Is there a better dump valve?
I have cable operated Valterra/Bladex dump valves that failed to operate. I know that the cable type can be troublesome, so I explored the reason for the hard operation. I found the cables were not ...
Forum Discussion
Well of course there are better valves. But probably aren't ones that you will be buying. Generically that sort of valve is a "knife edged gate valve". And there are a multitude available in industrial catalogs: McMaster-Carr
Those are heavy metal ones and a bit pricey you'll notice. But they do have PVDF seals. Most valving of this sort shows up in the manufacturer's specialty catalog and not general catalogs. They are available in many materials from engineering plastics thru exotic alloy's like Carpenter-20. You can get all sorts of operators from handwheels thru electric or pneumatic operators.
Some examples:images
When I was buying things like this we thought nothing of spending $600 or more for a small 1 inch valve. The prices go up rapidly when you add options.
Just remember that: "An engineer is someone who can do a $100 job for $10" and that's why the valves on RV's are not top of the line. They do the job at a low cost.
Those are heavy metal ones and a bit pricey you'll notice. But they do have PVDF seals. Most valving of this sort shows up in the manufacturer's specialty catalog and not general catalogs. They are available in many materials from engineering plastics thru exotic alloy's like Carpenter-20. You can get all sorts of operators from handwheels thru electric or pneumatic operators.
Some examples:images
When I was buying things like this we thought nothing of spending $600 or more for a small 1 inch valve. The prices go up rapidly when you add options.
Just remember that: "An engineer is someone who can do a $100 job for $10" and that's why the valves on RV's are not top of the line. They do the job at a low cost.
