The product adopts die-cast aluminum alloy shell, HNBR/NBR composite seal to strengthen airtightness, installation width 18mm, weight about 160g, adapt to ISO 15407-1 standard 18mm base, save layout space. Based on piston slide valve structure, mechanical spring return, working pressure - 0.09-10 bar, pilot pressure 3-10bar, fast response, opening time 14ms, closing time 39ms, single base rated flow 550L/min, to meet the needs of small pneumatic actuators.