A simpler way to save energy, protect your team, and meet your sustainability goals
Running a steam system comes with constant pressure. You’re balancing energy costs, safety risks, compliance requirements, and sustainability targets. That’s where Spirax Sarco insulation jackets come in.
Minimise heat loss
Save energy, reduce costs
Reduce safety risks
Enhance operational efficiency
Install quickly, maintain simply
Reduce carbon emissions
These insulation jackets are not simply accessories —they’re practical tools designed to help you solve real problems. They reduce heat loss, which means lower energy bills and fewer carbon emissions. They are also vital in shielding hot surfaces and protecting your teams. And because they’re custom-built for Spirax Sarco components, they fit perfectly, perform reliably, and have a long service life, with proven ROI.
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Effective across every steam-using industry, especially those with a high energy consumption, our insulation jackets offer a simple, effective way to improve your steam system’s performance—without disrupting your operations.
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Glass fibre coated outer and inner skin
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Kevlar draw cord (rated to 350°C)
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High temp hook and loop tape
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Dense mineral fibre insulation material
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Bespoke fitment to Spirax Sarco products
Example: Estimated annual savings by insulating a reducing valve DP27 DN50 at 10 bar
Insulating a single component can deliver impressive results. For example, insulating a DP27 DN50 reducing valve at 10 bar saves approximately 2.48 tonnes of CO₂ per year, which is the carbon absorption equivalent of around 110 mature trees. It also prevents the loss of 48.68 GJ of energy—the same amount an average UK resident consumes over half a year —and conserves 17 m³ of water, equal to the annual water use of 330 people. With a return on investment of less than a year (around six months), this simple step offers rapid payback and significant sustainability benefits. And remember, this is just the impact of insulating one component.
Cut energy waste. Save money.
Every bit of heat lost from your steam system is energy—and money—gone. Our insulation jackets are built to keep that heat where it belongs. That means lower fuel bills, reduced carbon emissions, and a more sustainable operation.
The role of insulation in steam system efficiency
Insulating surfaces above 40°C—including boilers, steam distribution lines, condensate return pipes and system fittings—is essential for maintaining operational performance. Effective insulation can reduce energy losses by up to 90%, helping to preserve steam pressure and improve overall system reliability. See below for more detail.
Energy savings translate directly to carbon reduction – each kilowatt-hour of thermal energy wasted generates approximately 0.18 kilograms of CO₂ equivalent when you're raising steam from natural gas."The Department for Energy Security and Net Zero
Keep your team safe
Hot surfaces are a hazard. Our jackets act as a protective layer, reducing the risk of burns and helping you meet safety standards. They’re a simple way to show your people you care.
Built for your equipment. Built to last.
These aren’t generic covers. Each Spirax Sarco insulation jacket is tailor-made t.o fit our components precisely. That means better insulation, longer life, and fewer maintenance headaches. They’re tough and designed to handle high temperatures, harsh conditions, and daily wear.
Easy to install. Easy to live with.
We know downtime costs you. That’s why our jackets are designed for quick installation and straightforward maintenance. Clear labelling makes inspections faster, and durable fastenings mean they stay in place, even in demanding environments.
Designed for your industry
Whether you're in food and beverage, pharma, healthcare, or heavy industry, we’ve got you covered. Our jackets are available for a wide range of Spirax Sarco components—from pressure reducing valves to steam traps and condensate recovery units.
Avoid burns and energy losses with reusable insulation jackets
Burns are one of the most common workplace injuries for people who come into contact with steam systems. With Spirax Sarco's handy reusable insulation jackets, you effectively reduce the risks in your work environment and at the same time significantly save energy.
Identify energy thieves - isolate your valves
A hot valve is an occupational safety risk, and a hot uninsulated valve also wastes large amounts of energy. However, both problems can be solved with Spirax Sarco insulation jackets.
The easiest way to significantly save energy
Did you know that the heat loss of an uninsulated valve can correspond to the annual energy consumption of an average household. Spirax Sarco can help you calculate the payback period and insulate the valves with reusable, easy-to-install isolation jackets.
Discuss your needs with our experts
Helping you achieve your objectives:
Spirax Sarco can be your trusted partner, helping you to achieve the goals you are driving towards.
Supporting your sustainability journey:
Whether you are looking to optimise, manage or decarbonise, Spirax Sarco can support you with your journey.
Smarter energy management starts here
From early-stage monitoring to long-term carbon reduction planning, our specialist-led approach delivers technical rigour and measurable results.
Steam Systems Audits
Choose a steam system audit to benchmark your overall system. We'll scale an audit to your needs, from assessing just a single plant room, right up to your entire steam system.
Your path to a fully decarbonised steam system starts here
Achieving sustainability in steam helps us all move toward the global ambition of carbon neutrality, and as the global leader in steam system excellence, we are dedicated to supporting our customers in finding their path to the net zero goal.