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Flow Sensors - 584 - Extreame Savings! Save up to 50%


Extreame Savings! Up to 50% off on Flow Sensors at In The National Interest. Top brands include Supco, Gems Sensors, DIGITEN, Baomain, EcoSmart, Uniweld, Dixon Valve & Coupling, Dwyer, Gems, & Onset. Hurry! Limited time offers. Offers valid only while supplies last.



Supco DAVM+ Digital Air Flow Meter, Vane Anemometer, Thermometer, Hygrometer, Light Meter
Supco DAVM+ Digital Air Flow Meter, Vane Anemometer, Thermometer, Hygrometer, Light Meter
SKU: #12464
In Stock
$196.25
$142.97
You Save: 27%

sku: 12464, mpn: DAVM+, ean: 0696730798722,

The Supco DAVM+ digital air flow meter combines a vane anemometer, thermometer, hygrometer, and light meter for measuring air velocity in m/s, fpm, knots, mph, and km/h, air flow volume in cfm and cmm; air temperature in degrees C and F; humidity in ...


Gems Sensors FS-400P Series PVC Flow Switch, Elbow, Shuttle Type, 0.5 gpm Flow Setting, 3/4'' IPS
Gems Sensors FS-400P Series PVC Flow Switch, Elbow, Shuttle Type, 0.5 gpm Flow Setting, 3/4" IPS
In Stock
$83.00

mpn: 135810,

FS-400P Series – Low Cost Units for Plastic Piping. Designed for low cost flow/no-flow monitoring. This series is available with a clear transparent PVC housing which is ideal for use where visual flow confirmation is desirable. These corrosion-res...


DIGITEN G3/4'' Water Flow Hall Sensor Switch Flow Meter Flowmeter Counter 1-60L/min
DIGITEN G3/4" Water Flow Hall Sensor Switch Flow Meter Flowmeter Counter 1-60L/min
In Stock
$15.99
$13.99
You Save: 13%

mpn: FL-803, ean: 0713458679499,

Waterproof,Heat resistance,pressure resistance,cold resistance. Easy to install. Frequency: F=5.5 * Q (L / Min), error:2% voltage :3.5-24VDC, current can not exceed 10mA, 330 pulses/liter, F=onstant * units of flow (L / min) * time (seconds). Flow...


Gems Sensors FS-380 Series Brass High Pressure Flow Switch, Inline, Piston Type, 0.5 gpm Flow Setting, 1/2'' NPT Male
Gems Sensors FS-380 Series Brass High Pressure Flow Switch, Inline, Piston Type, 0.5 gpm Flow Setting, 1/2" NPT Male
In Stock
$113.00
$110.20
You Save: 2%

mpn: 192563,

FS-380 Series - Compact Flow Switch for High Inline Pressures. These rugged inline flow switches use 100 micron filtration and are less susceptible to clogging than other high-pressure inline flow switches. The one-piece magnetic PPS composite piston...


DIGITEN G1-1/2'' 1.5'' Water Flow Hall Sensor Switch Meter Flowmeter Control 10-150L/min
DIGITEN G1-1/2" 1.5" Water Flow Hall Sensor Switch Meter Flowmeter Control 10-150L/min
In Stock
$53.99

mpn: FL-1208, ean: 0713458679475,

Waterproof,Heat resistance,pressure resistance,cold resistance. Easy to install. Flow range:10-150L/min Sensor:Hall effect Maximum current:15 mA(DC 5V) Working voltage range:DC 5¡«18 V Load capacity:¡Ü10 mA(DC 5V) Operating Temp:¡Ü80¡æ...


Baomain Paddle Flow Control Switch HFS-25 Red AC 250V 15A SPDT G1'' Cooling System Water
Baomain Paddle Flow Control Switch HFS-25 Red AC 250V 15A SPDT G1" Cooling System Water
In Stock
$15.99

mpn: HFS-25,

Screw terminal connection, male thread, plastic coated housing, paddle type. Can be mounted with a horizontal pipe line or vertical pipeline for the air conditioner. Used in liquid flow lines carrying water or any fluid, not harmful to brass or phosp...


DIGITEN G1'' Water Flow Hall Effect Sensor Switch Flow Meter Flowmeter Counter 1-60L/min
DIGITEN G1" Water Flow Hall Effect Sensor Switch Flow Meter Flowmeter Counter 1-60L/min
In Stock
$10.99

mpn: FL-808, ean: 0713458679482,

Waterproof,Heat resistance,pressure resistance,cold resistance. Easy to install. Frequency: F=4.8 * Q (L / Min) error:2% voltage :3.5-24VDC, current can not exceed 10mA, 450 output pulses/liters, F=onstant * units of flow (L / min) * time (seconds)...


Ecosmart FSA QC MEDLRG Flow Sensor
Ecosmart FSA QC MEDLRG Flow Sensor
In Stock
$18.84

mpn: FSA QC MEDLRG, ean: 0854920003203,

Flow Sensor for Eco smart Electric Tank less water heaters. Used with ECO 8 and ECO 11 models. Contact Eco smart for more information.Flow Sensor assembly for ECO 18 - ECO 36. ECO 18, ECO 24, ECO 27, ECO 36. Contact Eco smart for questions. ...


