January 9, 2018

New product: Watson-Marlow Qdos 20 pump

Qdos 20 pump, image courtesy of Watson-Marlow.
Qdos 20 pump, image courtesy of Watson-Marlow.

A new addition to the Qdos range of chemical metering pumps, Qdos 20 is designed with maintenance reduction in mind

The new pump has been developed to offer enhanced accuracy for sodium hypochlorite metering in disinfection applications with flow rates to 20 litres per hours at a maximum of 7 bar pressure. It is suited for applications at the well sites of many smaller water treatment plants, where operators are often injecting into water lines at higher pressure.

Qdos 20 features the same interface and control options so that users have continuity with any existing Qdos applications.  Aimed at low total cost of ownership, the new model is designed as a drop-in replacement for diaphragm pumps. Qdos pumps also include the ReNu pumphead for single, no-tools maintenance.

The pump is controlled via manual, 4-20mA, contact or PROFIBUS control.  The brushless DC motor control maintains flow accuracy of +/-1% with a repeatability of +/-0.5% and a turndown ratio of 3330:1.

The pump is also suited for tight control for chlorine residual. Company field trials and SCADA data indicate a considerable improvement in variation of chlorine residual compared to even the highest specification diaphragm metering pumps. This is achieved via the twin offset rotor design. 

The Qdos 20 peristaltic pump technology uses two tube channels; where the channels are operated out of phase.  Although peristaltic pumps are generally lower in pulsation than other positive displacement pumps, Qdos 20 reduces this pulsation further by alternate tube compressions ensuring pulsation is balanced out.  According to Watson-Marlow, this results in almost continual positive fluid displacement, and consistent metering of chemical into the application.

Process uptime is maximised by facilitating quick, safe and easy pumphead removal and replacement, with no need for tools, no specialist training and no maintenance technicians needed on site. The contained pumphead design with integral leak detection reduces wastage and eliminates operator exposure to chemicals.

Field trials have confirmed the long life of the pumphead, with one utilities customer in Minneapolis experiencing 12 months pumphead life. When operating up to 7 bar, the Qdos 20 pump also significantly reduced maintenance downtime. As a result, the plant is currently in the process of replacing the trial model with a production unit. 

Qdos 20 pump, image courtesy of Watson-Marlow.






January 19, 2018
The company has secured enough 20 year order commitments to proceed to the next stage of the project. The orders represent a supply of 500,000 barrels per day. TransCanada, the owner of the pipeline, is... [Read More]

January 19, 2018
The hairline pipeline leak was caused by the vibration of the pipeline next to a ‘sharp ridge’ of granite. INEOS took over the facility from BP in October 2017 after purchasing it for £250... [Read More]

January 18, 2018
The company hope the acquisition will complement another purchase it made in 2017 to improve its operator training services. Emmerson announced 18 January that it has acquired ProSys, a supplier of software... [Read More]

January 17, 2018
The company says that the purchase will complement their position in the food and beverage industry. RDC focuses on servicing industrial equipment and maintenance for pumps, valves, heat exchangers and... [Read More]

January 16, 2018
Andreas Ostermann von Roth completes the executive board after his predecessor left mid-2017. In the new role, which he began 1 January 2018, von Roth will be in charge of the Aventics plants across Europe... [Read More]

January 16, 2018
Prioritising versatility and durability, the company says that the pump has exceeded API 675 performance standards. 15 January, Wanner Engineering, Inc., Minneapolis, Minnesota, has announced the introduction... [Read More]

January 15, 2018
The fibre-optic based leak detection company is introducing an update to better scrutinise pipeline data with machine learning and increased channel capacity.  The Canadian company announced the... [Read More]

January 12, 2018
A OneBridge-Phillips 66 joint development project is set to advance digital management and machine learning for pipelines into the cloud. The US Pipeline and Hazardous Materials Administration reports... [Read More]

January 10, 2018
Unsurprisingly, they would prefer a soft Brexit: remaining in the single market and retaining essential skilled EU workers. The position paper was worked up by a group of British Pump Manufacturers Association... [Read More]

January 9, 2018
A new addition to the Qdos range of chemical metering pumps, Qdos 20 is designed with maintenance reduction in mind The new pump has been developed to offer enhanced accuracy for sodium hypochlorite metering... [Read More]

January 9, 2018
Fluid Handling International reported at the end of last year that the tax suppling the Coast Guard-administered fund was about to expire. It has now expired and is accompanied by a broad liberalisation... [Read More]

January 8, 2018
Hidrostal has made AxFlow a ‘key’ UK distributor for their range of screw centrifugal pumps for the industrial and process sectors. According to AxFlow, they are the UK’s largest distributor... [Read More]

January 8, 2018
A study proves that pipeline turbulence can be destabilised in a way that returns it to a more efficient flow. Scientists, who work out of the Institute of Science and Technology in Austria, developed... [Read More]

January 4, 2018
Sunoco has been ordered to stop construction of its Mariner East II natural gas pipeline until it complies with state-issued permits. According to the Pennsylvania Department of Environmental Protection... [Read More]

January 3, 2018
The Department of the Interior’s (DoI) Bureau of Safety and Environmental Enforcement has issued a provisional ruling to relax standards, aligning with an executive order in 2017 to review regulations... [Read More]