The second highlight is the pneumatic driven reflux divider. This replaces the old fashioned reflux divider design which uses a glass plunger falling into the valve seat; also made of glass. This type of construction will/can leak within a short time.
Therefore, they have to be grinded frequently and the grinding needs someone with experience in working with glass and takes a great amount of time.Our reflux divider has a stainless steel or ceramic rod with an O-Ring at the bottom. This O-Ring is pressed into the valve seat with a force of approximately 1 kg and seals the valve with it’s soft surface.
This construction offers a leakage free operation. The reflux divider can be dismantled for O-Ring replacement, which takes less than two minutes. On average, this job has to be done after 25 distillations (using inexpensive Viton O-Rings).