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When a process combines high pressure, aggressive corrosion and leakage risk, a hydraulic diaphragm metering pump is often the better choice. Its hydraulic drive maintains a high discharge pressure while the diaphragm isolates the medium from the moving parts.

Diaphragm Isolation

The diaphragm separates the pumped medium from the hydraulic oil and drive mechanism, reducing the risk of corrosive media entering the drive system.

Stable high-pressure output

The hydraulic system provides an even driving force to the diaphragm, ideal for stable high-pressure dosing in chemical and power processes.

Materials & Sealing

The pump head, valve assembly, diaphragm and seals must be selected for media compatibility; for volatile or crystallising media, also consider flushing, heat tracing or special valve seat designs.

Safety Accessories

We recommend fitting a safety valve, back-pressure valve, pressure gauge and pulsation dampener to prevent overpressure and pipeline surge.