<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14pt"><div>Hi, </div><div>I'm wondering if anyone has had any experience with either pneumatic</div><div>rack & pinion actuators, or rotary vane actuators, operating underwater.</div><div>I need to rotate something through 180 degrees & have it held with a bit</div><div>of clamping pressure at one <span style="font-size: 14pt;">end of the motion.</span></div><div style="color: rgb(0, 0, 0); font-size: 14pt; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 14pt;">One concern is seawater getting in to the gearing of those items, & there reliability. </span></div><div style="color: rgb(0, 0, 0); font-size: 14pt; font-family: HelveticaNeue, 'Helvetica Neue',
Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 14pt;">Another option, could be a normal pneumatic cylinder with an external</span></div><div style="color: rgb(0, 0, 0); font-size: 14pt; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 14pt;">rack & pinion added. Am trying not to have to go to hydraulics.</span></div><div style="color: rgb(0, 0, 0); font-size: 14pt; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 14pt;">Alan</span></div></div></body></html>