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  Our Catalog   Hydraulics, Pneumatics & Plumbing   Flow Switches

Flow Switches - 65 - Extreame Savings! Save up to 41%


Extreame Savings! Up to 41% off on Flow Switches at In The National Interest. Top brands include Gits Manufacturing, Dwyer, Gems Sensors, Cimtek, Mcdonnell & Miller, Altech, Asco, Fill-Rite, Fanuc Robotics, & Branson Ultrasonics. Hurry! Limited time offers. Offers valid only while supplies last.



Gits 1637-037800 Style 1637 Breather Vent, 3/8-18 NPT Breather with Screen and Nylon Filter
Gits 1637-037800 Style 1637 Breather Vent, 3/8-18 NPT Breather with Screen and Nylon Filter
In Stock
$19.79

mpn: 1637-037800,

This popular style offers greater filtered air flow with better protection against clogging from dirt accumulating on the equipment. The design incorporates more vent ports and they are located higher on the body of the unit for greater clearance. Th...


Dwyer WE Anderson Series FS-2 Vane Flow Switch, Paddle, 1'' Male NPT, 145 psig Max. Pressure
Dwyer WE Anderson Series FS-2 Vane Flow Switch, Paddle, 1" Male NPT, 145 psig Max. Pressure
In Stock
$47.00

mpn: FS-2,

The Series Fs-2 Vane Flow Switches Offers An Economical Flow Proving Solution. The Fs-2 Paddles Are Adjustable To Fit 1 To 8" Size Pipe. Made in United States. Manufactured by Dwyer Instruments.Low Cost. Field Adjustable Set Point And Paddle. Sold As...


Gems Sensors 165800 Polypropylene Float Small Size Type 10 External Mounting Single Point Level Switch, 11/16'' Diameter
Gems Sensors 165800 Polypropylene Float Small Size Type 10 External Mounting Single Point Level Switch, 11/16" Diameter
In Stock
$51.92
$39.00
You Save: 25%

mpn: 165800,

Gems Polypropylene float single point level switch with type 3 internal mounting. Ls-7 series compact side mounts are the solution to many small tanks. These low-cost units are ideal for high volume use in small tanks and vessels. Engineered plastics...


Dwyer Flotect Series V10 Mini-Size Flow Switch, Brass Housing, Normally Open or Closed, Pressure Range 0-1000 psig, 1/2'' Male NPT
Dwyer Flotect Series V10 Mini-Size Flow Switch, Brass Housing, Normally Open or Closed, Pressure Range 0-1000 psig, 1/2'' Male NPT
SKU: #V10
In Stock
$46.50

sku: V10, mpn: V10,

Designed to provide an inexpensive, reliable unit to monitor the presence or absence of flow in a system. The V10 flow switch is used to monitor unattended equipment and protect it from costly damage. The V10 flow switch utilizes a rugged, hermetical...


Gits 1637-037804 Style 1637 Breather Vent, 3/8-18 NPT Filtered Breather Vent
Gits 1637-037804 Style 1637 Breather Vent, 3/8-18 NPT Filtered Breather Vent
In Stock
$11.95

mpn: 1637-037804,

This popular style offers greater filtered air flow with better protection against clogging from dirt accumulating on the equipment. The design incorporates more vent ports and they are located higher on the body of the unit for greater clearance. Th...


Dwyer Flotect Series V6 Mini-Size Flow Switch, Brass Upper and Lower Housing, SPDT Snap Switch, 1-1/4'' NPT Process Connection, Brass Tee
Dwyer Flotect Series V6 Mini-Size Flow Switch, Brass Upper and Lower Housing, SPDT Snap Switch, 1-1/4" NPT Process Connection, Brass Tee
In Stock
$197.50
$189.99
You Save: 4%

mpn: V6EPB-B-S-4-B,

Surprisingly compact, the Series V6 Flotect® Flow Switch is engineered to specifically monitor liquid, gas, or air flows. Operation is simple and dependable with no mechanical linkage as the flow switch is magnetically actuated. The lower body holds...


Gems Sensors 3R1C0 316 Stainless Steel General Purpose Probe, 1/4'' NPT Male, 1' Length
Gems Sensors 3R1C0 316 Stainless Steel General Purpose Probe, 1/4" NPT Male, 1' Length
In Stock
$16.80

mpn: 3R1C0,

Gems probes are metallic rods with threaded ends that screw into a fitting that extends vertically down into the liquid. Series 3R: 1/4" (0.64 cm) threaded rod. 1' probe length. 1/4" NPT male.Series 3R probes are metallic rods with threaded end. For ...


Gems Sensors 162745 Buna N Float Single Point Highly Reliable Compact Level Switch, 1'' Diameter, 1/8'' NPT Male, 13/16'' Actuation Level
Gems Sensors 162745 Buna N Float Single Point Highly Reliable Compact Level Switch, 1" Diameter, 1/8" NPT Male, 13/16" Actuation Level
In Stock
$35.00

mpn: 162745,

Gems Buna-N float single point level switch. Offers high reliability, compact size and low cost. Ideal for shallow tanks or restricted spaces, or for any low-cost, high volume use. Stem and mounting made of nylon. Ideal for oils and fuels. 13/16" act...


Cim-Tek 60002 Locking Pre Vent Cap
Cim-Tek 60002 Locking Pre Vent Cap
In Stock
$34.54
$20.27
You Save: 41%

mpn: 60002, ean: 0662537600025,

60002 The Cim-Tek Locking Pre-Vent pressure cap is a original patent design for use on small above ground farm tanks, commercial gasoline tanks, distillate tanks, fuel transfer tanks, small oil storage tanks, and industrial oil transfer tanks. The Pr...


