How to check fit and access
Check for visible condensation at representative operating conditions, then repeat after removal and refitting.
See inspection and acceptance checks →Chilled water
Removable chilled-water valve insulation covers
Plan a continuous vapour seal through seams, penetrations and pipe insulation transitions.
Chiller rooms and chilled-water valve stations where condensation is a concern.
Follow the vapor seal across the valve
Review the stem collar, removable seam and both transitions to the adjacent pipe insulation.
- Closed-cell elastomeric core
- Select the core thickness using fluid temperature, local humidity and the actual fitting geometry. Check the coldest outer points, including seams and penetrations.
- Vapor-control system
- Continue the vapor-control path across the stem collar and pipe transitions. Whether a separate facing is needed depends on the selected material system and service conditions.
- Serviceable seam
- Agree how to reseal the cover after removal. Inspect the refitted joint under representative humid operating conditions.
Product views and construction details
Compare alternate views and see how the jacket opens, fits or fastens.
Design and specifications
A continuous vapour-control layer around the stem, closure and end transitions addresses weak points that a plain fabric wrap leaves open.
- Shape and construction
- Serviceable insulated shell with resealable seams and end transitions
- Facing, core and hot face
- Closed-cell elastomeric core with compatible vapour-control facing, sealed stem collar and closed-cell pipe-insulation transitions.
- Nominal core thickness
- Calculate from minimum fluid temperature, maximum ambient humidity and the actual fitting geometry; verify the resulting thickness fits the access envelope.
- Installation and closure
- Resealable vapour-control overlap with an agreed method for restoring the seal after service.
- Dimensions to confirm
- Fitting OD and width, existing insulation thickness, stem geometry, minimum water temperature, maximum ambient temperature and RH.
These are options for a custom quotation. Confirm the assembled materials, dimensions, service limits and finish in writing.
Review the construction detail
review the closed-cell layer and how the vapour seal joins adjoining insulation.
Operating temperature and expected result
Keep the coldest accessible outer surface above site dew point under agreed humidity conditions; inspect seams and metal penetrations.
Agree the conditions, measurement points and target for the proposed cover before quoting. Record the complete assembly’s approved service limits separately from the target outside-face temperature.
Compare thickness, surface temperature and heat loss →Chilled water · dew-point example
Use the air temperature and relative humidity around the installed fitting. With 7 °C chilled water, the design must keep the coldest exposed jacket surface above the site dew point, with an agreed margin.
This indoor estimate uses the Magnus formula over water. It establishes a surface target. Thickness depends on fitting geometry, conductivity and the vapour-control design. Check seals, stem openings and pipe transitions after refitting.
Armacell condensation-control bulletin · WMO humidity formulaWhat to send us
Send minimum fluid temperature, ambient temperature and humidity, existing insulation details and access frequency.
Include a drawing or scaled photos, quantity and delivery location. Once the key measurements are available, we can review a CAD drawing or annotated design together.
Equipment in the field
Use a site photo like this to show nearby pipework, access obstructions and service points. Send your own photos from two angles, with a scale reference in the same plane as the dimensions.
Prepare a photo set →
