Mounting a knife gate valve
Mounting a knife gate valve
(OP)
Good evening. Here is my question that I would love some advice on:
I am working with a civil engineer who has selected a knife gate valve to be installed on the flange of a pipe in an earthen dam. The pipe flange is on an angle parallel with the face of the dam. I have been asked to provide a detail to mount the knife gate to a concrete pad. I plan to use epoxy anchors. What I don't know is what the forces would be I would need to design for and how to make the connection from the body of the valve to the anchor bolt.
For reference the valve is an orbinox model ET Series 20. I have contacted the manufacturer but have not been called back.
Any thoughts? Any way I can cross post this to civil since those guys might know more about valves? I started here since my background is structural and it seems to be a structural question.
Thanks for your time!
I am working with a civil engineer who has selected a knife gate valve to be installed on the flange of a pipe in an earthen dam. The pipe flange is on an angle parallel with the face of the dam. I have been asked to provide a detail to mount the knife gate to a concrete pad. I plan to use epoxy anchors. What I don't know is what the forces would be I would need to design for and how to make the connection from the body of the valve to the anchor bolt.
For reference the valve is an orbinox model ET Series 20. I have contacted the manufacturer but have not been called back.
Any thoughts? Any way I can cross post this to civil since those guys might know more about valves? I started here since my background is structural and it seems to be a structural question.
Thanks for your time!






RE: Mounting a knife gate valve
RE: Mounting a knife gate valve
RE: Mounting a knife gate valve
Pressure problems during closing are more common on quick-closing, quarter-turn valves, like a butterfly valve.
Since a knife gate valve is thin and usually not too heavy, it is often sandwiched between two pipe flanges. The mounting pad can support one, or both sides of the pipe next to the valve. The details depend on the size and structural properties of the pipe.
Is this the spec sheet for your valve:
http://www.americancontrols.com/images/pdf/SER20NE...
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RE: Mounting a knife gate valve
RE: Mounting a knife gate valve
Consider the forces that occur when the valve gets jammed up, so the operators grab an extra long pipe wrench and a few other guys to try to force it.
RE: Mounting a knife gate valve
RE: Mounting a knife gate valve
This looks like a general purpose valve, you do need to talk the valve manufacturer about installing it underwater - I doubt if that is a good idea. Knife gate, and other valves need maintenance from time to time. The normal practice for underground applications is to put the valve in a water tight concrete "valve pit" so that it is accessible.
Also, if there are problems with the valve there should be a way to isolate it... without having to drain the reservoir. In the electric utility business this is done by incorporating what are called "stop logs" that can be manually placed in dedicated slots in the dam to isolate the valve from the reservoir.
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www.VacuumTubeEra.net
RE: Mounting a knife gate valve