879 PIECE 30 Griswold Industries Dba Cla-Val Co (USA)
Related Parts
5935-00-561-2047INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
371-1059-00
5930-01-165-5064INTERCHANGEABLE
SWITCH,LIQUID LEVEL
49933
5330-01-225-6884INTERCHANGEABLE
RING,WIPER
49873D
4820-01-225-6898INTERCHANGEABLE
SEAT,VALVE
49925B
4810-01-225-6918INTERCHANGEABLE
RETAINER,WIPER RING,VALVE
49934D
4810-01-225-6930INTERCHANGEABLE
GUIDE,VALVE DISK
49932H
4820-01-225-6937INTERCHANGEABLE
STEM,FLUID VALVE
49927H
4820-01-225-6954INTERCHANGEABLE
RETAINER,DISK,VALVE
49926K
5930-01-607-3898INTERCHANGEABLE
SWITCH,FLOW
4993-3

Frequently Asked Questions

What is NSN 4820-01-225-6960?

NSN 4820-01-225-6960 is a Piston,valve, 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 4820-01-225-6960?

NSN 4820-01-225-6960 has 4 cross-referenced part numbers: 49933 (Griswold Industries Dba Cla-Val Co), 49933F (Griswold Industries Dba Cla-Val Co), 49879 (Griswold Industries Dba Cla-Val Co), 49879 PIECE 30 (Griswold Industries Dba Cla-Val Co).

What NSN replaces 4820-01-225-6960?

There are 9 known substitutes for 4820-01-225-6960: 5935-00-561-2047, 5930-01-165-5064, 5330-01-225-6884 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 49933F?

Key specifications for 49933F: Valve Design Control Activity: 86184; Valve Type for Which Designed: GLOBE; Valve Model Number for Which Designed: 240M3; Material: COPPER ALLOY. 5 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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