Skip to content
Manage your account
Track orders, manage your details, and sign in without a password.
- No password required
- We send a secure 6-digit code to your email
- New email? Signing in creates your account automatically
Stay Cool This Summer - 20% OFF Free Shipping 00d : 00h : 00m : 00s
APOLLO Pool Flow Switch
Need help choosing?
Order online
Or call us for a complete-system quote and volume pricing.
20% OFF
$174
$139
Secure checkout · Free shipping
- Non-mechanical flow detectionDetects liquid flow without a mechanical paddle.
- Broad application coverageBuilt for boilers, heaters, chillers, and liquid transfer systems.
- Simple control integrationRelay output and low-voltage power keep installation straightforward.
- High-pressure durabilityRated for up to 1500 psi and -5°F to 200°F operation.
- Empty-pipe protectionThermal cut-off protection helps safeguard the sensor.
Industrial Flow Switch
Main Features
-
Non-Mechanical Operation
Thermal dispersion technology with no moving parts and no pressure drop.
-
Adjustable Flow Detection
User-adjustable setpoint from 0.2 to 10 GPM for flexible system control.
-
Visual Status Indication
Integrated LED indicators provide clear flow status and switch condition.
-
Multi-System Compatibility
Suitable for boilers, water heaters, chillers, and liquid transfer systems.
-
Built for harsh operating conditions
Rated for working pressures up to 1500 psi and operating temperatures from -5°F to 200°F.
-
Thermal cut-off protection
Includes protection for empty-pipe conditions to help safeguard the sensor during abnormal system states.
No Moving Parts
Non-mechanical design eliminates moving components, reducing wear and maintenance requirements.
Adjustable Setpoint
Flow detection can be adjusted between 0.2 and 10 GPM using the included adjustment tool.
Visual LED Indication
Includes 6 LED indicators to display flow status and switch operation.
Flexible Installation & Use
Designed for use in boilers, hot water systems, chillers, and liquid transfer applications, with standard 1/2" NPT connection.
Technical specifications
Core operating specifications for the industrial flow switch.
| Detection range | 0.2 to 10 GPM |
|---|---|
| Output signal | Relay |
| Relay contact rating | 5A |
| Power supply | 12 to 24VAC/DC |
| Warm-up time | 10 seconds |
| Response time | 1 to 3 seconds |
| Working pressure | 1500 psi |
| Working temperature | -5°F to 200°F |
Product documents
Reference manual and specification sheet for installation and product details.
Industrial Flow Switch Manual
Specification and installation reference for the industrial flow switch.
Product details
APOLLO Pool Flow Switch
Designed in the USA.
High-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.
Key Benefits
- Non-mechanical design with no moving parts for long-term reliability
- Provides accurate flow detection with adjustable field-set flow rate
- Operates without creating pressure drop in the system
- Suitable for a wide range of applications including boilers, water heaters, chillers, and transfer systems
- Visual status indication through 6 integrated LED indicators
- Includes both normally open and normally closed outputs for flexible integration
Applications
- Boiler flow proving
- Hot water heaters
- Chillers
- Liquid transfer systems
- Any pipe size requiring non-mechanical flow detection
Specifications
- Detection Range: 0.2 to 10 GPM
- Output Signal: Relay
- Relay Contact Rating: 5A
- Power Supply: 12 to 24VAC/DC
- Warm-Up Time: 10 seconds
- Response Time: 1 to 3 seconds
- Working Pressure: 1500 psi
- Working Temperature: -5°F to 200°F
- Connection Size: 1/2" NPT
- Probe Length: 1 1/4 inches
- Cable Length: 17 ft
- Protection: Thermal cut-off protection in empty pipe
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.
