Triplex Gas Boosters

Dunphy triplex gas boosters provide a robust and reliable solution to the problem of low gas pressure. They comprise of three booster units that, as standard, can provide a pressure lift of up to 82mBar and volumes up to 1300m3/hr. Bespoke gas boosters are available where there is a requirement for a greater pressure lift or volume. They are available in horizontal or vertical configurations.

Dunphy are an ISO9001 accredited company so you can be sure of a high-quality product that has passed a rigorous testing procedure. Our gas boosters meet the requirements of BS 8487, for the design and construction of gas boosters in association with combustion equipment.

A triplex gas booster provides the benefit of various operating modes:

  • Duty/standby/standby
  • Duty/assist/standby
  • Duty/duty/standby

This provides a customer with the peace of mind of having redundancy in the system whilst also relieving pressure on a single device by enabling an auto-rotation of units based on a 7 day timer clock.

Other features include:

  • Cast iron construction for high levels of safety
  • High efficiency, backward bladed fan mounted on a twin bearing supported precision ground shaft
  • ATEX versions available
  • Variable speed drive, to minimise electrical consumption and noise, and soft start options are available
    biogas and towns gas variants are available
  • Bypass loop arrangements can be accommodated for low flow (high turndown applications)
  • SCADA/BMS integration is available

Derivatives built with stainless steel components are available for use with corrosive gases including biogases which emit high concentrations of H2S.

Acoustic attenuation can be supplied where there is a strict requirement for noise reduction.

Dunphy gas boosters are also available in simplex for standard operation and duplex arrangements for duty standby and duty assist operation.

For further information, please contact our sales team at

Why choose Dunphy?

We’re the leading provider of combustion equipment in the UK and have over 50 years’ worth of experience in the industry. This means there’s no better choice for your boiler house repairs. Get in touch with a member of our expert team to learn more.


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