

Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The HARWIL Q8DSA10566 is a heavy-duty flow switch rated for 15 amps with a 1-inch male pipe thread (MPT) connection. Flow switches detect the presence or absence of liquid movement in a pipeline and trigger downstream controls such as pumps, alarms, or shutoff systems. This unit is built for demanding water flow monitoring in commercial and industrial piping systems. The 1-inch MPT port allows direct threaded installation into standard pipe fittings without adapters in most configurations. Its construction is suited to resist chemical exposure, corrosion, and mechanical wear for long service life in wet environments.
The Q8DSA10566 is well suited for commercial HVAC hydronic systems, pool and spa circulation lines, industrial process piping, and irrigation controls where reliable flow detection is required. The 15-amp rating supports direct switching of motors, contactors, and control circuits without requiring an intermediate relay in many standard applications. Licensed plumbers, HVAC mechanics, and pool service technicians are the primary installers of this type of component.
Designed as an OEM-style replacement or direct-install flow switch for 1-inch MPT threaded piping systems in commercial HVAC, pool, spa, and industrial process applications.
Installation should be performed by a licensed plumber, HVAC technician, or qualified pool service professional in accordance with applicable local codes. Shut off water flow and depressurize the line before threading the switch into the pipe. Use appropriate thread sealant or PTFE tape on the MPT threads to prevent leaks. De-energize any connected electrical circuits before making wiring connections to the switch terminals.
Thanks for subscribing!
This email has been registered!