ULVAC, Inc. recently developed and started selling the ECO-SHOCK ES4A, a power saving accessory for dry vacuum pumps that can reduce power consumption substantially by attaching to the dry vacuum pump exhaust line.   Dry vacuum pumps consume particularly large amounts of electricity in production lines. It is of crucial importance to reduce their power consumptionIt has been difficult to reduce power consumption of dry vacuum pumps that are used for frequent pumping down of loading/unloading c...