FLEXIBLE RISING MAIN
Wellman flexible rising main is designed as a permanent alternative to traditional materials such as steel, fibreglass, PVC and polyethylene in water wells with electric submersible pumps.
ADVANTAGES OF THE WELLMAN SYSTEM INCLUDE:
RAPID INSTALLATION AND RETRIEVAL OF THE SUBMERSIBLE PUMP
Supplied in a single length to the required pump setting, there are no flanges or joints, except at the pump and headworks. Installation options include by crane or with a vehicle allowing for rapid restoration of service in the event of routine maintenance or pump failure.
SUPERIOR HYDRAULIC PERFORMANCE
The textile reinforcement is designed to swell under operating conditions up to 15%. This feature gives a nominal increase in riser diameter, reducing friction loss and improving hydraulic performance. Often this can be translated into a smaller Wellman diameter than conventional rigid pipe, giving additional financial benefits.
All synthetic materials of construction mean that there is zero corrosion and no scale build up. The high grade polyurethane lining and cover material is resistant to hydrocarbon fuels, many chemicals, ozone and UV, abrasion and microbial attack.
EASY TO STORE AND TRANSPORT
Wellman has a small storage footprint compared to rigid pipe, allowing transportation by smaller vehicles and requiring less manpower. Particularly useful when installation is required in remote locations with poor access.
INTERNATIONAL DRINKING WATER CERTIFICATION
UK WRAS approval to BS6920
USA NSF61 listed
Germany KTW-DVGW approved
Australia AS-NZS4020-2005 approved
Poland PZH approved
TYPICAL APPLICATIONS INCLUDE
• Groundwater abstraction – potable and brackish
• Water supply wells in R.O. desalination plant applications
• Food processing
• Irrigation / Agriculture
• Environmental monitoring
• Mine de-watering
• Land stabilisation
• Solar power systems
• Offshore rig fire water and service pumps
• Golf courses
The 5 inch (127mm) and 6 inch (152mm) Wellman diameters now have two straps, one each on opposite sides as a standard feature. To spread the weight of heavy cables and other monitoring equipment in the well.
Wellman is manufactured using ’through-the-weave’ technology, where the high grade polyurethane lining and cover are formed in a single process to provide a tough composite riser. The textile reinforcement is designed to support the weight of the submersible pump, the column of water, the power cable and the riser itself, with a minimum 2.5:1 safety factor.
Additionally, torque on pump start-up is accommodated without damage to the riser. The Mandals company also manufactures the textile weaving machines used by all the major hose companies throughout the world so their understanding of textile design and technology is unparalleled
Wellman is the main component of a complete system, which includes couplings, power cable attachment equipment, lifting clamps and wellhead rollers. All ancillary equipment can be supplied and factory-trained installation engineers are available to provide assistance and training if required.
IT IS IMPORTANT THAT ONLY APPROVED ACCESSORIES ARE USED WITH THE WELLMAN RISER. THE USE OF ALTERNATIVE COMPONENTS WILL COMPROMISE THE INTEGRITY OF THE COMPLETE SYSTEM.