Experienced Petroleum Engineers

Petrol & Diesel Installation Specialists

– Since 1955 –

Welcome to Deallow Ltd – Specialists Petroleum Engineers Since 1955

With over six decades of hands-on experience in petrol & diesel engineering, Deallow Ltd is a trusted name in the supply, installation, maintenance, and decommissioning of fuel systems across the UK. From refuelling depots and industrial sites to agricultural operations and private installations, we deliver practical, compliant solutions backed by four generations of expertise.

Petroleum Engineers, Fuel Equipment Supply & Installation, custom-built flow indicators.

Fuel Equipment Supply & Installation

We offer a wide range of fuel storage tanks, pumps & nozzles, and terminals, tailored to your operational needs. Whether you’re installing a new system or replacing worn parts, we’ll supply the right equipment — from hoses and flow meters to fully integrated monitoring terminals.

We also provide custom-built flow indicators and couplings, designed for railcar offloading and inline flanged systems, offering quick visual assurances where it matters most.

Maintenance & Servicing

Our scheduled routine maintenance visits help you avoid costly breakdowns by keeping your systems in top working order. We carry out thorough inspections, servicing, and safety checks on everything from fuel pumps to monitoring terminals — ensuring your equipment remains efficient, compliant, and long-lasting.

For added peace of mind, we also offer a tank cleaning service, essential for maintaining fuel quality and system performance.

Routine maintenance visits and  tank cleaning services.
Decommissioning & Dismantling - tank drainage and cleaning, removal pumps and pipework.

Decommissioning & Dismantling

When it’s time to retire a system, we offer secure and fully compliant decommissioning services. From tank drainage and cleaning to the removal of redundant pumps and pipework, we handle every aspect safely and efficiently — with full attention to environmental standards.

Fuel Terminals, Flow Indicators & Meters

Our range of high-performance equipment includes:

  • Fuel Terminals – Advanced monitoring with computer-link capability
  • Flow Indicators – Visual confirmation for railcar tanker offloading
  • Flow Meters – Reliable, accurate readings for all fuel types

Whether it’s off-the-shelf or custom-fabricated, we’ll provide a solution that fits your application perfectly.

Environmental Surveys & Reports - professional environmental consultations and reports.

Environmental Surveys & Reports

We provide professional environmental consultations and reports for new installations, upgrades, and decommissions. Our written assessments by qualified Petroleum Engineers help ensure compliance with regulations and environmental best practices — a vital step in protecting both your site and your reputation.

Why Choose Deallow Ltd?

  • Over 70 years of industry expertise
  • Family-run with a reputation for reliability
  • Custom-built solutions for complex needs
  • Unbeatable safety record since 1955
  • Personal, professional service — large or small

Get in Touch

Whether you’re planning a new fuel installation, need urgent servicing, or want advice on regulatory compliance, we’re here to help. Contact Deallow Ltd today — your fuel systems are in expert hands.