Borehole Accessories



PVC BOREHOLE PIPES
Dayliff PVC Borehole pipes are specially designed for all borehole installations being exceptionally strong and having an extremely secure jointing arrangement. Their many benefits include:-

  • Made from strong non corroding uPVC for long life
  • Deep square thread spigot ends with rubber joint for easy coupling and an assured seal
  • Smooth surface finish reduces hydraulic friction and increases pump efficiency
  • Very light and easy to handle
  • Suitable for water temperatures up to 70°C
  • Economical to buy and install

Dayliff PVC Borehole pipes are available in 3m lengths in standard, heavy and super heavy duty specification in sizes from 1specification in sizes from 1¼" and 3" and all installations include steel pump and well head connectors. For extra deep installations a piping/connector bracing kit is available for additional security. They offer very considerable advantages over traditional steel pipe alternatives and are ideal solution for all borehole pump installations.

Size Pipe Outer Diameter(mm) Outer Diameter over socket(mm) Wall Thickness(mm) Ultimate Breaking Load(kg) Safe Pulling Load (kg) Max Allowable Pressure(bar) Safe Total Pump Delivery Head(m) Weight(3m pipe)
(mm) (in) Pipe only(kg) Pipe + water(kg)
32 42 55.5 5 2,650 1400 26 250 2 5
38 48 62.5 5.2 3,200 1500 26 260 3 6
50  2  60 78.5 6.4 5098 2700 21 200 4 10
50HD* 7.3 5682 3200 27 270 5 11
65 73 92.5  6.6 5934 3600 18 160 5 15
65HD* 94.5  8.7 7432 4000 26 260 6 16
65SHD** 10 9194 4250 35 350 8 18
80SHD** 3 89 115 10.5 12000 6500 35 350 10 25

* Heavy Duty Pipes
** Super Heavy Duty Pipes

SUBMERSIBLE CABLES
Dayliff submersible cables are specially selected for motor power supply in all borehole pumping applications. They are of 4-core type and available in sizes from 1.5 to 25mm, all using plain annealed flexible copper strands as the conductor. All cables are designed for heavy duty use with excellent resistance to oils, chemicals and solvents and are suitable for temperatures up to 40°C. Two types are available, round blue rubber sheathed to HO7RN-F specifications with conductor sheath coloured brown, blue, black and yellow/green and red, yellow, green, blue for the blue PVC sheathed flat cable.

Size (mm) Current rating,(Amps) Conductor Resistance,(ohms/km) No of 0.3mm Wires Rubber Round Cable PVC Flat Cable
Diameter(mm) Weight/m (kg) Thickness(mm) Width(mm) Weight/m(kg)
1.5 14 12.1 22 11.2 0.16 6.0 15.8 0.16
2.5 18 7.4 36 13.0 0.22 6.5 18.0 0.22
4 26 4.95 56 14.9 0.32 7.6 21.0 0.31
6 31 3.3 85 17.5 0.44 7.9 24.3 0.43
10 42 1.91 140 22.6 0.74 9.9 29.7 0.66
16 57 1.21 226 27.1 1.09 11.8 36.0 0.96
25 72 0.78 354 32.7 1.65 14.7 45.1 1.52

WELL HEADS
Dayliff Well heads are complete units to terminate the top of a borehole. They comprise a strong steel borehole cover plate with dipper access, drop cable/surface cable junction box and pump outlet with valve, test tee, pressure gauge connection and union. They are available as standard in sizes from 1¼" to 4" for both 6" and 8" boreholes, though other specifications are available to special order.