ATEX GTA Screw Pumps

The Lamor GTA SS ExProof ATEX certified pumps are multipurpose submersible Archimedes screw pumps with a pumping capacity range of 20 to 110 m³/h. These pumps have been designed for use in skimmers and transfer or offloading pump applications. The pump handles a wide range of liquids ranging from water to the heaviest debris-laden viscous oils. The GTA SS pumps can deliver a maximum of 12 bar outlet pressure, benefits from water/steam annular injection on the inlet as standard and debris cutting knife to handle solids such as seaweed, plastics and ropes.

The GTA ExProof pumps are certified according to ATEX Ex II 3 G EX h IIB T4 Gc.  The SS pump frame is constructed from Stainless Steel AISI 329 (EN 1.4462) for the casings and stainless, acid proof steel internals with special seals that ensure the pump remains “dry”. This hydraulically driven, positive displacement pump with low screw speed avoids further emulsification of the recovered product thus making further separation more efficient.

The special internal geometry of the GTA SS design ensures a gentle pumping action that will not emulsify oily water, and ensures the efficient movement of material through the unit. The pump can also handle solids up to 30 mm in diameter, should the pump become clogged, and it can be reversed to expel the blockage. The GTA’s range of impressive features makes it well-suited to many applications, including for use as a transfer pump in oil recovery skimmers, for emergency pumping of heavy crude, bunker oil, or bitumen, for tank cleaning, pipeline maintenance, and for sludge removal from waste oil pits. The Stainless Steel casing also enables the pump to be used in acid content liquids and other harsh environments.

Technical Specifications

ID number: 400463
Parameter /       Type
GTA 20 SS ATEX GTA 50 SS ATEX GTA 70 SS ATEX GTA 115 SS ATEX GTA 140 SS ATEX Unit
Pump capacity 20 50 70 110 110 m³/h
Discharge pressure 12 12 10 12 10 bar
High torque version Yes Yes Yes
Length 300 400 400 500 500 mm
Width 195 250 250 300 300 mm
Height 435 500 500 598 598 mm
Weight 36 69 67 105 105 kg
Minimum manhold dia. 300 400 400 520 520 mm
Discharge outlet (Camlock, standard) 3” male 4” male 4” male 5” male 5” male
Hydraulic connectors (standard) Pressure: SS TEMA 7511 RFV

Return: SS TEMA 10021 RFV

Drain: SS Aeroquip 3/8”

Hydraulic flow (max) 80 160 92 160 160 l/min
Hydraulic pressure (max) 210 bar
Hydraulic flow (max) 28 56 32 56 56 l/min

Features and Benefits

  • Explosion Proof construction
  • Robust Stainless Steel casing and stainless, acid proof steel internals
  • Well-suited to many applications. I.e. for emergency pumping of heavy crude, bunker oil, or bitumen, for tank cleaning, pipeline maintenance, and for sludge removal from waste oil pits.
  • The Lamor GTA SS ATEX pump range has received accreditation from Bureau Veritas confirming their recovery capacities with oils of varying viscosities.

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