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Dewatering and groundwater control | Stuart Well Services Ltd

Wellscreen/Well Liners

Air Sparging

Well materials are available in uPVC, HDPE and Steel. PVC liners are available from a nominal diameter of 19mm up to 200mm.

Wellscreen, Well Liners Sizes

Well materials are available in uPVC, HDPE and Steel.

PVC liners are available from a nominal diameter of 19mm up to 200mm.The well liners ND23 mm size and upwards are suitable for use in water abstraction projects and are approved under the Water Regulations Approval Scheme (WRAS), Approval Number: 2309549.

The testing procedure confirms that the well screens and casings are suitable for contact with wholesome water for domestic purposes having met the requirements ofBS6920-1:2000 and/or 2014 'Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of the water.

The approval is valid until September 2028

Various machined slot sizes to allow for ground conditions are available. The pipe is stocked in lengths of 1m and 3m, with each length being male/female threaded so that installations can be suited to specific site conditions, in 50mm normal diameter HDPE and uPVC, we also stock 2m section of plain and slotted.

For specification of these materials the following criteria should be stated:

"uPVC casing and wellscreens shall be supplied by an ISO9001 approved manufacturing company, the pipe shall be male/female threaded with machined slots on the wellscreen.

The slots shall be horizontal to the pipe length to prevent slot compressions.

19 26.5 32 280m
23 33.5 33.5 450m
35 42 46 320m
52 60 60 320m
80 88 95 90m
103 113 120 90m
115 125 130 60m
125 140 148 100m
155 165 172 35m
200 225 235 35m

ND = Nominal Diameter (mm)
MOD = Maximum Outside Diameter (mm)
MOSD = Maximum Over Socket Diameter (mm)
MID = Maximum Installation Depth

High Density Polyethylene Liners

Stuart Well Services supply a range of well-linings for site investigations, dewatering wells, leachate abstraction wells, water abstraction wells, soakaways and gas abstraction wells.

These are manufactured to meet the requirements of ISO9001: 1994. Pipes are male-female threaded in lengths of 1 and 3 metres.

Specifications are as follows:

  • Manufactured from High Density Polyethylene (HDPE)
  • High temperature resistance
  • Vicat softening point 125ยบ ISO R 306 (B)
  • Resistant to aggressive chemical found in landfill sites
  • High strength, tough and durable
  • Threaded, giving maximum strength of joint with rapid assembly - flush joints
  • Metric sizes to suit all horizontal pipework
  • Manufactured to DIN 8074
  • Landfill site proven for over 10 years

  • Outside Diameter (mm) Inside Diameter (mm)
    40 28
    63 51.4
    90 73.6
    110 97.4
    160 141.8

    Other dimensions and wall thickness are available on request up to 630mm diameter.

    Slot sizes are 1mm standard, other sizes available on request .

    Wire Wrapped Wellscreen

    Using a wire wedge wellscreen has specific advantages over other steel screens and allow high flows of sand free water into the well because of:

    Wire Wrapped Wellscreen
  • A large open area
  • Close slot tolerance to control fines
  • Efficient well yielding
  • No plugging

  • Wellscreens are made in a range of stainless steels 304 or 316 and other weldable metals in a wide range of diameters and slot sizes from 0.25mm to 4mm.

    Screens and casings are manufactured to customer requirements with threaded or flange connectors, lead time is up to 10 weeks, so please enquire early.

    Available to order as not stocked

    Bridge Slotted Wellscreen

    Bridge slot screens are formed by punching openings into a flat sheet that is subsequently rolled into a tube and welded.

    Bridge Slotted Wellscreen

    The openings are arranged in staggered rows to maintain the screen's strength.

    Advantages of this screen are high strength through resistance to twisting, compressive and tensile forces.

  • Slot sizes from 1.0mm to 4mm
  • Wall thickness 6mm or 10mm
  • Diameters from 150mm to 1000mm
  • Open area 6% to 23%

  • Available to order as not stocked

    Simple Slotted Screen

    Simple Slotted Well Screen

    These are formed from perforated plate that is rolled and welded. The holes are rectangular in shape and arranged in rows with the longer side of the slot in alignment with the pipe axis.

  • Slot sizes from 3mm to 6mm
  • Wall thickness 3mm to 10mm
  • Open area 14% to 23%

  • Available to order as not stocked

    Accreditations and Associations

    ISO-9001 ISO-14001
    ISO-22301 ISO-45001
    The Temporary Works Forum (TWf)