Outdoor natural gas valve and meter assembly coated to prevent winter condensation and icing, from NanoTech Materials' Michigan Cool Touch field case study.

Application

Condensation Control & Freeze Protection for Cold & Cyclic Equipment

Cold equipment surfaces — chilled lines, outdoor valves, gas regulating equipment, anything that runs below ambient — collect condensation and, in freezing climates, ice. Cool Touch is a thin-film insulative coating that stabilizes surface temperature above the dew point, suppressing condensation at the source instead of fighting it with covers and heat tracing.

The Challenge

Covers and heat tracing fight the cold. They don't fix the surface.

Condensation forms whenever a metal surface drops below the dew point of the surrounding air — chilled-water piping, cryogenic-adjacent service, HVAC and refrigeration lines, and gas equipment cooled internally by pressure drop (the Joule–Thomson effect: roughly a 6–8°F drop for every 100 psi a gas regulator or valve sheds). In freezing climates, that condensate doesn't just drip — it accretes as ice on valves, linkages, and instrument ports.

The standard responses are protective covers and electric heat tracing. Both treat the symptom rather than the cause: heat tracing adds continuous energy draw, wiring, and points of failure, while covers can trap moisture against the metal. Neither changes the underlying surface-temperature behavior, so as soon as conditions shift, condensation and icing come back.

The same persistent surface wetness that causes icing also drives corrosion — and where insulation or covers trap that moisture against the metal, it accelerates corrosion under insulation (CUI). Condensation control and CUI prevention are two faces of the same heat-transfer problem.

The Solution

A thin-film barrier that keeps the surface above the dew point

Cool Touch decouples the outer surface from the cold substrate beneath it. By reducing heat flux through the metal and stabilizing temperature across it, the coating keeps the exterior surface closer to ambient air temperature — above the dew point under most operating conditions. With the surface no longer running below the dew point, condensation has little chance to form, and ice has nothing to build on.

It's the same physics NanoTech uses on hot service, running in the opposite direction: a thermal barrier reduces heat flux either way. On a hot pipe, it keeps the touchable surface cool. On cold gas equipment, chilled lines, or refrigeration piping, it keeps the surface warm relative to the chilled substrate. For cold-service and anti-condensation duty, Cool Touch is typically built up in multiple passes to 1–5 mm (40–200 mils) DFT, conforming to valve bodies, fittings, and instrument runs that are difficult to wrap with conventional insulation.

Featured product

Cool Touch

Thin-film insulative coating that stabilizes surface temperature to suppress condensation and ice — without trapping moisture.

Why operations and reliability teams choose Cool Touch

Suppresses condensation at the source

Raises surface temperature above the dew point instead of fighting moisture after it forms.

Stops ice accumulation

Eliminates the surface-temperature conditions that let ice accrete on valves and instrumentation.

Reduces heat-trace dependence

Passive thermal stabilization lowers reliance on electric heat tracing and its energy draw and maintenance.

Doesn't create CUI risk

Seamless, adhered film — no jacket or wrap to trap moisture against the substrate.

Conforms to complex geometry

Spray, hopper, roller, or brush application follows valve bodies, fittings, and instrument ports.

Field-proven

Three consecutive winters of stable, ice-free field performance on outdoor gas equipment in Michigan.

Where condensation control and freeze protection apply

Natural gas meters, valves & regulator stations

Joule–Thomson cooling from pressure drop chills equipment from the inside; humid outdoor air does the rest.

Chilled water piping

Classic anti-sweat application — keep insulated lines from dripping onto floors, ceilings, and equipment below.

HVAC & refrigeration lines

Suction lines and cold equipment that run below ambient dew point year-round.

Outdoor instrumentation in freeze climates

Gauges, linkages, and instrument ports that ice over and become unreadable or inoperable.

Cryogenic-adjacent service

Equipment operating near (not at) cryogenic temperatures where condensation and icing are persistent.

Marine & offshore cold service

Salt-air environments where condensation control and corrosion resistance both matter.

Engineered for cold-service reliability

3 winters

Field-Proven Performance

1–5 mm

Cold-Service DFT (40–200 mils)

480 hrs

Condensation Tested (ISO 6270-1)

720 hrs

Salt Spray Tested (ISO 9227)

Reduced

Heat-Trace Dependence

Made in the USA

Origin

Cool Touch's condensation-suppression performance is field-documented, not just lab-tested: a Michigan natural gas operator applied a 5 mm coating build to outdoor valves, meters, and piping and eliminated major ice accumulation across three consecutive winters in a lake-effect snowbelt.

Recommended product

Primary solution

Cool Touch

Thin-film insulative coating that stabilizes surface temperature to suppress condensation and ice.

Condensation & freeze protection FAQs

Condensation and ice form when a surface sits below the dew point of the surrounding air (and, for ice, below freezing). Cool Touch adds thermal resistance between the cold substrate and the outer surface, reducing heat flux and stabilizing the surface temperature closer to ambient. Keeping the exterior surface above the dew point under most conditions suppresses condensation, so ice has nothing to accrete on.

Stop fighting condensation and ice after they form

Talk to NanoTech about a Cool Touch assessment for cold-service equipment, outdoor valves, meters, or chilled piping. We'll evaluate the assets, scope the application, and return a custom proposal.

Anti-Condensation & Freeze Protection Coating | Cool Touch