Item Port size Selection item 20A (3/4) 25A (1) 40A (1 1/2) 50A (2) 65A (2 1/2) 80A (3) 90A (2 1/2) 100A (4) Symbol 1 2 3 4 5 6 7 8 VXFA2 1 A A q VXFA2 1 A A w VXFA2 1 A A e q Step 1 Select the port size. Step 2 Selection Steps Item Piping Selection item Direct piping type Flange type Flange body I type Flange body II type Symbol A B C D w Select the piping system. Step 3 Item Material With/without silencer Selection item NBR/POM Without silencer NBR/POM With silencer Symbol A B e Diaphragm/Main valve material, Select whether the silencer is mounted. Step 4 For other special options, refer to page 274. Specifications Air Operated Type VXFA21AA�ｮ VXFA22AA�ｮ VXFA23AA�ｮ VXFA24A �ｮ AB Orifice size mmo Fluid Minimum operating pressure MPa Maximum operating pressure MPa Fluid temperature °C Ambient temperature °C Part no. 22 28 Air 0.03 0.7 0.1 .10 (No freezing) to 60 5 to 60 44 53 VXFA25(A,B) �ｮ AB VXFA26(A,B,C,D) �ｮ AB VXFA27B �ｮ AB VXFA28B �ｮ AB 70 80 90 100 Air Operated Type 272 Series VXFA2 Common Specifications/Selection Steps