Marflow Hydronic Systems


Due to Covid19 we are primarily operating from home during this time so please bear with us. All communications will be monitored but it may take us a little longer to get back to you. 

Please note:the old address was updated to

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Are you regulated?

Sometimes little things get overlooked.

Make sure you’re well-regulated with Filtermate full port ball valve with patented double regulation and indicator function. DZR body and female screwed BSP ends.

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Want to Save?

With products that save you time, money and energy, look no further than Marflow Hydronics.

Across our range of Prefabricated products, Pipeline Valves, Control Valves and Energy Valves, we have solutions that offer a range of savings. Download Milo’s Quest to find out more about how he helped save a customer!


We have it all wrapped up!

Propelled by customer demand, we are pleased to introduce our new all-weather protection for a range of actuators.

Easily removeable, insulated, heat and water resistant, standard or bespoke.

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Large PICVs for large line sizes

No matter how big the problem is there is always a solution.

Developed to meet the needs of designers, installers and maintenance engineers Marflow Hydronics offer an extensive portfolio of pressure independent control valves from ½” to 6″.

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Who is Marflow

Part of the multinational Pettinaroli Group, we are specialist solution providers for the balancing, controlling and metering of water distribution systems in the HVAC industry. Marflow Hydronics is dedicated to creating and supplying innovative and efficient products that meet the rapidly changing needs of buildings and users alike.

We supply an extensive portfolio of products, including the Xterminator range of valve assemblies, Axial and Rotary Pressure Independent Control Valves (PICV), Filterball Valves, Terminator Valves, Ball Valves and Manifold Systems.

Supporting You

Our service and support team consists of highly skilled technical sales engineers who have a wealth of experience in design, installation and commissioning. We support designers and help them select and specify the best products for the application.

From challenging water distribution problems to advice about various pipe layouts and configurations, our team has the expertise and experience to assist in making informed decisions with customers on the best solutions available.

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