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 60°C. 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", 1½" & 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” |
1½” |
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 |
(m²/m³) |
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