Electrical limits

[chevynut]

I believe DMH are a butterfly valve. It would be interesting to hear a comparison of the different brands.

Yes the DMH are a butterfly valve, and I think that design is less prone to hanging up.

[Rick_L]

I didn't realize anyone was selling anything other than a butterfly valve.

For me, (and mine have never been used) the design and precision of the DMH valves seem adequate. I do know some satisfied users - one has had his several years and they've worked flawlessly with no tricks needed for open/close.

Olky55, do you have any photos or a link on the gate valve design?

[OLKY55]

https://www.youtube.com/watch?v=qi1VAtl6M9g

There seem to be complaints about most every brand online.

[chevynut]

- one has had his several years and they've worked flawlessly with no tricks needed for open/close.

Nothing is "needed", it's a matter of convenience. But let me ask you this....when you open your windows would you rather hold the switch down until they're down all the way, or do you like the more modern one-touch controls where all you have to do is tap the switch to make them go down? I like the latter, and I think it would be cool for the cutouts to work the same way.

[chevynut]

Olky55, do you have any photos or a link on the gate valve design?

http://www.jegs.com/i/Dougs-Headers/...ductId=1282659

[Rick_L]

Thanks for posting that, I've never seen that style before.