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Under $20 Flow Meters & Controllers

Shop the best prices on 4,804 great value under $20 flow meters & controllers. Shopping for flow meters & controllers is easy with Fruugo, with SALE discounts, offers and savings on Ydcy, Asiv, Lichifit and more. Buy flow meters & controllers online safely with Fruugo, with secure payment and fast shipping to Singapore.

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1 - 32 of 4,804
JR-A568-5B Hall Water Flow Sensor Switch for Instant Electric Water Heater Accessories Lichifit
$19.95 Save $3.00 RRP: $22.95
Water Flow Switch Water Flow Control Sensor Stable Precision Controller
$18.95 Save $45.05 RRP: $64.00
MAF Mass Air Flow Sensor Meter AF10043 for Yukon XL 1500 Sierra Escalade Silverado Suburban 1500 2500 Tahoe - Replaces 25168491 25318411
$20.95 Save $21.00 RRP: $41.95
Digital Water Flow Meter IPX6 Outdoor Garden Hose Water Calculate Consumption Water Flow Rate 3/4inc
$21.95
Accurate Gas Flow Meter for Argon and CO2, Simplified Design for Practical Use
$10.95 Save $6.00 RRP: $16.95
1Pcs Water Flow Sensor DN25 DC3.5-24V 1 Inch 2-100L/Min Hall Flowmeter Heat Pump Water Heater Flow
$18.95
2025 Portable Peak Flow Meter for Asthma & Lung Function - Personal PEF Spirometer
$11.95 Save $23.00 RRP: $34.95
Portable Spirometer Peak Flow Meter Meter Expiratory Flow for Lung Asthma Detector Breath Function Monitor for Adult
$18.95 Save $21.00 RRP: $39.95
2025 Portable Peak Flow Meter for Asthma & Lung Function - Personal PEF Spirometer
$21.95 Save $42.05 RRP: $64.00
for Lay Z Spa Water Flow Sensor airjet hydrojet fix E02 Code, Flow Sensor FIX E02 for Spa Lay Z AirJet hwy
$14.95
Portable Spirometer Peak Flow Meter Meter Expiratory Flow For Lung Asthma Detector Breath Function M
$9.95 Save $9.00 RRP: $18.95
2025 New Protable Personal Spirometer Peak Flow - Expiratory Flow Meter - Spirometry Lung Function
$13.95 Save $3.00 RRP: $16.95
Acrylic Variable Area Flow Meter for Gas, 0.1-1L/MIN, Adjustable Panel Mount Rotameter for Air Flow Rate Monitoring
$20.95 Save $13.00 RRP: $33.95
DN25 Flow Sensor Turbine Flow Meter Water Flow Sensor Industrial
$16.95 Save $3.00 RRP: $19.95
Water Flow Sensor Switch G1/4in Male Thread PP Plastic for Water Purifier, DC 0-110V Flow Control Valve Durable
$13.95
Portable Spirometer Peak Flow Meter Meter Expiratory Flow for Lung Asthma Detector Breath Function Monitor for Adult-YuJia
$20.95 Save $7.00 RRP: $27.95
Dc 24v 250w Motor Speed Brush Controller For Electric Bicycle Bike Scooter
$17.95 Save $13.00 RRP: $30.95
Liquid Flowmeter Fluidmeter Counter for Water Purifiers Water Dispenser G1/4 DN8 Water Flow Meter Hall Effect Sensors
$20.95
Voltage Meter 2 Wire 0.28" for DC 2.5~30V Digital Voltmeter Gauge Tester Red LED Display Panel Mount Car Motorcycle Batt Red
$14.95
12 Volt Digital Voltmeter Car Volt Meter Car Battery Vehicle Battery And Voltmeter Electric Cigarette Lighter
$18.95
1-60L/Min DC 3.5-24V Hall Effect Water Flow Sensor Counter Meter
$16.95
Lzq-7 Oxygen Flowmeter 3-30lpm Flow Meter With Valve For Oxygen Air Gas
$14.95 Save $8.00 RRP: $22.95
RV Water Heater Flow Sensor with Temperature Monitoring, Water Flow Meter for Home Heating System
$14.95 Save $8.00 RRP: $22.95
Dn25 Fs400a G1inch Water Flow Sensor Hall Flowmeter Meter Counter 1-60l/min 1.2mpa
$20.95 Save $10.00 RRP: $30.95
Stainless Steel Manifold To Replace The Flow Meter For Floor Heating Water Separator Accessories
$14.95 Save $8.00 RRP: $22.95
LZS-25 Flow Meter Plastic Tube Type 300-3000L/H Water Flowmeter
$16.95
PC Water Cooling Flowmeter Arcylic + Impeller Aluminum Metal Armor G1/4Inch Thread, Red LSJ-JX1
$19.95 Save $4.00 RRP: $23.95
Water Flow Sensor RV Water Heater for GSWH-2
$18.95
Argon Co2 Gas Flow Meter Peashooter Scale Tester Measure
$5.95 Save $1.00 RRP: $6.95
1-60L/Min DC 3.5-24V Hall Effect Water Flow Sensor Counter Meter FS300A
$17.95 Save $1.00 RRP: $18.95
Digital Counter Module DC/AC5V-24V Hour Meter Mini Calculator Electronic Totalizer with NPN and PNP Signal Interface
$17.95
Water Flow Sensor airjet hydrojet compatible with Lay Z Spa fix E02 Code unbrand
$9.95 Save $24.00 RRP: $33.95