| You can use it neatly and expediently, it can produce a negative pressure up to 635 mm Hg vacuum. With a release valve, it\'s very easy to operate. Pumping rate of 15cc/stroke and 3psig(.21bar) for -0010, pumping rate of 36cc/stroke and 7psig(.48bar) for -0020, positive pressure at the exhaust port. |