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It’s hard for a reason. Comparing yourself and assuming things like they do less work etc. is the same thing as judging them. It’s no different than being the gossip around the coffee pot. (Did you notice ‘so and so’ is always late … bla bla bla) You are right – you don’t know what they are...

Maui You are correct. I simply grabbed the quote from the internet. And of course everything is true on the internet - right?[bigsmile] www.Exlar.com

This topic reminds me of the old communication debate between engineers and sales & marketing. One never understands the other. Since I am both - stupidity and frustration is my normal day. Thank God for cold beer and weekends. “Life's hard. It's even harder when you're stupid.” ― John...

Keep in mind that there are more choices than pneumatic actuation for the valve. A servo electric control valve actuator can facilitate much more turndown. For example, resolver feedback provides 1000 counts per rev of the motor. Encoder feedback provides 8192 counts per rev. Electrics are very...

OK, I have researched several valve manufacturers on the web, and found that many do not do a good job of defining what direction the ball should be in for closing. Fisher does specifically say: Standard Flow Direction Forward (into the convex sealing face of the ball) This is what I assumed...

pennpiper, I am referring to a V-port ball valve. I have always assumed the flow is against the convex portion when closed as in this diagram, but I had a manufacture rep tell me otherwise. I want to make sure I understand it correctly. Barb www.Exlar.com Best alternative to hydraulic and...

Does the direction of flow through a V-ball type ball valve vary from manufacture to manufacture? I have gotten two different answers on flow direction from different companies, so now I am questioning my understanding. When the ball valve is closed, should the flow be hitting the concave...

RMW I concur that high torque rotary is not the top application for servo gear motors, but for linear force apps electric servo technology can handle 0 to 80 thousand pounds and up. That’s a big “toy”. Scotch yoke hardware can be used with two linear actuators to get the high torque values you...

I'm a bit late to this discussion, but I’d like to comment on how the market has grown well beyond the conventional MOV electric actuators. It’s time to kill the myths. “Electrics are slow. Even the fast ones are slow compared to pneumatics.” Electric actuators are no longer slow...

It sounds like you have your answer, but I thought I would throw my 2 cents in anyway. An application like this could also be done with an electric actuator made for control valves (not an MOV). The technology is newer to valve control, but has been around for ages in motion control and turbine...

Thanks for all of the feedback. We have found opportunities to replace existing actuators on gate and knife valves when the stem is a linear rising stem (not a rising rotary stem) Reasons for the retrofits varied, so I wanted to get a better understanding of why the industry has issues with this...

Thank you for your feedback. I represent an electric actuator company, but am interested in issues from all types. I find your comment that the "challenge is fast opening or closing" most interesting. Is it full stroke (full open to close) that is most needed, or fast response to a comand to...

I have read several posts that comment on gate valves being hard to operate or difficult to maintain. As a actuator supplier, I am curious as to what the issues are when automating a gate valve, specifically a rising stem valve. As we are always looking to improve, can you comment on the...

Knilter, Contact us directly to discuss. I can provide you with references. www.exlar.com Barb Boynton