PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RMB53PFMeter,flow Rate Indicating

Dwyer Instruments Inc · NSN 6680-01-145-2475 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-01-145-2475 — this item is cataloged by the U.S. Government under National Stock Number 6680-01-145-2475. Primary manufacturer part number: RMB53PF.
Features
  • Meter,flow Rate Indicating — FSC 6680
  • Integral Relief Valve: NOT INCLUDED
  • Meter Type: FLOAT
  • Material: GLASS FLOAT
  • Material: PLASTIC TUBE
  • Spinning Float: NOT INCLUDED
  • Dial Scale Reference Pointer: INCLUDED
  • Outlet Connection Position for Which Designed: VERTICAL
Applications
  • Applications requiring Glass Float construction
General Description

The Meter,flow Rate Indicating, cataloged under National Stock Number 6680-01-145-2475, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Dwyer Instruments Inc. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, 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
NSN6680-01-145-2475
Primary Part NumberRMB53PF
Item NameMeter,flow Rate Indicating
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerDwyer Instruments Inc
StatusACTIVE
Integral Relief ValveNOT INCLUDED
Meter TypeFLOAT
MaterialGLASS FLOAT
MaterialPLASTIC TUBE
Spinning FloatNOT INCLUDED
Dial Scale Reference PointerINCLUDED
Outlet Connection Position for Which DesignedVERTICAL
Integral Pulsation DampenerNOT INCLUDED
Maximum Working Pressure70.0 POUNDS PER SQUARE INCH (PSI) LBS
Metering Tube Quantity1
BaseNOT INCLUDED
Mounting MethodFLUSH PANEL OR SURFACE PANEL
Integral Heat SourceNOT INCLUDED
Float TypeFREE
Carrying HandleNOT INCLUDED
Alarm SignalNOT INCLUDED
Dial Scale Marking Range+10.0 TO 100.0
Outlet Connection Size0.250 IN. NPT IN
Inlet Connection Position for Which DesignedVERTICAL
Inlet Connection Size0.250 IN. NPT IN
ConstructionINCLOSED W/SIGHT WINDOW
Scale Quantity1
Float Quantity1
Outlet Connection TypeTHREADED
Design TypeCASE
Media for Which DesignedAIR
Unit TypeMOUNTED
Inlet Connection TypeTHREADED
Unable to DecodeUNABLE TO DECODE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3110-00-142-4285 INTERCHANGEABLE
Bearing,ball,airframe
3110-00-156-3467102668-22 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6625-00-604-26377688-1 INTERCHANGEABLE
Voltmeter
Kurz & Root Generator Company, Llc
5999-00-938-223761-85 INTERCHANGEABLE
Delay Line
Esc Control Electronics Llc Dba Control Electronics Division of Fil-Coil
5935-01-013-71771160002P2 INTERCHANGEABLE
Connector,receptacle,electrical
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
6680-01-141-75036185-3 INTERCHANGEABLE
Meter,flow Rate Indicating
Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect
5315-01-305-59886185 INTERCHANGEABLE
Pin,straight,headless
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
5307-01-316-298612342133 INTERCHANGEABLE
Stud,locked in
U S Army Tank Automotive Command Amsta-Im-Mm
4520-01-610-6169 INTERCHANGEABLE
Heater,water,gas
6640-01-622-39516185 INTERCHANGEABLE
Block,insect Fixation
Bioquip Products, Inc.
Cross-Reference Index
Part NumberManufacturer
RMB53PF PRIMARY Dwyer Instruments Inc (USA)
6185-80 Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect (USA)
6185-80 Air Dry Co of America, Llc (USA)
6185 Air Dry Co of America, Llc (USA)
6185 Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect (USA)
Related Parts
3110-00-142-4285INTERCHANGEABLE
BEARING,BALL,AIRFRAME
3110-00-156-3467INTERCHANGEABLE
BEARING,BALL,ANNULAR
102668-22
6625-00-604-2637INTERCHANGEABLE
VOLTMETER
7688-1
5999-00-938-2237INTERCHANGEABLE
DELAY LINE
61-85
5935-01-013-7177INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
1160002P2
6680-01-141-7503INTERCHANGEABLE
METER,FLOW RATE INDICATING
6185-3
5315-01-305-5988INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
6185
5307-01-316-2986INTERCHANGEABLE
STUD,LOCKED IN
12342133
4520-01-610-6169INTERCHANGEABLE
HEATER,WATER,GAS
6640-01-622-3951INTERCHANGEABLE
BLOCK,INSECT FIXATION
6185
5305-01-665-7741INTERCHANGEABLE
SETSCREW
6185

Frequently Asked Questions

What is NSN 6680-01-145-2475?

NSN 6680-01-145-2475 is a Meter,flow Rate Indicating, manufactured by Dwyer Instruments Inc, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-01-145-2475?

NSN 6680-01-145-2475 has 5 cross-referenced part numbers: RMB53PF (Dwyer Instruments Inc), 6185-80 (Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect), 6185-80 (Air Dry Co of America, Llc), 6185 (Air Dry Co of America, Llc), 6185 (Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect).

What NSN replaces 6680-01-145-2475?

There are 11 known substitutes for 6680-01-145-2475: 3110-00-142-4285, 3110-00-156-3467, 6625-00-604-2637 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of RMB53PF?

Key specifications for RMB53PF: Integral Relief Valve: NOT INCLUDED; Meter Type: FLOAT; Material: GLASS FLOAT; Material: PLASTIC TUBE. 30 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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