2" D-040 Combination Air Valve with thermal protection
ARI Aquestia
5D40V-02NTN5-009
ex Shipping kg
    Delivery time:2 Weeks
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  • Description
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The THERMO-PROTECTION is used to isolate the air  valve and the liquid inside the air valve against different temperature levels between the pipeline and the surrounding atmosphere.If the THERMO-PROTECTION is used as an "anti-freeze-device" the input of thermal energy into the air valve by liquid-exchange between pipeline and air valve is compulsory.Only by a sufficient liquid exchange an anti-freeze protection is guaranteed at low temperatures (well approved down to – 20°C [-4°F].

The level of the liquid-exchange within the air valve is dependent on the flow-velocity of the pipeline on which the air valve is installed, as well as the distance between the pipeline and the body of the air valve.

Material specification:
Material: foamed PU (foamed organic isolation material)temp. 
Range: -30°C <>  +80 °C [-22°F <> +170°F
Density:    ca. 30 kg/m³ [0.3007 lb/gal]
Conductivity:   ca. 0,20 W/mK [0.1156 BTU/h∙ft∙°F]
Flame-class:  B2

D-040 Air Valve Thermo Protection, Drawing   

D-040 Air Valve Thermo Protection, Brochure 

D-040 Combination Air Valve Brochure