PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1816-00Retainer,disk,valve

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-509-2597 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-509-2597 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-509-2597. Primary manufacturer part number: 1816-00.
Features
  • Retainer,disk,valve — FSC 4820
  • Material: NICKEL ALLOY
  • Valve Design Control Activity: 55378
  • Valve Size for Which Designed: 2.000 INCHES IN
  • 3 verified cross-references
  • 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 Nickel Alloy construction
General Description

The Retainer,disk,valve, cataloged under National Stock Number 4820-01-509-2597, 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 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN4820-01-509-2597
Primary Part Number1816-00
Item NameRetainer,disk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
MaterialNICKEL ALLOY
Valve Design Control Activity55378
Valve Size for Which Designed2.000 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5330-00-606-7087181600 INTERCHANGEABLE
Gasket
Dresser, Llc
4210-01-220-465018-1600 INTERCHANGEABLE
Drain,automatic,fire Sprinkling
Aerocontrolex Group, Inc. Dba Aero Fluid Products
4820-01-509-16001814-00 INTERCHANGEABLE
Liner,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-509-20621815-00 INTERCHANGEABLE
Seat,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-509-26411813-00 INTERCHANGEABLE
Stem,fluid Valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-509-292140722-402 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-509-29991829-00 INTERCHANGEABLE
Stem,support,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
5998-01-627-12764072-2-4 INTERCHANGEABLE
Circuit Card Assembly
Astronics Test Systems Inc
4820-01-679-676840722-404 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
40722-4 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40722-4 FIND NO. 15 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
1816-00 PRIMARY Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
5330-00-606-7087INTERCHANGEABLE
GASKET
181600
4210-01-220-4650INTERCHANGEABLE
DRAIN,AUTOMATIC,FIRE SPRINKLING
18-1600
4820-01-509-1600INTERCHANGEABLE
LINER,VALVE
1814-00
4820-01-509-2062INTERCHANGEABLE
SEAT,VALVE
1815-00
4820-01-509-2641INTERCHANGEABLE
STEM,FLUID VALVE
1813-00
4820-01-509-2921INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
40722-402
4820-01-509-2999INTERCHANGEABLE
STEM,SUPPORT,VALVE
1829-00
5998-01-627-1276INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
4072-2-4
4820-01-679-6768INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
40722-404

Frequently Asked Questions

What is NSN 4820-01-509-2597?

NSN 4820-01-509-2597 is a Retainer,disk,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 4820-01-509-2597?

NSN 4820-01-509-2597 has 3 cross-referenced part numbers: 40722-4 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40722-4 FIND NO. 15 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 1816-00 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-01-509-2597?

There are 9 known substitutes for 4820-01-509-2597: 5330-00-606-7087, 4210-01-220-4650, 4820-01-509-1600 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1816-00?

Key specifications for 1816-00: Material: NICKEL ALLOY; Special Features: NHA PRESSURE REDUCING VALVE; Valve Design Control Activity: 55378; Valve Size for Which Designed: 2.000 INCHES IN. 4 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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