Directional Valves(IN-LINE CHECK VALVES) Propiston Propiston ไฮดรอลิ จำกัด The Directional Valves specification of our Hydraulic Pumps and Valves is the same with Yuken's, but the price is more attractive. We have our own factory in Taiwan directional valvehydraulic valvesvalves รายละเอียด ติดต่อ