PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

217-02Piston,valve

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-321-8357 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-321-8357 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-321-8357. Primary manufacturer part number: 217-02.
Features
  • Piston,valve — FSC 4820
  • Valve Size for Which Designed: 1.500 INCHES IN
  • Material: STEEL CORROSION RESISTING
  • 1 verified cross-reference
  • Primary manufacturer: Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Piston,valve, cataloged under National Stock Number 4820-01-321-8357, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-321-8357
Primary Part Number217-02
Item NamePiston,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
Valve Size for Which Designed1.500 INCHES IN
MaterialSTEEL CORROSION RESISTING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5977-00-038-0955 INTERCHANGEABLE
Holder,electrical Contact Brush
5360-00-143-0259 INTERCHANGEABLE
Spring,helical,compression
5360-00-200-685921702 INTERCHANGEABLE
Spring,helical,compression
Grove Valve Operations
5999-00-468-225121-702 INTERCHANGEABLE
Contact,electrical
Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc
5930-00-642-93838403-1 INTERCHANGEABLE
Switch,pressure
Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S
5120-01-335-140921702 INTERCHANGEABLE
Punch,drive Pin
Mayhew Steel Products Inc
4730-01-375-732936747E INTERCHANGEABLE
Strainer Element,sediment
Griswold Industries Dba Cla-Val Co
1630-01-514-26752-1702 INTERCHANGEABLE
Brake,multiple Disk
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
Cross-Reference Index
Part NumberManufacturer
217-02 PRIMARY Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
5977-00-038-0955INTERCHANGEABLE
HOLDER,ELECTRICAL CONTACT BRUSH
5360-00-143-0259INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5360-00-200-6859INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
21702
5999-00-468-2251INTERCHANGEABLE
CONTACT,ELECTRICAL
21-702
5930-00-642-9383INTERCHANGEABLE
SWITCH,PRESSURE
8403-1
5120-01-335-1409INTERCHANGEABLE
PUNCH,DRIVE PIN
21702
4730-01-375-7329INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
36747E
1630-01-514-2675INTERCHANGEABLE
BRAKE,MULTIPLE DISK
2-1702

Frequently Asked Questions

What is NSN 4820-01-321-8357?

NSN 4820-01-321-8357 is a Piston,valve, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-321-8357?

NSN 4820-01-321-8357 has 1 cross-referenced part number: 217-02 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-01-321-8357?

There are 8 known substitutes for 4820-01-321-8357: 5977-00-038-0955, 5360-00-143-0259, 5360-00-200-6859 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 217-02?

Key specifications for 217-02: Valve Size for Which Designed: 1.500 INCHES IN; Material: STEEL CORROSION RESISTING. 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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