Materials Breather body in die-cast UNI EN 1706 AC - 46100 DF aluminium alloy. Support tube in FE33 UNI 7288-74. Flame trap between pipe and breather body in AISI 316 stainless steel. Breather body fixed to AISI 304 stainless steel tube with locking grub screw protected by plastic plugs. Breather body exterior protected with RAL 1004 golden yellow coloured stove-enamelled synthetic paint. Support tube exterior protected by green RAL 6010 color plasticating treatment. Characteristics Quick probe access opening mechanism with special profile key, removable when in the locked position (max. diam. of probe inlet 10 mm). Applications For gas pipes at road or rail crossings, vent wells or small underground chambers with safety valve. Types EM48 - EM60 For medium or low pressure lines. Types EM89 For high pressure lines.