Automatic hygroscopic air vent for radiators.
Product Description
Automatic hygroscopic air vent for radiators.
White POM (acetal resin) knob.
PTFE seal on thread.
Technical data
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Drawings and specifications
| Part number | Connection | ||
|---|---|---|---|
| 508011 | G 1/8" A (ISO 228-1) M |
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2D drawings
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CALEFFI, 508011.
Automatic hygroscopic air vent for radiators. White POM (acetal resin) knob.
PTFE seal on thread. Connection: G 1/8" A (ISO 228-1) M. Maximum working pressure: 10 bar. Medium temperature range: 5–100 °C. Material: brass.
SCIP code
f8ed74c2-a2af-4fbf-b12e-b3e3b04e7af8
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| 508021 | G 1/4" A (ISO 228-1) M |
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2D drawings
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3D models
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CALEFFI, 508021.
Automatic hygroscopic air vent for radiators. White POM (acetal resin) knob.
PTFE seal on thread. Connection: G 1/4" A (ISO 228-1) M. Maximum working pressure: 10 bar. Medium temperature range: 5–100 °C. Finish: nickel plated. Material: brass.
SCIP code
eedd9c0b-cabe-44c5-8d99-1976a2e03517
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| 508031 | G 3/8" A (ISO 228-1) M |
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|
2D drawings
dwg
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3D models
Tender text
CALEFFI, 508031.
Automatic hygroscopic air vent for radiators. White POM (acetal resin) knob.
PTFE seal on thread. Connection: G 3/8" A (ISO 228-1) M. Maximum working pressure: 10 bar. Medium temperature range: 5–100 °C. Finish: nickel plated. Material: brass.
SCIP code
f9431bc9-fa4c-4e3b-83a7-375a4902e082
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| 508041 | G 1/2" A (ISO 228-1) M |
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3D models
Tender text
CALEFFI, 508041.
Automatic hygroscopic air vent for radiators. White POM (acetal resin) knob.
PTFE seal on thread. Connection: G 1/2" A (ISO 228-1) M. Maximum working pressure: 10 bar. Medium temperature range: 5–100 °C. Finish: nickel plated. Material: brass.
SCIP code
f1fbd46b-68f7-42d0-bbf2-27120eefef0b
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igs
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bim
This application allows for sizing and making calculations for pipes and conduits carrying water or air, respectively for hydraulic or aeraulic plants.
Faq - Frequent questions
An air-filled radiator manifests itself with several characteristic symptoms, such as: uneven heating, noisy operation of the installation and characteristic "gurgling" inside the radiator, or its slow heating. The phenomena mentioned above may become a source of more serious problems related to the functioning of the heating installation.
In the manual version, as the name suggests, to remove air, unscrew the air vent knob and leave it open until water appears. The principle of operation of automatic float vents is similar to automatic vent valves: accumulating air causes the float to fall, which opens the vent element.
The automatic hygroscopic vent works on the principle of the sensitivity of the hygroscopic material to humidity. The key element of this type of vent is the hygroscopic insert, which reacts to the humidity level by changing its volume. Caleffi uses cellulose discs in its automatic hygroscopic vent for this purpose.