Harwil Flow Switch [1/2"Thd] [Q12DS Kit] [Hubble Fitting & 1/2"Cplr] (Q12DS501.54SNO1)
| Electrical: Switches | |
| Harwil | |
| Q12DS501-54SNO1 | |
| 26-578-1100 |
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A flow switch helps verify water movement in a compatible system so connected equipment can respond appropriately when flow is present, and this Harwil version is a Q12DS kit with a 1/2 inch threaded connection, Hubble fitting, and 1/2 inch coupler using the Q12DS501.54SNO1 reference. Kits like this are useful when a complete flow-switch setup is preferred over sourcing multiple installation pieces separately.
This package has practical value because it combines the switch with related connection hardware, helping simplify installation planning and replacement work. A properly selected Harwil flow switch kit helps support cleaner service, more dependable flow verification, and easier restoration of the original control behavior.
This type of part is especially useful when servicing systems that depend on accurate flow confirmation for safe operation and the original switch assembly needs a more complete replacement solution. That helps keep repairs organized and more dependable.
Installed in the proper application, this flow switch kit helps support reliable flow detection and cleaner overall control integration.
- Q12DS flow switch kit with 1/2 inch threaded connection
- Includes Hubble fitting and 1/2 inch coupler
- Helps verify water movement in compatible systems
- Useful when replacing a complete flow-switch assembly
- Improves installation convenience and service confidence
Harwil – Flow Switches, Sensors and Pool & Spa Control Components |
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Who is Harwil?
Harwil Corporation is a leading manufacturer of flow switches and control instrumentation used in water treatment, HVAC, and pool and spa systems. With over 65 years of experience, Harwil is known for precision-engineered components that help monitor and regulate water flow in critical applications. Their products are widely used to ensure safe and efficient operation of pumps, heaters, and filtration systems. What products does Harwil specialize in?Harwil specializes in flow switches, flow sensors, level switches, and control components. Their product lineup includes devices designed to detect water flow and trigger system responses, such as activating heaters or shutting down equipment to prevent damage. These components are essential for maintaining proper system operation and protecting equipment. Why choose Harwil parts for your pool or spa?Harwil products are known for accuracy, durability, and dependable performance in demanding environments. Their flow switches help ensure that equipment operates only when proper water flow is present, reducing the risk of overheating or system failure. Professionals choose Harwil for reliable control components that improve safety and extend equipment life. How do you identify and choose the correct Harwil part?To select the correct Harwil component, it’s important to match specifications such as flow rate, connection type, voltage, and system compatibility. Reviewing part numbers and installation requirements ensures proper fit and performance. Choosing the right flow switch helps maintain safe operation and efficient system performance. Need help finding the right Harwil part?At Bath & Spa Parts Online, we carry a wide selection of Harwil pool, spa, and bath parts ready to ship. Can’t find what you need? Contact our Product Specialists at 800-918-9143, use the live chat, or visit our Contact Us page. For installation guides, part diagrams, and troubleshooting resources, visit the Bath & Spa Parts Online Knowledge Base for expert support. |
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