TSSR / Breather plug with valve and o-ring.

Brass breather plug with specially-designed internal valve calibrated to 0,15 ÷ 0,30 bar. It opens at intervals and it allows venting of internal pressures created by fluid turbulence. Besides the advantage of not allowing the entry of foreign bodies, allows the overturning during shipment without any fluid leakage. Supplied without external seal. Operating temperature : -20°C + 100°C.