日本SHOWA正和循环泵YMAS6-12020 200V/10W 日本SHOWA正和循环泵YMAS6-12020 200V/10W An intermittent / cyclic pump unit for resistance type systems 2 discharge volume types available, dispensing 1～3c㎥/cy or 3～㎥/cy 7 cycle time types are available with cycle times of  1, 5, 10, 15, 30, 60 or 120 mins   Resistance type motorized pump unit, available in various cycle times with adjustable output volumes. 2 discharge volume types available, dispensing an adjustable discharge amount of either 1c㎥3～3c㎥ or 3c㎥～6c㎥ of oil.   The adjustable discharge volume further improves the pump’s efficiency.