"How it can be considered "Open" is beyond me. Calling it "voyeur-ed" would be more accurate." pka LeroyMac, SkyIsBlue, fka Freddy-B, Mongo, IndyBlue
BIG Government = More Dependents http://threedevilskennel.com/ - not my website.
Versatile Hunting Dog Federation - www.vhdf.org/
I have seen them used once before in a chiller plant which also had Keystone actuators. As far as service I never had a problem with them sticking, etc unlike the keystone. I asked the original project manager and he said the Bettis were more expensive but seemed to have less issues then the keystone.
We have used them a bunch of times as mentioned above, usually in chiller plants on condenser water and chilled water piping with Keystone and Bray valves and never had any problems. If I remember they have a few models that offer quite a bit of torque.