PCM Industry

Diaphragm pumps - PCM Lagoa

The Lagoa series of reciprocating pumps is designed for metering a wide variety of products, including minerals, paper and oil, across a range of industries.

Lagoa reciprocating pump principle

The Lagoa reciprocating pump is composed of a membrane which is connected to a piston. Its alternating movement successively fills and empties the pumphead. As illustrated in the diagram below:

  • The backward movement of the membrane opens the bottom check valve to allow entry of the fluid, which fills the pumphead

  • The membrane's forward movement closes the bottom check valve, opens the top check valve, and expels the dose of liquid


  • Foot valves
  • Injection rod
  • Safety and retention valves
  • Pulsation dampers
  • Ready to meter assemblies
  • Multiplexing

Find the new Industry catalogue here. 

  • PCM Lagoa™ diaphragm dosing pump
  • PCM Lagoa™ diaphragm dosing pump composing a system

Advantages of Lagoa range

There are many advantages to choosing a Lagoa reciprocating pump, thanks to our innovative design and drive.

Lagoa reciprocating pump design

  • Simple and robust construction
  • Reliable metering
  • Adaptable – our reciprocating pumps can meter a wide range of fluids
  • Simple to maintain
  • Dry running

Electro-mechanical drive

  • Does not cause and is not affected by interferences
  • Reduced mechanical and hydraulic shocks
  • Silent operation

Performances of Lagoa dosing pumps

  • Maximum flow : 315 l/hr per pumphead
  • Adjustable from 10 to 100%
  • Maximum pressure: 12 bar
  • Maximum temperature: 90°C
  • Precision: ± 1%
  • Linearity: ± 3%
  • Deliverable within 2 to 6 days