Brass breather plug with specially-designed internal valve calibrated to 0,15 ÷ 0,30 bar. Opens at intervals and it allows venting of internal pressures created by fluid turbulence and it not allowing the entry of foreign bodies. Supplied without external seal.
Operating temperature : -20°C + 100°C.
On request with nickel-plating treatment, with different calibrations or in aluminum alloy.