








💧 Flow smart, switch sharp — never miss a beat in your fluid control!
The HFS-25 1"/DN25 SPDT Water Switch is a precision liquid flow sensor designed for professional-grade fluid dynamics monitoring. Featuring a durable stainless steel paddle and IP65 protection, it reliably triggers circuit switching at set flow thresholds up to 15 amps and 380 volts. Compact and corrosion-resistant, it integrates seamlessly into water treatment, HVAC, and fire safety systems, ensuring efficient and fail-safe operation in critical industrial applications.








| ASIN | B07Q5ZD8WC |
| Actuator Type | Hinge Lever |
| Best Sellers Rank | #173,999 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #26 in Flow Switches |
| Brand | YWBL-WH |
| Circuit Type | multi-way |
| Connectivity Protocol | X-10 |
| Connector Type | Screw |
| Contact Material | Stainless Steel |
| Contact Type | Normally Open |
| Control Method | Touch |
| Control Type | ON-OFF |
| Current Rating | 15 Amps |
| Date First Available | April 2, 2019 |
| International Protection Rating | IP65 |
| Item Weight | 1.14 pounds |
| Item dimensions L x W x H | 3.35 x 2.56 x 4.92 inches |
| Item model number | YWBL-WHy7wxqc2410 |
| Manufacturer | YWBL-WH |
| Number of Positions | 1 |
| Operating Voltage | 380 Volts |
| Operation Mode | ON-OFF |
| Product Dimensions | 3.35 x 2.56 x 4.92 inches |
| Terminal | Spdt |
| UPC | 747333419603 |
| Unit Count | 1.0 Count |
| Wattage | 3300 watts |
S**E
Doing the job
I was surprised to actually find this on Amazon. Amazon is really great and changing life to a better way. I have a project where I have a water pick-up pump that is feeding a high pressure sending pump. The high pressure pump needs to work only when water is flowing to an electric side valve. In case the pick up pumps fails, I need the system to shutdown. I was thinking about the possible solutions and technologies and I found this one on Amazon. Also, smart Amazon suggested getting a timer with this. I didn't know I'd need it but it was a good advice. It has been a while since I installed everything. System is working as expected. No issues and very good set of blades to set the flow intensity and the pipe size.
G**Y
Me agrado el surtido de paletas; la capacidad de manejo de corriente de los contactos. Bajo perfil y para tubería de una pulgada, permitió instalación sin adaptadores el lugar apretado.
H**.
Worked, Sort Of
Sturdy, and made of stainless steel. The placement of this switch must be well thought out, as it didn't work where we wanted to use it in our plumbing project.
B**B
Not a NPT thread some British thread type
I’m sure it would work great if it were the right thread type. Based on measurements it is some type of British thread
Trustpilot
2 weeks ago
2 weeks ago