Water capillary mats are the key element of the Greata Capillary tube Mats system.
The capillary tubes are made from high quality polypropylene (PP-R) – an environmentally friendly and safe plastic with excellent thermal management and elasticity properties.
Diameter of capillary tubes – 3,35mm or 4,3 mm
Basic types of capillary mats:
Type G
A – distance between capillaries – 10/20 mm;
B – main pipes PP-R d20x2mm, PN10 (at both ends of the capillary mat)
L – length of capillary mat.
Data sheets for Type G capillary mats 
Type S
A – distance between capillaries – 10/20/40 mm
B – main pipes PP-R d20x2mm, PN10 (at one end of the capillary mat)
L – length of capillary mat.
Data sheets for Type S capillary mats
Technical data
| Raw Material: | PP-R (Polypropylene Random Copolymer) |
| ø Main pipe: | 20 x 2 mm |
| ø Capillary tube: | 4.3 x 0.8 mm vai 3.4 x 0.55 mm |
| Distance between capillary tube: | 10-20- mm |
| Length: | Type S: 600 – 7500 mmType G: 600-15000 mm |
| Width: | 150 – 1000 mm |
| Spec. exchange surface: | 0,72 – 1,05 m² / m² capillary mat surface |
| Spec. weight: | ca. 190 – 880 g / m² capillary mat surface |
| Spec. water capacity: | 0,2 – 0,57 l / m² capillary mat surface |
| Spec. total weight: | ca. 390 – 1450 g / m² capillary mat surface (without main pipes) |
| Colour: | Blue,green, light grey (can be tinted, if necessary) |
| Maximum temperature in the system: | +51° C |
| Optimal input temperature for heating: | + 28-32° C |
| Optimal input temperature for cooling: | + 16-18 ° C |
| Optimal pressure in the system: | 2-4 bar |
| Factory test pressure: | 25 bar |
Additional advantages in safety, maintenance and quality:
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- Limestone does not occur in water capillary tube mats; limestone forms at +62°C – the water in the water capillary mat system is at max. +31°C for heating and at max. +17°C for cooling.
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- Mud does not occur in water capillary tube mats; mud results from corrosion – the water capillary tube mat system uses only corrosion-protected components made from PPR, stainless steel, brass or bronze.
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- Prior to operation, the safety of the water capillary tube system is verified with air pressure at 21 bar and water pressure at 11 bar; the system is filled only once.
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- Water capillary tube mats can be easily repaired; a capillary is cut and both ends are welded – with no effect to the heating/cooling output.
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- Water capillary tube mats do not require maintenance and have a safety guarantee of up to 55 years.
