ISO Mounting Dimensions

Most new ball and butterfly valves are now standard with an ISO mounting interface. This simply means that you can mount the actuator directly to the valve without a bracket and drive dog. This saves time, hassle and money. The below shows the dimensions for ISO5211.

ISO Mounting Dimensions

Flange Type d1 d2 d3 (PCD) d4 h1 max h2 min No of bolts or studs Bolt Thread Max Allowed Torque (Nm)
F03 46 25 36 M5 3 8 4 M5 32
F04 54 30 42 M5 3 8 4 M5 63
F05 65 35 50 M6 3 9 4 M6 125
F07 90 55 70 M8 3 12 4 M8 250
F10 125 70 102 M10 3 15 4 M10 500
F12 150 85 125 M12 3 18 4 M12 1000
F14 175 100 140 M16 4 24 4 M16 2000
F16 210 130 165 M20 5 30 4 M20 4000
F25 300 200 254 M16 5 24 8 M16 8000
F30 350 230 298 M20 5 30 8 M20 16000
F35 415 260 356 M30 5 45 8 M30 32000
F40 475 300 406 M36 8 54 8 M36 63000
F48 560 370 483 M36 8 54 12 M36 125000
F60 686 470 603 M36 8 54 20 M36 250000

ISO Mounting Dimensions 

Flange Type α / 2
F03 to F16 45°
F25 to F40 22.5°
F48 15°
F60