Need an installer?We made it easy for you.
Listed installers are independent contractors, not MBTEK employees. They're skilled professionals familiar with our products and capable of efficient installation.

1 / 6
General-Purpose Flow Protection
Adjustable non-mechanical thermal-dispersion flow protection for pool and general industrial water circuits.
Shipping$80Free
Need help choosing?
APOLLO Pool Flow SwitchHigh-performance thermal dispersion flow switch designed to provide reliable flow proving without moving parts, pressure drop, or the frequent failures common with traditional paddle-style flow switches.
Compare to Dwyer TDFS2-1-P-06, Fluid Components FCI FLT 93, Omega FSW-433, Johnson Controls F261KEH-V01C, Taco IFS01BF-1 / IFS01BR-1, Caleffi 626600A, McDonnell & Miller FS1 / FS1-J, Watts FS-204W, Siemens QVE1900U, Hydrolevel FS200 / FS204.
| Type | Non-mechanical thermal-dispersion, no moving parts |
|---|---|
| Setpoint range | Adjustable 0.2–10 GPM |
| Status indicators | 6 LED |
| Relay output | 5A contact rating |
| Power | 12–24VAC/DC |
| Connection | 1/2" NPT |
| Max pressure | 1500 PSI |
| Temperature range | -5°F to 200°F |
| Warm-up time | 10 seconds |
| Response time | 1–3 seconds |
| Protection | Thermal cut-off for empty-pipe conditions |
Verified Google reviews from MBTEK customers across our heating and hydronic product lines.
Loading reviews…
Need an installer?We made it easy for you.
Listed installers are independent contractors, not MBTEK employees. They're skilled professionals familiar with our products and capable of efficient installation.
Any questions?Reach out to us.
Our team can help with product questions, sizing guidance, and next steps.