Lutz-Jesco GmbH

Piston diaphragm dosing pumps are particularly precise dosing units, which are not dependent on pressure. Dosing capacity varies proportionally with the stroke length and can be set to the tiniest repeatable quantities. Two-piston and multiple-piston pumps are therefore particularly suitable for delivering precise mixtures, where different media must be mixed at a constant ratio which can be selected as desired. Using externally controlled drive motors, the total quantity can be varied from 5% to 100% at a constant ratio. Heated heads allow the dosing of media that are torpid when cold. A piston flushing skirt is available as an option, to prevent damaging leaks and protect the packing materials and pistons from abrasive chemicals.

A modular powerhouse
The MEMDOS KMS was developed in accordance with the modular principle. This offers the advantage that – depending on the problem – you can combine various pump elements and thus obtain a dosing pump that is optimally tailored to your needs.

Ease of installation

• Quick diaphragm change possible
• No zero-point correction with dismantling of the piston flange required

High flexibility

• The rational structure requires only a minimum of spare parts storage
• The addition of a second dosing unit to the drive with an identical or different capacity range produces a double head pump, the MEMDOS ZKMS.
• Thanks to its symmetrical form, the piston flange can be installed on the left-hand or right-hand side of the simple pump.
• This ensures an economical and compact system design.
• Due to the installation of only four stud bolts, the dosing pump can be converted from manual stroke adjustment to electrical stroke adjustment.
• For operation, motors with a multi-range voltage
• (220 – 240/380 – 420 V, 50 Hz; 440 – 480 V 60 Hz), a high protection class (IP55) and a high insulation class (F) are used.
• Special motors (ATEX) on request.
• TÜV-checked pressure relief valves are integrated in all pumps; these prevent damage to the pump and the periphery.
• The pressure relief valves have been selected to match the pump capacity and the desired maximum pressure in the system.