PUF & PIR Products
Cold & Cryogenic Insulation
Cold insulation requires a high level of craftsmanship; any small non-system application or vapour barrier penetration can cause significant icing. Faults cannot just put the process at risk and influence the quality of products but may also lead to considerable energy and evaporation loses or unwanted pipe corrosion.
The liquefaction, storage and transportation of cryogenic media such as LNG (-160°C) or LPG requires high-performance insulation systems. Parameters such as thermal stresses, vibrations and required safety provisions have to be considered when engineering, manufacturing and installing cold insulation systems for these applications.
Insulation systems for liquid oxygen (-183°C) and liquid nitrogen (-196°C) require again a different kind of approach. For example, the insulation and cladding of liquid oxygen vessels or pipes must be absolutely grease free to avoid any risk on spontaneous ignition.
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Often, multi-layer constructions consisting of different materials, protective layers and at least one but possible more vapour barriers are needed to achieve an adequate cold insulation. Materials like Polyisocyanurate (PIR) and Polyurethane (PUR) rigid foam or cellular glass may be used in these layers and a cladding of e.g. stainless steel, aluminised steel or UV cured GRP is applied to provide the necessary weather protection.
Thermal, cold and cryogenic insulation can be installed on piping systems with large and small diameters as well as mobile containers, ships, off shore applications, vertical cryo tanks and large storage tanks.
Rockloyd is a precisely engineered Resin Bonded Fibrous Insulation to offer maximum resistance to heat passage. Rockloyd fibres are spun from selected rocks, melted at 1600°c and blended to a carefully adjustment chemical composition. Its centrifugally spun fibres have a diameter 1/20th that of human hair which are felted using State of the Art Technology into bonded and cured mattress to optimum density and resilience. Over 25million sq.mts. of Rockloyd Insulation are in services in prestigious projects within the country saving millions of tones of fuel year after year.
Rockloyd, like all scientifically processed fibrous insulants is composed of fibres which are laid in the optimum configuration to offer maximum resistance to heat flow. To retain these exceptional properties up to the point of end-use, fibres are interlocked by lightly bonding them together using a thermosetting binder. Subsequently, matts are factory stitched to specified wire mesh using a continuous stitching machine to permit a ready-to-use configuration.
- Higher Thermal Performance, as it is made out of Rockwool and not slagwool.
- Eliminated setting and sagging.
- Longer Life, permitting reuse after removal during maintenance.
- Environment Friendly, as there is no chicken feathering (Which normally pollutes the environment). It is ECO friendly to personnel due to the chemistry of fibres.
- Uncontaminated, as manufacturing is totally a DRY Process.
- Application Friendly, as it permits very fast installation.
- Can feature Resistance to capillary if needed
Rockloyd mattress manufactured from select rocks to state of Art Specification fully conform to local & International Standards such as.
Approved for A-60 Class insulation*
* The only product in India.
|Standard Densities||100, 120 & 150 Kg/m3|
|Application Temperatures||-100°c to +800°c|
|Standard Thickness*||25, 40, 50, 60, 65, 75mm|
|Standard Size||1520 x 1220 mm|
* Other thickness from 20 to 100 mm in steps of 5mm can also be made available.
Rockloyd fibres, in the first place, are devoid of impurities like Halides (Chlorides & fluorides) and Sulphides which are commonly found in other materials such as Calcium Silicate. This is due to the fact that Rockloyd fibres are manufactured by a dry manufacturing process and its faint alkalinity actually fight against corrosive reactions. It meets various critical specifications including ASTM C 795 requirements where specified.
This feature is responsible for its exclusive selection for critical applications such as Nuclear Power plants, ship building and Railways coaches where corrosion resistance is of vital significance.
Incombustible when tested as per IS:3144 Melting point of fibres is above 1000°c (1825°F)
Compression Resistance & Sound Absorption
Excellent compression resistance & sound absorption by virtue of its scientific fiber lay pattern which ensures controlled dispersion of air pockets.
Where stress corrosion is there on austenitic stainless steel, inhibited Rockwool Mattressess are used. Inhibition is done by spraying sodium silicate of adequate quantity in order to lower chloride content as low as 2ppm.
Water Repellent Grade
It is special grade Rockwool materials wherein special type of chemical is added during its manufacturing process to make it water repellent grade. For this property it is tested as per BS:2972 with partial immersion in water for 48hrs. which exhibits superior results as compared to normal grade Rockwool.
Resin Bonded Rockloyd material is the only one to offer the LOW THERMAL CONDUCTIVITY to weight ratio among all industrial insulants thus minimizing the total load on the applied equipment.
Cold Insulation Products
Supertherm Pipe Support
Rigid Polyisocynurate foam insulation, a specialist low temperature and cryogenic insulation which has low thermal conductivity, closed cell, moisture resistance and enhanced compressive strength at low temperature, whilst not comprising its elasticity so as to avoid cracking.
Better extreme-temperature performance
Best-in-class insulation performance
Ease of application
Easy-fit polyurethane foam for low temperature applications & chilled water pipeline insulation.
Factory molded to any shape
All-weather all-seasons insulant
Dramatically reduced installation time
Supertherm Pipe Support
A heavy duty easy to install prefabricated pipe support system of truly revolutionary proportions Supertherm Pipe Supports are made from specially formulated chemical systems that result in high density rigid polyurethane foam. The very nature of the material immediately yields several advantages.
Wide density range possible
Pre-engineered at factory
Dramatically reduced installation time
No water penetration
Good fire resistance