The product adopts die-cast aluminum alloy shell, HNBR/NBR material seal to achieve soft seal, compact and durable structure, installation width 18mm, weight 163g, suitable for ISO 15407-1 standard 18mm base installation. Based on piston slide valve design, mechanical spring return, working pressure coverage - 0.9-10 bar, pilot pressure 3-10bar, efficient response, opening time 12ms, closing time 38ms, single base installation rated flow 550L/min, to meet the needs of small and medium-sized gas circuit.