Ecosmart FSA NFSML Flow Sensor
Ecosmart FSA NFSML Flow Sensor
In Stock
$15.12

mpn: FSA NFSML, ean: 0854920003197,

Flow Sensor for EcoSmart Electric Tankless water heaters. Used with ECO 8 and ECO 11 models. This is a replacement part.Flow Sensor Assembly for ECO 8 & ECO 11. Models : ECO 8, ECO 11. Contact EcoSmart for questions. ...


Uniweld NV1 NitroVue Nitrogen Flow Indicator
Uniweld NV1 NitroVue Nitrogen Flow Indicator
In Stock
$47.50
$43.95
You Save: 7%

mpn: NV1, ean: 0688456140404,

Uniweld's NV1 NitroVue Nitrogen Flow Indicator is nitrogen purging simplified. The easy to read flow indicator label and the precision adjustable valve give complete control over the low flow of nitrogen gas during the brazing of copper tubing in Air...


Dixon A200CA3P25 ADS Spillguard Cable, 316 Stainless Steel with  5 Pin Connector, 25' Cable
Dixon A200CA3P25 ADS Spillguard Cable, 316 Stainless Steel with 5 Pin Connector, 25' Cable
In Stock
$516.49

mpn: A200CA3P25,

The Dixon A200CA3P25 ADS Spillguard Cable with 5 Pin Connector is made to be used with Dixon Spillguard products. It is made with 316 stainless steel and has a 5 pin connector.25' Cable. Made of 316 Stainless Steel. 5 Pin Connector. ...


Dixon A200CA3P50 ADS Spillguard Cable, 316 Stainless Steel with  5 Pin Connector, 50' Cable
Dixon A200CA3P50 ADS Spillguard Cable, 316 Stainless Steel with 5 Pin Connector, 50' Cable
In Stock
$799.35

mpn: A200CA3P50,

The Dixon A200CA3P50 ADS Spillguard Cable with 5 Pin Connector is made to be used with Dixon Spillguard products. It is made with 316 stainless steel and has a 5 pin connector.50' Cable. Made of 316 Stainless Steel. 5 Pin Connector. ...


Dixon ADS12GR ADS 12'' Gauge Rod, Two Piece, 1/2'' x .065 Weight Hardened 316 Stainless Steel
Dixon ADS12GR ADS 12" Gauge Rod, Two Piece, 1/2" x .065 Weight Hardened 316 Stainless Steel
In Stock
$893.67

mpn: ADS12GR,

The Dixon ADS12GR ADS 12" Gauge Rod is used to gauge liquid levels in any mobile tank. It has a laser engraved scale with 1/4" graduations, rods that come in to two sections that screw together at the midpoint, foot marks are inscribed on the rod at ...


Dwyer MIDWEST Series SFI-100 Sight Flow Indicator, Single Window, Bronze Body, 316 Stainless Steel Impeller, 1'' Female NPT Connections, PTFE Gasket, 5.688'' Length x 3.250'' Depth x 3.625'' Height
Dwyer MIDWEST Series SFI-100 Sight Flow Indicator, Single Window, Bronze Body, 316 Stainless Steel Impeller, 1" Female NPT Connections, PTFE Gasket, 5.688" Length x 3.250" Depth x 3.625" Height
In Stock
$410.04
$204.78
You Save: 50%

mpn: SFI-100-1-G1-I2,

4.2 out of 5 stars with 15 reviews
Series 100 and 300 Sight Flow Indicators are manufactured of quality materials and safety tested to assure long, dependable service at economical prices. The 100 and 300 Series offer threaded process connections, viewing windows, and bodies of brass ...


Gems 67A1C0A 67 Series Multi-Function Duplex Pump System Control, 4.7K Direct Operation, N.O. and N.C. Common without Enclosure and Circuit, 120 VAC
Gems 67A1C0A 67 Series Multi-Function Duplex Pump System Control, 4.7K Direct Operation, N.O. and N.C. Common without Enclosure and Circuit, 120 VAC
By Gems
In Stock
$807.27

mpn: 67A1C0A,

Warrick's series 67 four channel level control is an ideal solution to liquid level problems in hazardous applications for the sewage, waste water, chemical and groundwater remediation industries. Connected to floats or conductance probes this versat...


Onset T-DCI-F900-L-O, Air Velocity Sensor
Onset T-DCI-F900-L-O, Air Velocity Sensor
In Stock
$510.71

mpn: T-DCI-F900-L-O,

The F900 L-O Airflow Sensor is designed to measure the velocity of airflows in applications such as HVAC, industrial processes, automotive, air filtration systems, electronics enclosures and critical containment areas....


Onset T-DCI-F900-L-P, Air Velocity Sensor
Onset T-DCI-F900-L-P, Air Velocity Sensor
In Stock
$510.71

mpn: T-DCI-F900-L-P,

The F900-L-P Airflow Sensor is designed to measure the velocity of airflows in applications such as HVAC, industrial processes, automotive, air filtration systems, electronics enclosures and critical containment areas....



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