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 is a Watson-Marlow Qdos pump?
A Qdos pump is a peristaltic chemical metering pump designed to deliver controlled, repeatable flow. It uses a replaceable pumphead instead of the valves, diaphragms and mechanical seals found in many conventional metering pumps.
How does a Qdos metering pump work?
A rotating mechanism compresses the fluid path inside the pumphead, moving chemical from the inlet to the discharge. During normal operation, the chemical remains within that fluid path and does not contact the drive mechanism.
What is the difference between standard Qdos pumps and Qdos H-FLO?
Standard Qdos models serve lower-flow chemical metering duties, while Qdos H-FLO supports higher chemical feed rates. The correct selection depends on flow, discharge pressure, chemical compatibility and control requirements.
Can Qdos pumps replace diaphragm metering pumps?
In many applications, yes. A Qdos pump may reduce the need for components such as degassing devices and pulsation dampeners. However, the complete installation must be reviewed to determine which accessories and protective devices remain necessary.
Can a Qdos pump handle sodium hypochlorite?
Qdos pumps are commonly used for sodium hypochlorite dosing. Their peristaltic design avoids conventional check valves that can be affected by gas formation or crystallization. Pumphead compatibility must still be checked against the chemical concentration and operating temperature.
What chemicals can Qdos pumps meter?
Depending on the pumphead selected, Qdos pumps can handle disinfectants, acids, caustics, coagulants, polymers and other treatment chemicals. Compatibility should be confirmed for the exact fluid and operating conditions.
Why is my Qdos pump not delivering the correct flow?
Possible causes include pumphead wear, incorrect calibration, restricted suction piping, excessive discharge pressure, air entering the suction line or changes in fluid properties. Checking the installation and operating conditions can help identify the cause.
How often should a Qdos pumphead be replaced?
Replacement intervals depend on the chemical, pressure, speed, temperature and operating schedule. Follow the manufacturer’s maintenance guidance and use application history to establish a practical replacement schedule.
Does a Qdos pump require calibration?
Calibration helps align the indicated flow with actual delivery under installed conditions. Follow the model’s instructions for initial calibration and recalibration after pumphead replacement or significant process changes.
Can Qdos pumps communicate with a plant control system?
Control options vary by model and configuration. Available options may include manual operation, analog signals, contact inputs and industrial communication interfaces. Industrial Air Services can help review the controls needed for your facility.
Can Industrial Air Services help select a Qdos pump?
Yes. Industrial Air Services can help review chemical compatibility, required flow, discharge pressure, temperature and control requirements. Contact our LaVergne team to discuss pump selection, replacement needs or application support.
Where can I find Qdos metering pump assistance near Nashville?
Contact Industrial Air Services at (615) 641-3100. We are located at 138 Bain Drive in LaVergne and support facilities across Central and East Tennessee, including Nashville, Murfreesboro, Clarksville, Cookeville, Chattanooga and Knoxville.