... Price&Quality Pneumatic Control Valve (It can be electric type)Two type: modulating/control type, shut off ... Equal-percentage, Quick-openFeature:1.Using the balancing valve core structure , little axial unbalanced force, large ... sealing type, jacket insulation type, shut-off control typeWorkshop pictures: That are pneumatic type, we ... you can contact us. Pneumatic Control Valve For Water Steam Oil