start up vent valve 3.50 DN ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ float actuated, for water/air flow rate ^ m3/h [0°C, 1013mbar] at 0,1 bar diff. pressure max permissible operating pressure ^ bar temperature up to +80°C flange connection DIN 2635 body made of steel welded, outside priming coated, PN ^ inner parts and float made of CrNiMo-steel cone sealing NBR, body gasket C4400 max. pressure of the float ^ bar