Boiler Ancillaries

Through our network of partners, O’Brien can provide the following ancillaries as part of a Total Packaged Boiler system or retrofit and upgrade an existing system.

We understand performance and efficiency are important to your steam system. Boiler ancillaries form a vital part of your overall system. Your boiler will need a careful selection of ancillary equipment to perform at its optimum. Initial cost outlay for some ancillaries can easily be repaid over a short time period in increased boiler efficiencies.

Our range of products include


Boiler economisers reuse exhaust flue gas to p re-heat the feedwater entering the boiler. Economisers improve boiler performance while increasing fuel efficiency. O'Brien can supply an economizer to meet your steam system requirements.


Deaerators are used for the removal of oxygen and other dissolved gases from the feedwater to steam generating boilers. Dissolved oxygen in boiler feedwater can cause serious corrosion damage in steam systems by attaching to the walls of piping and forming oxides. O'Brien can supply deaerators to suit your steam system requirements.

Feed Water Systems

From Tanks to Stands, Skids and Pumps, our systems are manufactured and assembled using quality materials as per required specifications.

Feed Water Tanks

Our header tanks are individually designed to match the system requirements. Manufactured in Stainless Steel, our systems are both compact and economical.

Blowdown Vessels

Manufactured as per required specifications, our Blowdown vessels are custom built to your requirements from quality materials. Taking care of your water quality is an easy task that will make all of the difference. It effects the performance of your steam plant and ensures the life span of your equipment can meet and exceed the expectations. O'Brien can provide chemical dosing pumps and systems to give you complete control of your dosing. Our systems can be seamlessly integrated into your system.

Water Softener Systems

Water softening systems eliminate hard water and scale build up by introducing soluble sodium compounds to the water system. Our system provide increased flow rates, additional capacity and continuous uninterrupted softened water. All systems are individually sized to your requirements.

Boiler Stacks

Manufactured as per required specifications, our Boiler Stacks are custom built in Stainless Steel to your requirements from quality materials.