Watson-Marlow Qdos Metering Pumps
At Industrial Air Services, we help facilities select Watson-Marlow Qdos chemical metering pumps for accurate, repeatable chemical dosing in water treatment and industrial processes.
From our location in LaVergne, Tennessee, we support facilities throughout Central and East Tennessee, including Nashville, Murfreesboro, Smyrna, Lebanon, Clarksville, Cookeville, Chattanooga and Knoxville.
Qdos pumps use peristaltic technology to meter chemicals without the valves, diaphragms or mechanical seals found in many conventional dosing pumps. The chemical stays within the pumphead fluid path, simplifying routine maintenance and helping limit operator contact with process chemicals.
These pumps support continuous or intermittent dosing in water treatment, wastewater treatment, chemical processing, food and beverage production and other industrial applications.
Accurate Chemical Metering
Consistent chemical delivery helps facilities maintain treatment targets, control operating costs and avoid unnecessary adjustments. Qdos pumps move a controlled volume of fluid through the pumphead, providing repeatable dosing when properly selected and calibrated.
Qdos pumps can help facilities:
Maintain consistent chemical feed rates
Reduce overdosing and chemical waste
Improve process control
Simplify calibration and routine maintenance
Reduce the need for certain ancillary components
Limit chemical handling during pumphead replacement
Whether you operate a treatment facility in Davidson County or a manufacturing plant in Rutherford County, Industrial Air Services can help identify a pump configuration suited to your process.
Qdos Chemical Metering Pumps
The standard Qdos range serves lower-flow chemical metering applications. Different models and pumphead materials accommodate varying flow rates, discharge pressures and chemical requirements.
Common applications include:
Chlorination and disinfection
Sodium hypochlorite dosing
pH adjustment
Acid and caustic addition
Coagulant and flocculant dosing
Polymer dosing
Nutrient addition
Process chemical injection
Cleaning chemical addition
Pump selection should account for the exact chemical, concentration, temperature and operating conditions.
Qdos H-FLO Metering Pumps
Qdos H-FLO extends the Qdos range into higher-flow chemical metering applications. It offers peristaltic chemical containment for processes that require greater chemical feed volumes.
Qdos H-FLO may be appropriate when a facility needs:
Higher chemical dosing rates
Repeatable flow control
Simplified pumphead maintenance
Fewer ancillary components
Integration with plant control systems
Industrial Air Services can help review flow, pressure and control requirements to determine whether a standard Qdos model or H-FLO configuration fits the application.
ReNu Pumphead Technology
Qdos pumps equipped with ReNu pumpheads use a replaceable assembly that contains the pumped chemical. This design allows maintenance personnel to replace the fluid-contact portion without rebuilding valves, diaphragms or a conventional wet end.
The appropriate pumphead depends on chemical compatibility, concentration, temperature, discharge pressure and required flow. Reviewing these conditions before selection helps support dependable operation and practical maintenance planning.
Why Choose Qdos Metering Pumps?
Accurate, repeatable chemical dosing
Peristaltic operation without conventional check valves
No mechanical seals in the pumping fluid path
Reduced susceptibility to vapor locking
Straightforward pumphead replacement
Simplified installation and maintenance
Options for continuous or intermittent dosing
Multiple flow, pressure and control configurations
Qdos Pump Support Across Central and East Tennessee
Industrial Air Services helps facilities evaluate chemical metering requirements throughout the Nashville area and surrounding communities, including LaVergne, Smyrna, Murfreesboro, Lebanon and Mount Juliet, as well as Cookeville, Chattanooga and Knoxville.
If you are searching for “chemical metering pumps near me” or need help selecting a Qdos pump for a Tennessee facility, contact our team to discuss your application.
Contact Industrial Air Services for Qdos Metering Pumps
Discuss your required flow rate, discharge pressure, chemical concentration, temperature and automation needs with Industrial Air Services.
Call: (615) 641-3100
Visit: 138 Bain Drive • LaVergne, TN 37086
Watson-Marlow Qdos Metering Pumps FAQ
What are Watson-Marlow Qdos pumps used for?
Qdos pumps meter chemicals in water treatment and industrial processes. Typical duties include controlled chemical addition where repeatable feed rates and straightforward routine maintenance are important.
How does a Qdos metering pump work?
Qdos uses peristaltic pumping technology to displace liquid through its pumphead fluid path. The chemical is separated from the drive mechanism, avoiding conventional pumping check valves and rotating shaft seals.
How does Qdos differ from a diaphragm metering pump?
A diaphragm pump typically uses a reciprocating diaphragm and check valves. Qdos uses a peristaltic fluid path, creating different maintenance requirements and behavior when handling gas in the chemical supply.
What chemicals can a Qdos pump handle?
Compatibility depends on the pumphead and connected components. Specify the exact chemical, concentration, and temperature so the complete fluid path can be checked before selection.
Can Qdos be used for sodium hypochlorite dosing?
Qdos products are used for hypochlorite dosing with suitable pumphead materials. Evaluate concentration, temperature, gas formation, storage conditions, and discharge requirements for the particular installation.
Why is accurate chemical dosing important?
Stable dosing helps keep the treatment process within its target range. Underfeeding can reduce treatment effectiveness, while overfeeding can waste chemical and create additional process-control problems.
Does a metering pump need calibration?
Calibration checks actual delivery against the selected setting. Perform it under representative operating conditions and repeat it as required after maintenance or significant changes in the fluid or system.
How do I select the correct Qdos model?
Identify minimum and maximum dosing rates, discharge pressure, chemical properties, and control requirements. Confirm that the selected model and pumphead cover the entire required operating range.
Can Qdos operate with external process controls?
Control options vary by model. Specify the required start-stop function, analog signals, or communications, and confirm compatibility with the existing controller and selected pump configuration.
Can a Qdos pump provide both intermittent and continuous dosing?
A suitable configuration can support either duty. Selection should consider the dosing schedule, accuracy requirements, pumphead life, and whether demand changes rapidly during the process.
What is turndown in a dosing application?
Turndown describes the relationship between maximum and minimum useful feed rates. Select a pump that can control the full required range rather than one sized only for peak demand.
How does discharge pressure affect selection?
The pump and pumphead must be rated for the required pressure, including line losses and downstream pressure. Verify the available flow at that duty rather than relying on a maximum-flow figure alone.
What maintenance does a Qdos pump require?
Routine attention centers on the pumphead, fluid connections, and the maintenance schedule for the selected model. Inspect for wear or leakage and verify dosing performance following pumphead replacement.
Can Qdos reduce chemical handling during maintenance?
The replaceable pumphead arrangement can simplify servicing and help limit contact with chemicals. The actual procedure still depends on the installed model, connected piping, and chemical-handling requirements.
Can Qdos replace an existing metering pump?
A replacement may be practical after checking dosing range, pressure, materials, controls, and installation dimensions. Review existing accessories individually to determine which remain appropriate for the new arrangement.
Where can I request Qdos pump assistance in Tennessee?
Contact Industrial Air Services at (615) 641-3100 with the chemical, dosing range, discharge pressure, control signals, and current equipment information to discuss a suitable Qdos selection.