Onshore & Offshore Flushing Units
Custom-designed flushing rigs, trusted by the oil & gas industry to meet critical cleanliness specifications — including NAS 1638 and ISO 4406.
At Flowplant, we understand the demands of flushing applications in complex industrial and oilfield environments. Whether you’re operating onshore or offshore, our flushing units are built around the renowned Harben® pump and engineered to meet the highest cleanliness standards — every time.
From high to low viscosity fluids, digital to analogue controls, our rigs are tailored to suit your exact requirements. No off-the-shelf compromise. Just powerful, efficient, and dependable performance where it matters most.
Our Flushing Units
Offshore Flushing Rigs
Robust and compact solutions for offshore rigs and subsea applications. Developed with safety and reliability front of mind.
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Engineered for hazardous environments
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Compatible with subsea umbilicals
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Bespoke control systems
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Proven success in major offshore projects
Onshore Flushing Rigs
Designed for land-based operations where cleanliness, control, and system compatibility are critical.
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Built to meet NAS 1638 / ISO 4406
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Compact skid-mounted or trailer-mounted options
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Handles a wide range of fluid viscosities
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Digital or analogue control interfaces
Why Choose Flowplant?
Need to Meet Stringent Cleanliness Standards?
We’ve got you covered. All Flowplant flushing rigs are designed to meet or exceed NAS 1638 and ISO 4406 fluid cleanliness levels — so you can be confident in system reliability and compliance.
✔️ Trusted Harben® Technology
At the heart of every flushing unit sits our high-performance Harben® radial piston diaphragm pump.
✔️ Custom Built
We work with you to design a system that fits your exact application — not a one-size-fits-all approach.
✔️ High and Low Viscosity Fluids
Designed to handle the full spectrum of flushing fluid requirements.
✔️ Meets Industry Standards
Fully compliant with NAS 1638 and ISO 4406 fluid cleanliness requirements.
✔️ Global Reach
Onshore or offshore, we support customers across the globe.
Ready to Discuss Your Requirements?
Complete the form below and one of our engineers will get in touch to help you find the right flushing unit for your application.
WHY FLOWPLANT?
Flowplant Group Ltd, Gemini House, Brunel Road, Churchfields Ind. Est. Salisbury, Wiltshire SP2 7PU
Tel. 01722 325424 Email. sales@flowplant.com Web. www.flowplant.com