This is a three bar escape. Our three bar escape has been certified by Ce. each three bar escape has been tested strictly before effort works. we will give you with samples for review. The sample ought to be among seven to fifteen days. Send, we have a tendency to use ocean and air. {the three|the three} bar escape contains a pressure of regarding 3 bar, about 2.65 bar's closing pressure and also the temperature of twenty to ninety degrees below zero. Hydraulic block components appropriate for wall mounted gas boiler.