Introduction:
The electromagnetic diaphragm dosing pump delivers stable, accurate chemical liquid dosing for water treatment, chemical processing, wastewater, swimming pool and industrial dosing systems. Powered by electromagnetic drive with PTFE anti-corrosion diaphragm, this metering pump features IP55 waterproof housing, multiple control modes (manual, pulse, 4-20mA proportional signal) and full anti-corrosion wetted parts to handle various corrosive reagents. Compact, outdoor-usable and easy to install & maintain, it provides reliable continuous liquid transfer with adjustable flow and pressure for diverse industrial dosing demands.
Main Characteristics:

✅ Strong Anti-corrosion Performance
All medium-contacting parts adopt corrosion-resistant materials: PTFE diaphragm, PVC/PP pump head, ceramic valve balls, FPM seals, PVC/PE/PTFE suction & discharge pipes, compatible with most acids, alkalis and chemical reagents.
✅ Optional Control Versions for Different Automation Needs
Manual type: Simple panel, adjust stroke frequency directly for manual dosing.
Pulse control type: Accept external pulse signal, support 5VDC sensor power output, remote dry contact start/stop (NO/NC optional).
4-20mA proportional control type: Standard analog signal, adjustable proportional coefficient, support forward & reverse proportional automatic flow regulation.
✅ Precise & Stable Dosing Performance
Two series available (S Series / M Series) with flow range 1~20L/h, pressure 3~7bar, stroke frequency 120~180 times/min, max suction height 2m. Steady output with low pulsation, guarantee accurate chemical addition.
✅ Easy Installation & Operation
Two standard installation ways: immersion mounting (ideal) & suction lift mounting. Complete accessories included: 2m suction hose, 2m discharge hose, bottom filter valve & injection valve. User-friendly control panel with clear LED indicators and one-button frequency adjustment.
✅ Low Maintenance Cost
Simple structure with few wearing parts; only ceramic one-way valves need replacement every 4-6 months under normal working conditions, greatly reducing after-sales maintenance expense.

Detail drawing of the product