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. 

Suitable for pump settings up to 120 metres, Wellman 120 is used in applications such as domestic, light industrial, remote areas and well test pumping. With the same ’through the weave manufacturing process as Wellman 250, the riser is effectively a one piece composite, giving excellent stability and removing any risk of delamination.

 

A reinforced cable attachment strap prevents the power cable 

stretching the strap which can lead to full detachment.

FEATURES

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.

LOW MAINTENANCE

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.

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.

EASY TO STORE AND TRANSPORT

TYPICAL APPLICATIONS INCLUDE: 

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.

• Domestic systems

• Light industrial applications

• Environmental monitoring

• Well testing

TECHNICAL DATA

DOWNLOAD DATA SHEET (PDF)

Designed for use with pump settings up to 120 metres, our unique manufacturing process allows drums of up to 1,000 metres in a single length to optimize efficiencies for stocking distributors.

 

Wellman 120 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.