Automatic radiator vent with elbow connector "Aercal" model 504

• Operating pressure: max. 10 bar
• Made of brass

• DN15 (½”) ET
• Hygroscopic safety cap
• Chrome-plated
• Blow-off pressure: max 2.5 bar
• Operating temperature: max. 100 °C

Description of hygroscopic cap:
The ventilators 90 046 57/58, 90 035 05 and 90 601 44 are equipped with a hygroscopic safety cap. This is provided with cellulose fibre discs, which swell upon contact with water and close the valve. This prevents possible water leakage and the resulting damages.