ST Series Motor Dosing Pump

Pricing: POA, contact us for a quote.

Special order item: the ST Series is built to order in the flow rate, pressure and head material configuration required for your installation. Exact specification and lead time confirmed at quote stage.

Requires three-phase power supply. Standard motor is three-phase; this pump is intended for larger installations that already run three-phase circulating equipment, not typical residential single-phase setups.

Professional installation recommended: this is chemical dosing/injection equipment for water treatment and should be installed and commissioned by a qualified technician.

ST is a series of electronic-free motor pumps with mechanical (micrometric) adjustment of stroke length, easy to use and requiring minimal maintenance. It's a higher-output pump line than STEIEL's electromagnetic dosing pumps, suited to larger-scale installations rather than standard residential pools. Used across water treatment, chemical dosing and industrial applications, including aggressive chemicals.

Available configuration variables (confirmed at order)

• Flow rate: 4 up to 2000 L/h (model dependent)
• Backpressure: up to 14 bar (model dependent)
• Diaphragm: rigid, multi-layer; liquid-contact parts in PTFE
• Dosing head material: PP, PVDF, or AISI316L (selected for chemical compatibility)
• Pump housing: techno-polymer or aluminium (model dependent)
• Motor: three-phase, 230-380V 50Hz / 280-480V 60Hz (standard); single-phase available on request
• Mechanical parts run in an oil bath
• Stroke length (injection volume) adjusted manually via micrometric control