● Best suitable for operating where strength is required or in corrosive atmosphere. ● Stainless steel whose corrosion resistance is equivalent to SUS303 is adopted. Copper alloy free material for metal parts. ● HNBR for seal rubber against low ozone concentration. ● Medium : Air ●Operating pressure : 0.1~0.9 MPa ● Check valve opening pressure : 0.05 MPa ● Operating temp. : 0~60ºC (No freezing)