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Hydraulic packers

Reusable hydraulic packers for 32–265 mm boreholes

Dual-purpose packer convertible from single to double and back. Expands by hydraulic compression of two rubber rings protected by steel discs. Operated with a manual hydraulic pump. For valved steel casings (TAM) and groundwater drainage.

  • Tube-à-manchette (TAM) grouting
  • Rock grouting
Data sheet ↓Request a quote ↓
MDP 32

Two configurations, one packer.

You can reconfigure the hydraulic packer by changing the rubber layout: close together for bottom discharge, spaced apart to grout an isolated section.

Spaced rubbers · section grouting. The rubbers isolate the stage to be treated. Grout is injected into the section between the two seals.

Spaced rubbers · section grouting

The rubbers isolate the stage to be treated. Grout is injected into the section between the two seals.

Rubbers together · bottom discharge. The two rubbers sit side by side. Grout exits below the sealing assembly.

Rubbers together · bottom discharge

The two rubbers sit side by side. Grout exits below the sealing assembly.

Ground cross-section with valved casing. Left: the expanded rubbers isolate the grouting stage. Right: the packer at rest (deflated).
Spaced rubbers in the TAM pipe: left, the packer expanded; right, the packer at rest (deflated).

Technical data

Find your hydraulic packer

Each model can take rubbers of different diameters. Choose the borehole diameter to see the options whose range, from at-rest diameter to maximum expansion, covers it.

All options · 5 models · 16 options

MDP 32

Max. hydraulic pressure
100 bar1450 psi

  • Ø at rest
    32 mm1.26 in
    Max. expansion Ø
    54 mm2.13 in
  • Ø at rest
    35 mm1.38 in
    Max. expansion Ø
    58 mm2.28 in
Weight
1.2 kg3 lbs
Length A
635 mm25.00 in
Diameter F
32 mm1.26 in
Hydraulic hose fitting
1/8″
Grout hose fitting
1/4″
View dimensions — MDP 32
MDP 32 — View dimensions Indicative diagram, not to scale. Dimensions in mm; expansion elements shown at rest. A: 635; B: 250; C: 160; D: 80; E: 202. Spaced expansion elements Recovery cable D · 80 B · 250 D · 80 E · 202 A · 635 Side-by-side expansion elements Recovery cable B · 250 C · 160 E · 202 A · 635

Indicative diagram, not to scale. Dimensions in mm; expansion elements shown at rest.

MDP 38

Max. hydraulic pressure
180 bar2611 psi

  • Ø at rest
    38 mm1.50 in
    Max. expansion Ø
    61 mm2.40 in
  • Ø at rest
    45 mm1.77 in
    Max. expansion Ø
    68 mm2.68 in
Weight
3.5 kg8 lbs
Length A
635 mm25.00 in
Diameter F
38 mm1.50 in
Hydraulic hose fitting
1/8″
Grout hose fitting
1/4″
View dimensions — MDP 38
MDP 38 — View dimensions Indicative diagram, not to scale. Dimensions in mm; expansion elements shown at rest. A: 635; B: 250; C: 160; D: 80; E: 202. Spaced expansion elements Recovery cable D · 80 B · 250 D · 80 E · 202 A · 635 Side-by-side expansion elements Recovery cable B · 250 C · 160 E · 202 A · 635

Indicative diagram, not to scale. Dimensions in mm; expansion elements shown at rest.

MDP 55

Max. hydraulic pressure
180 bar2611 psi

  • Ø at rest
    55 mm2.17 in
    Max. expansion Ø
    84 mm3.31 in
  • Ø at rest
    67 mm2.64 in
    Max. expansion Ø
    92 mm3.62 in
Weight
7 kg15 lbs
Length A
903 mm35.55 in
Diameter F
55 mm2.17 in
Hydraulic hose fitting
1/8″
Grout hose fitting
3/4″
View dimensions — MDP 55
MDP 55 — View dimensions Indicative diagram, not to scale. Dimensions in mm; expansion elements shown at rest. A: 903; B: 400; C: 190; D: 95; E: 276. Spaced expansion elements Recovery cable D · 95 B · 400 D · 95 E · 276 A · 903 Side-by-side expansion elements Recovery cable B · 400 C · 190 E · 276 A · 903

Indicative diagram, not to scale. Dimensions in mm; expansion elements shown at rest.

MDP 80

Max. hydraulic pressure
180 bar2611 psi

  • Ø at rest
    85 mm3.35 in
    Max. expansion Ø
    120 mm4.72 in
  • Ø at rest
    98 mm3.86 in
    Max. expansion Ø
    130 mm5.12 in
  • Ø at rest
    110 mm4.33 in
    Max. expansion Ø
    138 mm5.43 in
  • Ø at rest
    130 mm5.12 in
    Max. expansion Ø
    154 mm6.06 in
  • Ø at rest
    150 mm5.91 in*
    Max. expansion Ø
    175 mm6.89 in

* switching to the MDP 115 packer is recommended

Weight
12.8 kg28 lbs
Length A
905 mm35.63 in
Diameter F
78 mm3.07 in
Hydraulic hose fitting
1/8″
Grout hose fitting
3/4″
View dimensions — MDP 80
MDP 80 — View dimensions Indicative diagram, not to scale. Dimensions in mm; expansion elements shown at rest. A: 905; B: 400; C: 190; D: 95; E: 276. Spaced expansion elements Recovery cable D · 95 B · 400 D · 95 E · 276 A · 905 Side-by-side expansion elements Recovery cable B · 400 C · 190 E · 276 A · 905

Indicative diagram, not to scale. Dimensions in mm; expansion elements shown at rest.

MDP 115

Max. hydraulic pressure
200 bar2901 psi

  • Ø at rest
    146 mm5.75 in
    Max. expansion Ø
    170 mm6.69 in
  • Ø at rest
    170 mm6.69 in
    Max. expansion Ø
    194 mm7.64 in
  • Ø at rest
    190 mm7.48 in
    Max. expansion Ø
    215 mm8.46 in
  • Ø at rest
    210 mm8.27 in
    Max. expansion Ø
    235 mm9.25 in
  • Ø at rest
    240 mm9.45 in
    Max. expansion Ø
    265 mm10.43 in
Weight
42 kg93 lbs
Length A
1430 mm56.30 in
Diameter F
115 mm4.53 in
Hydraulic hose fitting
1/4″
Grout hose fitting
1 1/2″
View dimensions — MDP 115
MDP 115 — View dimensions Indicative diagram, not to scale. Dimensions in mm; expansion elements shown at rest. A: 1430; B: 480; C: 410; D: 205; E: 460. Spaced expansion elements Recovery cable D · 205 B · 480 D · 205 E · 460 A · 1430 Side-by-side expansion elements Recovery cable B · 480 C · 410 E · 460 A · 1430

Indicative diagram, not to scale. Dimensions in mm; expansion elements shown at rest.

Selection by diameter is a guide only: check compatibility with the borehole or pipe before use. Packer diameter, pipe diameter and packer nozzle size are not interchangeable. Dimensions A–E are shown in each model’s diagram. Diameter F is listed separately.

Download catalogue (PDF)

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Let's talk about your project.

Tell us about the type of ground improvement, the grout mix and the operating conditions, and we'll help you choose the right configuration.

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