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atmospheric pressure is 101.3 kPa. This page is horribly flawed
Agree. As written, this page is directed and refers only to Pneumatic Actuators used in control valves, but misses other important types of valve. I was directed here from "actuator", and previously from "Scotch Yoke". I expected to find a better description of a Scotch-Yoke actuator for ball type valves used in pipelines. As it is, it is not very valuable. Amclaussen, Dec. 30 2011. — Preceding unsigned comment added by 192.100.180.19 (talk) 17:29, 30 December 2011 (UTC)[reply]
