1 1/2" Sanitary Butterfly Valve with Pneumatic Unsealed Actuator

UNSEALED ACTUATOR VS SEALED ACTUATOR: Our sealed actuators are maintenance free and our unsealed actuators are available for preventive/corrective maintenance. Life service of a pneumatic actuator is significantly extended only with a grease re-lubrication and replacement the O-ring seals. HOW TO CHOOSE THE RIGHT ACTUATOR FOR MY APPLICATION? It depend of the number of operation cycles, for example: Some actuator may perform hundreds of cycles per hour, whereas other actuators open and close just once a day. Please take a look at the chart to make a decision (See picture).