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safety device for gear pumps suitable to prevent on the posters, the clamping and the resultant wear or the gall of pa networks of roccole or paddles on theto aspiration if in the latter occur ecces is depression due to the disfun in plant
safety device for gear pumps suitable to prevent on the posters, the clamping and the resultant wear or the gall of pa networks of roccole or paddles on theto aspiration if in the latter occur ecces is depression due to the disfun in plant