PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NK1250-1Ring,piston

Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp · NSN 2825-00-740-6821 · FSC 2825 · No Item Name Available
Verified by PartsTable
NSN 2825-00-740-6821 — this item is cataloged by the U.S. Government under National Stock Number 2825-00-740-6821. Primary manufacturer part number: NK1250-1.
Features
  • Ring,piston — FSC 2825
  • Standard Bore Diameter: 3.750 INCHES IN
  • Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE
  • Material: IRON OVERALL
  • Radial Wall Thickness: 0.1880 INCHES NOMINAL IN
  • Joint Style: VERTICAL JOINT
  • Ring Style: CONCENTRIC
  • 3 verified cross-references
Applications
  • Applications requiring Iron Overall construction
General Description

The Ring,piston, cataloged under National Stock Number 2825-00-740-6821, is classified within Federal Supply Class 2825 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp. Government technical data includes 6 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2825-00-740-6821
Primary Part NumberNK1250-1
Item NameRing,piston
FSC / FSG2825 / 28 — No Item Name Available
ManufacturerPentair Valves & Controls Us Lp Div Flow Control Us Holding Corp
StatusACTIVE
Standard Bore Diameter3.750 INCHES IN
Cross-Sectional Shape StylePLAIN RECTANGULAR, STRAIGHT FACE
MaterialIRON OVERALL
Radial Wall Thickness0.1880 INCHES NOMINAL IN
Joint StyleVERTICAL JOINT
Ring StyleCONCENTRIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6625-00-728-3281S60716 INTERCHANGEABLE
Ammeter
Simpson Electric Company, Inc.
2825-00-778-8924 INTERCHANGEABLE
Ring,piston
Cross-Reference Index
Part NumberManufacturer
NK1250-1 Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp (USA)
S-607PC16 Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp (USA)
S607-16 Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp (USA)
Related Parts
6625-00-728-3281INTERCHANGEABLE
AMMETER
S60716
2825-00-778-8924INTERCHANGEABLE
RING,PISTON

Frequently Asked Questions

What is NSN 2825-00-740-6821?

NSN 2825-00-740-6821 is a Ring,piston, manufactured by Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp, classified under FSC 2825 (No Item Name Available). Status: active.

What are the part numbers for NSN 2825-00-740-6821?

NSN 2825-00-740-6821 has 3 cross-referenced part numbers: NK1250-1 (Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp), S-607PC16 (Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp), S607-16 (Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp).

What NSN replaces 2825-00-740-6821?

There are 2 known substitutes for 2825-00-740-6821: 6625-00-728-3281, 2825-00-778-8924. Verify interchangeability with system specifications before substitution.

What are the specifications of NK1250-1?

Key specifications for NK1250-1: Standard Bore Diameter: 3.750 INCHES IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Material: IRON OVERALL; Radial Wall Thickness: 0.1880 INCHES NOMINAL IN. 7 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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