High/low -Pressure Dosing Pumps

High-Pressure and Low-Pressure Dosing Pumps

High-pressure and low-pressure dosing pumps are types of chemical dosing pumps used to inject accurate and controlled quantities of liquid chemicals into a process system. These pumps are widely used in industries such as water treatment, chemical processing, pharmaceuticals, food production, and boiler systems. ⚙️💧

1️⃣ Low-Pressure Dosing Pumps

Low-pressure dosing pumps are designed to add chemicals into systems operating at relatively low pressure.

Typical Pressure Range

Up to approximately 5–10 bar (70–150 psi)

Common Applications

Water treatment plants

Swimming pool chemical dosing

Agricultural fertigation systems

Reverse osmosis (RO) plants for antiscalant dosing

Cooling tower chemical treatment

Key Features

Simple and compact design

Lower equipment cost 💰

Suitable for continuous dosing operations

Lower power consumption

Common Chemicals Used

Chlorine

Antiscalant chemicals

pH correction agents (acids or alkalis)

Nutrients and fertilizers

2️⃣ High-Pressure Dosing Pumps

High-pressure dosing pumps are used when chemicals must be injected into systems operating under high pressure conditions.

Typical Pressure Range

10 bar to over 100 bar (150–1500+ psi)

Common Applications

Oil and gas pipelines

High-pressure boiler systems

Chemical reactors

Desalination plants

Industrial processing lines

Key Features

Heavy-duty construction 🏭

Accurate dosing even at high pressures

Built with strong, corrosion-resistant materials such as stainless steel, PTFE, and Hastelloy

Higher power requirements

Common Chemicals Used

Corrosion inhibitors

Methanol for injection systems

Scale inhibitors

Catalysts