Zero-logoZERO is the flexible thermoplastic and vibration-proof system for air conditioning and refrigeration applications. Thermoplastic, flexible and reliable, can defy the traditional systems. Equipped with brazing fittings with heat dissipator, is made of anti-abrasion material.


Performance and condition of use

Working pressure
Burst pressure
Working temperature
WP BP WT – °C WT – °F
maximum working pressure minimum bursting pressure allowable temperature
bar MPa psi bar MPa psi min max min max
50 5,0 724 250 25 3620 -45 +110 -49 +230

Permitted Fluids^ to top

Type of Gas Type of Oil
HFC (R134a, R404A, R407A, R407B, R407C, R410A, R507) polyol ester based
HCFC (R22) mineral oils
CO2 polyol ester based

Classification according to Directive 97/23/CE^ to top

DN Classification
15 – 21 – 28 paragraph 3 article 3
38 – 54 category I (marking )

Pressure drop and permeability^ to top

DN Pressure Drop (bar/m) Permeability at 100°C (g/year)
10 m3/h 20 m3/h 50 m3/h 100 m3/h R134a R407C
15 0,0054 0,0217     9 12
21 0,0012 0,0047     14 19
28   0,0015 0,009   23 32
38     0,002 0,0079 20 38
54     0,0003 0,0014 29 40

The permeability value provides an indication of the maximum Ieakage tested at constant conditions of use of the hose at 100°C / 212°F for an entire year. The real permeability value must therefore be measured considering the actual working time and temperatures to which the hose is subjected, keeping in mind that significant and detectable values are obtained with temperatures of more than 50°C /122 °F and that the permeability increases proportionally to the temperature. The permeability values obtained at 100°C / 212°F for the GOMAX hose range, of approximately 1 kg/m2/year, are much lower than those set in the standard UNI EN 1736, which foresees a maximum permeability value of 5 kg/m2/year.

Fittings in the ZERO vibration absorber range^ to top

Infinity hose fittings: brazing fittings with heat dissipator radiator
Material Used Surface Coupling process Filter material
drawn steel zinc plating hard brazing silver alloy with low melting point
Inner tubeThermoplastic polymer
ReinforcementPolyester braid of hogh tensile strenght with hogh modulus.
CoverBlack polyester braid of high textile strenght, abrasion resistant
FeaturesLightweight – Compact design – High flexibility – Vibration absorber
Temperature range-45 °C to +110 °C (-49 °F to +230 °F)