PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40611-8 PC NO 25Piston,valve

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-515-7175 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-515-7175 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-515-7175. Primary manufacturer part number: 40611-8 PC NO 25.
Features
  • Piston,valve — FSC 4820
  • Material: STEEL COMP 303
  • Material Document and Classification: QQ-S-763 ASSN STD SINGLE MATERIAL RESPONSE
  • Valve Size for Which Designed: 1.500 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 Steel Comp 303 construction
General Description

The Piston,valve, cataloged under National Stock Number 4820-01-515-7175, 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-515-7175
Primary Part Number40611-8 PC NO 25
Item NamePiston,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
MaterialSTEEL COMP 303
Material Document and ClassificationQQ-S-763 ASSN STD SINGLE MATERIAL RESPONSE
Valve Size for Which Designed1.500 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5315-00-054-2664104301 INTERCHANGEABLE
Key,machine
Garwood/feller Inc Garwood Winch Div
5310-00-599-16682160 INTERCHANGEABLE
Washer,flat
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
4820-01-515-71401683-01 INTERCHANGEABLE
Disk,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-515-714840611 PC NO 31 INTERCHANGEABLE
Stem,needle Valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-515-716240611-8 PC NO 30 INTERCHANGEABLE
Seat,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-515-716540611-8 PC NO 26 INTERCHANGEABLE
Ring,valve Piston
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-515-718340611-8 PC NO 22 INTERCHANGEABLE
Seat,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-515-719050202-00 INTERCHANGEABLE
Regulator,thermostatic Temperatu
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
5360-01-516-17291844-00 INTERCHANGEABLE
Spring,helical,compression
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
5330-01-516-28882053-00 INTERCHANGEABLE
Gasket
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
1043-01 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40611-8 PC NO 25 PRIMARY Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40611-8 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
5315-00-054-2664INTERCHANGEABLE
KEY,MACHINE
104301
5310-00-599-1668INTERCHANGEABLE
WASHER,FLAT
2160
4820-01-515-7140INTERCHANGEABLE
DISK,VALVE
1683-01
4820-01-515-7148INTERCHANGEABLE
STEM,NEEDLE VALVE
40611 PC NO 31
4820-01-515-7162INTERCHANGEABLE
SEAT,VALVE
40611-8 PC NO 30
4820-01-515-7165INTERCHANGEABLE
RING,VALVE PISTON
40611-8 PC NO 26
4820-01-515-7183INTERCHANGEABLE
SEAT,VALVE
40611-8 PC NO 22
4820-01-515-7190INTERCHANGEABLE
REGULATOR,THERMOSTATIC TEMPERATU
50202-00
5360-01-516-1729INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
1844-00
5330-01-516-2888INTERCHANGEABLE
GASKET
2053-00
4730-01-516-3341INTERCHANGEABLE
RESTRICTOR,FLUID FLOW
2070-00

Frequently Asked Questions

What is NSN 4820-01-515-7175?

NSN 4820-01-515-7175 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 4820-01-515-7175?

NSN 4820-01-515-7175 has 3 cross-referenced part numbers: 1043-01 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40611-8 PC NO 25 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40611-8 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-01-515-7175?

There are 11 known substitutes for 4820-01-515-7175: 5315-00-054-2664, 5310-00-599-1668, 4820-01-515-7140 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40611-8 PC NO 25?

Key specifications for 40611-8 PC NO 25: Material: STEEL COMP 303; Material Document and Classification: QQ-S-763 ASSN STD SINGLE MATERIAL RESPONSE; Valve Size for Which Designed: 1.500 INCHES IN; End Item Identification: E/I VALVE TEMPERATURE REGULATOR. 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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