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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
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
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
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
Ac100-250v Electromechanical Hour Meter Counter-yu
$17.95 Save $8.00 RRP: $25.95
Mass Air Flow Sensor 31342521 for 20082015
$15.95 Save $23.00 RRP: $38.95
Water flows Switches with 1L/ Sensing Simple Installs for Heat Pump Systems SZRH
$18.95 Save $31.00 RRP: $49.95
Water Flow Indicator Measuring Tool Practical 8-blade Impeller Connecter Water unbrand
$7.95 Save $5.00 RRP: $12.95
Flow Sensor G1/2'' Water Flow Hall Sensor Switch 1-25L/min Flow Meter Flowmeter
$19.95
Compressed Air Connection, Compressed Air Distributor, Compressed Air Switch, with 1/4 Inch Connecti
$14.95 Save $25.00 RRP: $39.95
New Car Air Flow Meter Sensor 226804M500 226804M50A 22680-4M500 22680-4M50A For Nissan
$20.95 Save $32.00 RRP: $52.95
Plastic Flowmeter Tube Water Rotameter Short Tube Liquid Measuring Tool
$22.95 Save $81.05 RRP: $104.00
Multifunctional 2 Points PE Pipe Water Flow Sensor Hall Flowmeter G 1/4" Fast Connection Interface
$20.95
Upgrades Flowmeter Counter Liquid Meter Liquid Flowmeter Counter Meter for Water Dispensing System
$20.95
High Precisions Coffee Water Meter small Liquid Flowmeter Counter Flowmeter Counter for Dispensers
$20.95
Water Flow Switch FS-10 100V High Precision Level Sensor Adjustable Control Float
$15.95 Save $68.05 RRP: $84.00
Mass Air Flow Sensor MAF Air Flow Meter 22680-7S000 Compatible with Nissan Vehicles for Optimal Engine Performance
$18.95 Save $9.00 RRP: $27.95
YFS201 Water Flow Hall Meter 130L/min Water Control Sensor Water Flow Rate
$20.95 Save $11.00 RRP: $31.95
Ultech Portable Spiter Flow Meter Meter Expiratory Flow For Lung Asthma Detector Funct Mon For Adult
$21.95
PEACEFAIR 100A Voltage Current Power Factor Frequency Energy Meter (1*Meter 1* Closed type CT)
$20.95 Save $21.00 RRP: $41.95
Water Flow Switch Water Flow Control Sensor Precision Switch Stable
$17.95 Save $71.05 RRP: $89.00
0.1-1.5LPM 1.5L Oxygen Flow Meter Flowmeter with Control Valve for Oxygen Air
$15.95 Save $4.00 RRP: $19.95
Digital Water Flow Meter IPX5 Measure Water Consumption and Flow Rate for Outdoor Garden Watering Irrigation Hose
$20.95 Save $48.05 RRP: $69.00