Boreline Flexible Rising Main

Boreline Flexible Rising Main

Please use the navigation menu on the right to explore our Boreline Flexible Rising Main products and services. We have installing these products since 1993 when they first emerged on the market. If you have any further questions please contact us on 0116 286 7845 or visit our contact us page.

Boreline Flexible Rising Main - Features

The Riser

The Flexible Riser is constructed from high tenacity polyester yarns, which are circular woven and then totally encapsulated to form an integrated cover and lining of a high performance polyurethane elastomer, which is approved for use with potable water. A special rib is incorporated in the cover to facilitate the attachment of securing straps for the electric cable.

Riser Specifications

The riser has a minimum theoretical short length burst pressure and tensile strength as shown on the table below. Average extension is no more than 3% and maximum diameter swell 15%. The material is capable of operating in water from pH 4 to pH 9 and temperatures up to 60C. The manufacturer provides a warranty of 5 years against materials and manufacturing defects.

Couplings

The flexible riser is fitted with fully re-usable couplings each comprising a body and two outer fastening clamps. The body of the coupling contains two ribs over which the hose fits and the clamps are tightened - the two fastening clamps being split into three equal parts. Couplings are made in 316 Stainless Steel for use with drinking water or where water is of an aggressive nature or in Aluminium Bronze ( Additionally in High Tensile Polymer for 1", 1" & 2" sizes ). The couplings are supplied with BSP male threads for attachment to the pump at one end and to the surface head works at the other.

Boreline Data

Nominal Hose Dia.   1" 1" 2" 3" 4" 5" 6" 8"
Inside diameter (mm) 24 40 50 76 102 127 152 200
Burst pressure (bar) 85 65 65 60 58 58 58 45
Operating pressure (bar) 40 30 30 25 25 22 22 12
(psi) 580 425 425 350 350 310 310 175
Tensile strength (kg) 1,400 3,000 4,000 7,000 12,000 16,000 20,000 18,000
Weight of Boreline (kg/m) 0.24 0.50 0.55 0.95 1.40 1.70 2.50 3.7
Minimum well diameter (mm) 102 102 102 152 203 255 305 406
(in) 4 4 4 6 8 10 12 16
Coupling clamp torque setting (Nm) 10 10 12 30 30 40 45 45
Outer diameter of coupling (mm) 60 80 95 140 165 200 230 350
Coupling weight (kg) 0.9 1.4 2.8 6.0 8.3 13.0 16.7 42.0
Weight of water (kg/m) 0.5 1.45 2.25 5.10 9.05 14.15 20.35 31
Surface Area / Volume Ratio (m/m) 167 100 80 53 39 31 26 20

Minimum well diameters makes no allowance for any cables or dip tubes that may be required.

Due to continual Research & Development the above specifications are subject to change without notification.

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