McDonnell & Miller FS4-3 General Purpose Liquid Flow Switch
McDonnell & Miller FS4-3 General Purpose Liquid Flow Switch
In Stock
$101.33

mpn: 114400, ean: 0751875000274,

Used for starting or stopping electrically operated equipment such as signal lights, alarms, motors, automatic burners and metering devices. 1" NPT connection, single pole, double throw switching. Sealed Monel Bellow. Two electrical knock-outs allows...


MCDONNELL & MILLER 42SHD HEAD MECHANISM NEW NO BOX
MCDONNELL & MILLER 42SHD HEAD MECHANISM NEW NO BOX
In Stock
$613.00

mpn: knox70011631-42SHD,

MCDONNELL & MILLER 42SHD HEAD MECHANISM * NEW NO BOX *...


Altech KEM3150L Y/R , Switch, Motor Disconnect, Enclosed, 150AMP, MF11 Enclosure Size
Altech KEM3150L Y/R , Switch, Motor Disconnect, Enclosed, 150AMP, MF11 Enclosure Size
In Stock
$573.22
$573.13

mpn: KEM3150L Y/R, ean: 0642008211028,

Enclosed Motor Disconnect Switches can be used locally at the motor. Available with black handle or in yellow/red handle (use suffix Y/R). Four-pole versions available upon request.Altech KEM3150L Y/R. Switch, Motor Disconnect, Enclosed, 150AMP, MF11...


ASCO RF10A44 316 Stainless Steel Corrosive Fluid Transducer for P Series Pressure Switch, 316 Stainless Steel Sealing
ASCO RF10A44 316 Stainless Steel Corrosive Fluid Transducer for P Series Pressure Switch, 316 Stainless Steel Sealing
By Asco
In Stock
$525.72

mpn: RF10A44,

Transducer unit incorporates a diaphragm/piston type pressure sensor, and is also a fully-tested, self-contained subassembly.Material: 316 Stainless Steel. For P Series Pressure Switch. 316 Stainless Steel sealing. ...


Dwyer Liquid Flow Controller, TSP110, PP Wetted Parts, 0.7'' (1.8 cm) Sensor
Dwyer Liquid Flow Controller, TSP110, PP Wetted Parts, 0.7" (1.8 cm) Sensor
In Stock
$691.90

mpn: TSP110,

Protect pumps and valves from dry running with the Series TSP Liquid Flow Controller. The Series TSP combine a liquid flow switch with a fail-safe relay controller to detect a flow or no flow situation and provides switching for direct actuation of p...


Dwyer Liquid Flow Controller, TSP120, PP Wetted Parts, 2.1'' (5.3 cm) Sensor
Dwyer Liquid Flow Controller, TSP120, PP Wetted Parts, 2.1" (5.3 cm) Sensor
In Stock
$703.90

mpn: TSP120,

Protect pumps and valves from dry running with the Series TSP Liquid Flow Controller. The Series TSP combine a liquid flow switch with a fail-safe relay controller to detect a flow or no flow situation and provides switching for direct actuation of p...


Fill-Rite FR102PHU Remote Pedestal Nozzle Hook, UL/cUL Listed, Red
Fill-Rite FR102PHU Remote Pedestal Nozzle Hook, UL/cUL Listed, Red
In Stock
$999.00

mpn: FR102PHU, ean: 0089404224465,

This attractive remote pedestal with nozzle hook is a great addition to your fleet or company fueling area. The Fill-Rite FR102PHU pedestal provides clean, simple remote switching for your pump, convenient hose storage, and a heavy duty nozzle boot. ...


Fanuc Robotics A05b-1405-K314 Cpl Camera Cable Kit 3.5 Meters A05b-1405-K314
Fanuc Robotics A05b-1405-K314 Cpl Camera Cable Kit 3.5 Meters A05b-1405-K314
In Stock
$609.39

mpn: A05B-1405-K314,

Fanuc Robotics A05b-1405-K314 Cpl Camera Cable Kit 3.5 MetersWeight: 1.67lb. Product Dimensions: 12.00 x 12.00 x 8.00 inches. Condition: New. ...


ASCO TA31A11 Aluminum Air/Gas Replacement Pressure Transducer for S Series Pressure Switch, Nitrile Butylene Sealing
ASCO TA31A11 Aluminum Air/Gas Replacement Pressure Transducer for S Series Pressure Switch, Nitrile Butylene Sealing
By Asco
In Stock
$742.40

mpn: TA31A11,

Transducer unit incorporates a diaphragm/piston type pressure sensor, and is also a fully-tested, self-contained subassembly.Material: Aluminum. Nitrile Butylene Sealing. For S Series Pressure Switch. ...


Genuine Branson OEM Size 6 Cooled, Sealed Atm. Chamber, 25-50 ml (Branson part# 101-021-006)
Genuine Branson OEM Size 6 Cooled, Sealed Atm. Chamber, 25-50 ml (Branson part# 101-021-006)
In Stock
$690.00

mpn: 101-021-006,

This is a standard ultrasonic cooled size 5 chamber.This part is fully compatible with Branson, Telsonic, Sonics and Materials, Misonix,and Dukane etc. machinery.. Electropolished for high quality finishing.. Proudly Made in USA. Material: high grade...


Genuine OEM Branson Size 4 Cooled, Sealed Atm. Chamber, 3-10 ml (Branson part# 101-021-004)
Genuine OEM Branson Size 4 Cooled, Sealed Atm. Chamber, 3-10 ml (Branson part# 101-021-004)
In Stock
$690.00

mpn: 101-021-004,

This is a standard ultrasonic cooled size 4 chamber.This part is fully compatible with Branson, Telsonic, Sonics and Materials, Misonix,and Dukane etc. machinery.. Electropolished for high quality finishing.. Proudly Made in USA. Material: high grade...



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