Precise chemical dosing is an important part of maintaining safe, balanced pool water. A chemical dosing pump helps deliver the right amount of treatment chemicals consistently, helping pool professionals maintain water quality while reducing the risk of overdosing, chemical concerns and failed inspections. Choosing the right pump starts with understanding the needs of your facility and how the system will be used.
Identify the Pool Type and Volume
Pool size and application type play an important role in determining pump requirements. The needs of a municipal pool may differ from those of an aquatic facility, commercial pool or spa. Selecting a pump that is not properly sized for the application can cause it to operate at capacity more often than necessary or cycle inefficiently, potentially contributing to premature wear.
It’s also important to consider usage patterns. Pools can experience fluctuations in bather loads and periods of peak demand that affect chemical requirements. Spas present additional considerations because their elevated temperatures can accelerate chemical degradation.
Understanding the pool’s volume, usage and operating conditions provides a starting point for selecting a pump with the appropriate capacity.
Choose the Right Pump Mechanism
Peristaltic Pumps use rotating roller to squeeze liquid through flexible tubing. Since the chemical remains contained within the tubing and does not come into contact with the pump’s internal components, peristaltic pumps are well suited for handling chemicals such as sodium hypochlorite and muriatic acid.
For pool applications, look for a pump that provides consistent output, straightforward maintenance and easy tubing replacement. Rola-Chem Peristaltic Pumps provide these features, helping simplify routine service and keep chemical feed systems operating reliably.
Other pump designs may use a reciprocating diaphragm to displace fluid at higher pressures. Depending on the design, these pumps can have additional components that come into contact with the chemical and may require periodic inspection or maintenance.
Ensure Chemical Compatibility
Chemical compatibility is another important consideration when selecting a dosing pump. Sodium hypochlorite, commonly used as liquid chlorine, and muriatic acid have different chemical properties that can affect pump components over time. Using a pump with materials that are not suited to the chemical being fed can contribute to premature wear or component degradation.
Verify that all wetted components, including tubing, fittings, valves and pump head materials, are compatible with the chemicals used in the application. Chemical Tanks should also be constructed from materials designed to withstand the chemicals they will contain. Rola-Chem Chemical Tanks feature heavy-duty construction formed from high-density polyethylene, while UV-protected material helps shield chemicals from sun exposure for reliable outdoor storage.
Consider Automation and Control Features
Manual dosing can be suitable for applications where chemical demand is relatively predictable. For many professional pool applications, however, automated control can provide greater consistency and reduce the need for manual adjustments.
A dosing pump paired with a pH/ORP Digital Controller can monitor water chemistry and adjust chemical feed based on current conditions. This allows the system to respond to changing demand and helps maintain water chemistry within the desired range.
When evaluating automation and control features, consider:
- Flow Pacing
- Output can be adjusted in proportion to the circulation pump’s flow rate, helping maintain consistent dosing as flow rates change
- Monitoring
- Remote monitoring allows technicians to view system information and alarm status without having to be on-site, which can be especially valuable for facilities with multiple locations
- Alarms and Failsafes
- Features such as chemical alerts, over-limit shutoffs and dosing logs can provide additional visibility and help protect the system
Find the Right Dosing System for Your Application
Choosing a chemical dosing pump comes down to understanding the specific requirements of your application, including pool volume, chemical type, flow rates and the level of automation needed. Matching the pump and control system to those requirements can help support consistent chemical feed and long-term system reliability.
Rola-Chem offers Ready-to-Mount Systems that combine Peristaltic Pumps and pH/ORP Digital Controllers on a pre-wired panel, simplifying installation and helping eliminate compatibility guesswork.
The Rola-Chem team works with pool professionals and distributors across North America to help match the right system to each application. Contact us today to get started.