Product Overview
The FlowVis FV-2 Flow Meter with Check Valve is a professional-grade flow monitoring and check valve solution designed for 2" Schedule 40 PVC pool and spa plumbing. It allows pool owners and service professionals to measure actual system flow while also helping prevent reverse water flow in compatible plumbing layouts.
This unit is especially useful for systems with variable speed pumps, heaters, filters, salt chlorinators, solar systems, and water features where knowing the correct flow rate is important for performance and troubleshooting.
Unlike many traditional flow meters, FlowVis is designed for flexible pool equipment pad installation and combines two useful functions into one component: flow measurement and reverse-flow protection.
Ideal For
In-ground pool equipment pads
Pool and spa circulation systems
2" Schedule 40 PVC plumbing
Variable speed pump setup and calibration
Heater minimum flow verification
Salt system flow troubleshooting
Filter system performance checks
Solar pool heating systems
Water feature flow balancing
Pool professionals diagnosing circulation issues
What’s Included
FlowVis FV-2 flow meter
Integrated check valve
Flow indicator lid assembly
Valve body for 2" Schedule 40 PVC plumbing
Manufacturer-supplied installation components
What’s Not Included
PVC pipe
PVC primer or cement
Unions or additional plumbing fittings
Pump, filter, heater, or salt system
Automation system
Installation labor
Replacement lid assembly
Additional check valves
Plumbing tools
Compatibility Guidance
The FlowVis FV-2 is designed for compatible pool and spa plumbing systems using 2" Schedule 40 PVC pipe.
Before ordering, confirm the following:
You need the FV-2 model.
Your plumbing uses 2" Schedule 40 PVC.
Your system flow rate is within the meter’s operating range.
Your equipment pad has enough space for installation and future service access.
Your installation location allows the flow indicator to be visible and easy to read.
Your plumbing layout benefits from an integrated check valve.
Your installer has confirmed proper flow direction and valve orientation.
Your equipment manufacturer requirements allow this type of flow meter/check valve installation.
Do not order this product by pipe size alone. Confirm the model, pipe schedule, flow range, installation orientation, and intended use before purchasing.
Confirm Before Ordering
Before purchasing, please verify:
You need the FlowVis FV-2 model.
Your system uses 2" Schedule 40 PVC plumbing.
You want both a flow meter and check valve in one unit.
Your system flow rate is compatible with this meter.
Your equipment pad has space for the valve body and readable lid.
You are not replacing a different pipe size or different FlowVis model.
Your pool professional has confirmed the correct installation location.
Key Features
Flow meter and check valve in one unit
Designed for 2" Schedule 40 PVC plumbing
Helps measure pool and spa system flow rate
Integrated check valve helps reduce reverse flow
Useful for variable speed pump setup
Helps verify heater, filter, salt system, and solar system flow
Professional-grade pool equipment pad component
Flexible installation compared with many traditional flow meters
Easy-to-read flow indicator
Useful for service diagnostics and routine system monitoring
Professional installation recommended
Benefits
The FlowVis FV-2 helps pool owners and technicians understand how much water is moving through the pool system. Knowing the actual flow rate can help with pump programming, equipment troubleshooting, heater operation, filter performance, salt system operation, water feature balancing, and overall circulation efficiency.
The built-in check valve adds extra value by helping prevent reverse flow where a check valve is needed. This can simplify the plumbing layout by combining two functions into one component.
For variable speed pump systems, a flow meter can be especially helpful because it allows the pump to be adjusted based on actual system flow instead of guesswork.
Recommended Use
Use the FlowVis FV-2 when you need to measure flow rate on a pool or spa system with 2" Schedule 40 PVC plumbing and would benefit from an integrated check valve.
Common installation locations include return-side plumbing, heater bypass areas, salt system plumbing, solar plumbing, water feature lines, and equipment pad circulation lines where flow measurement and reverse-flow protection are needed.
For best results, install the unit where it can be easily read, serviced, and inspected.
Installation Notes
This product should be installed by a qualified pool professional or experienced plumbing installer. Installation may involve cutting pipe, dry fitting, priming, cementing, checking flow direction, pressure testing, and verifying meter operation.
Professional installation is recommended to ensure:
Correct pipe size confirmation
Proper flow direction
Correct valve orientation
Leak-free plumbing connections
Readable flow indicator placement
Adequate service access
Proper system pressure testing
Compatibility with heaters, pumps, filters, salt systems, and solar systems
Improper installation may cause leaks, inaccurate readings, poor check valve operation, restricted flow, or equipment performance issues.
Important Fitment Note
This model is for 2" Schedule 40 PVC plumbing. It should not be used as a replacement for a different pipe size without confirming the correct FlowVis model.
If your system uses 1.5", 2.5", 3", metric plumbing, or non-standard pipe/fittings, verify the correct model before ordering.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | FlowVis |
| Model | FV-2 |
| Product Type | Flow Meter with Check Valve |
| Pipe Compatibility | 2" Schedule 40 PVC |
| Functions | Flow Measurement and Reverse-Flow Prevention |
| Application | Pool and Spa Plumbing Systems |
| Installation Type | Inline Plumbing Installation |
| Check Valve Included | Yes |
| Flow Indicator Included | Yes |
| Compatible Systems | Pool, spa, heater, filter, salt, solar, and water feature plumbing where properly sized |
| Complete Equipment Included | No |
| PVC Pipe Included | No |
| Primer / Cement Included | No |
| Installation | Professional Installation Recommended |
| SKU | FV-2 |
Customer-Facing Q&A
Q: What does the FlowVis FV-2 do?
A: It measures water flow rate and also functions as a check valve to help reduce reverse flow in compatible pool and spa plumbing systems.
Q: What pipe size does this model fit?
A: The FV-2 is designed for 2" Schedule 40 PVC plumbing.
Q: Is this only a flow meter?
A: No. This model combines a flow meter and check valve in one unit.
Q: Why is a flow meter useful?
A: A flow meter helps verify actual system flow, which can be useful for pump programming, heater operation, salt system troubleshooting, filtration checks, and water feature balancing.
Q: Can this be used with a variable speed pump?
A: Yes. It is especially useful with variable speed pumps because it helps confirm actual flow at different pump speeds.
Q: Can this be used near a heater?
A: Yes, when installed correctly in a compatible plumbing layout. A flow meter can help confirm that the heater is receiving proper water flow.
Q: Can this be used with solar pool heating?
A: Yes, if the plumbing layout and pipe size are compatible. It can help verify flow through solar heating plumbing.
Q: Does this replace a standard check valve?
A: It can be used where both a check valve and flow measurement are needed, as long as the plumbing size and installation layout are compatible.
Q: Does this include PVC pipe or glue?
A: No. PVC pipe, primer, cement, fittings, and installation materials are sold separately.
Q: Can I install this myself?
A: Professional installation is recommended because the product must be installed in the correct pipe size, orientation, and flow direction to work properly.
Q: What should I check before ordering?
A: Confirm that you need the FV-2 model, your plumbing is 2" Schedule 40 PVC, and your equipment pad has space for installation and easy reading.