LVA10 LVA20 LVA30 LVA40 LVA60 12 22 LVA50 Model Orifice diameter 2 4 8 20 Body material Note 1) Port size Stainless steel (SUS316) 1/8 1/4 1/8 1/4 1/4 3/8 3/8 1/2 1/2 3/4 1 PAX PPS Valve type PFA PB Type Symbol Basic type N.C. PA PB PA N.O. A B B A B A PB Double acting N.O. Double acting N.C. With flow rate adjustment PA PA N.C. B A B A Double acting PB Double acting N.C.