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INS-FS02 Coolant Flow Switch, Stainless Steel

Part No. INS-FS02 In-Stock Icon In Stock Fedex orders placed now will ship on May 28th.
Volume Pricing
Qty 1 : $60.49/ea
10 : $57.89
25 : $55.29
50 : $52.69
100 : $51.91
250 : $50.61
500+ : $49.83
RoHS CertifiedREACH Certified
Add Related Products BSPP Fittings

Koolance's inline flow switch provides a simple electronic confirmation of coolant flow. The switch will close if the flow rate stays above 2.0LPM / 0.53GPM (+/-10%), and opens when below. Fitting threads are G 1/4 BSPP, and the primary materials are stainless steel and nickel-plated brass. Wire length is about 28" (70cm). It is recommended to keep current through the flow switch at 10mA or less to prevent damage.


Weight 0.18 lb (0.08 kg)
Fitting Thread G 1/4 BSPP
Max Pressure Tolerance @ 25°C 10kgf/cm2 (142.2psi)
Max Temperature Tolerance 80°C (176°F)
Min Storage Temperature (*No Freezing) -30°C (-22°F)
Wetted Materials Nickel-Plated Brass, Stainless Steel, POM Acetal, Neodymium
Diagrams / Models (See Files Tab for Diagrams and 3D Models)

Diagram - ins-fs02_d1.pdf

Liquid Coolants

Koolance's product warranty does not cover the use of 3rd-party coolants, coolant additives, or corrosion. Koolance LIQ-702 or LIQ-705 coolants are strongly recommended to help avoid issues with mixed metals or biological growth. Additionally, do not use aluminum with bare (unplated) copper or bare (unplated) brass in the same system. Do not use silver with nickel in the same system.