The series H·2H·H3 rotary piston vacuum pump is a sort of vacuum pro-duction equipment suitable for pumping ordinary gase and condensable gases(when a gas ballast used).
The series H·2H·H3 rotary piston vacuum pump is a sort of vacuum pro-duction equipment suitable for pumping ordinary gase and condensable gases(when a gas ballast used).
H3型系列滑阀式机械真空泵是抽除一般性气体或含有少量可凝性气体（此时应使用气镇）的真空获得设备之一。