4. Piston Actuator PA series Single acting and Double acting pneumatic Piston Actuators available in 5 models. PA-150,PA- 250,PA-330,PA-400 & PA-500 with corresponding effective area as 180,500,830,1270 & 2000 sq.cm. Travel- 38mm to 178mm Spring Range- 0.2-1.0 bar, 0.4-2.0 bar, 0.8-2.4 bar etc. PA series Actuators can be providing with SMH- Side mounted Hand wheel as manual override. This is applicable Both for Single as well as Double acting actuators. All actuators can be supplied for working in NUCLEAR application. 5