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  #121  
Old 08-04-2012, 10:38 PM
muddywater muddywater is offline
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Originally Posted by Duekster View Post
I got lied from you saying you used metal to saying you did not use metal.
Your supplier recommended something like what? You never said.

I think of metal in term of nobility and application. Is there metal in the pump? Brass then ok.... but then I need to condsider that too.
Read post 113. You get in a hurry to bash me and you skip some posts.

A valve box rated to handle the weight of the application.

You say commercial grates are acceptable??? Why? How are they non-corrosive?
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  #122  
Old 08-04-2012, 10:40 PM
muddywater muddywater is offline
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Originally Posted by tadpole View Post
The submersible pumps designed for Water Feature applications are either stainless steel or titanium (for salt water apps). Bearings may be of a different metal but they are not exposed to water, so it doesn't matter. And, yes, the reason behind this is corrosion. In any Water Feature, the goal is to have the clearest water possible, free from suspended matter and/or discoloration. Many submersible pumps today have an ABS housing. Water pH is the main determinate as to the rate and amount of corrosion.

I would also like to clarify another point. Pump vaults are not constructed to bear the weight of any Water Feature (fountain, bubbler, etc.). They are designed for the sole purpose of protecting the pump from large debris, (read gravel or rock), while allowing sufficient water to reach the intake of the pump from the surrounding reservoir. A pump vault's access for maintenance is through the top.
So you would never use a metal grate in a water feature with no "aqautic life."
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  #123  
Old 08-04-2012, 10:42 PM
Duekster Duekster is offline
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I used brass as an example but if you have dissimilar metals very far apart on the nobility scale then one will deposit on the other in the presents of an electrolyte. SS is corrosion resistant again many thongs but still susceptible to chloride pitting.

Debris in a pump is always killer.

We still do not know if Muddy did or did not used metal as he changed his position.
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  #124  
Old 08-04-2012, 10:48 PM
muddywater muddywater is offline
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Originally Posted by Duekster View Post
I used brass as an example but if you have dissimilar metals very far apart on the nobility scale then one will deposit on the other in the presents of an electrolyte. SS is corrosion resistant again many thongs but still susceptible to chloride pitting.

Debris in a pump is always killer.

We still do not know if Muddy did or did not used metal as he changed his position.
Read post 103 and maybe a few before that. Next time you might want to read through the thread before you accuse some one of lying.

You have not shown any data that would prove your point in this application. Considering people drink out of corroded metal piping to this day, i woild think the amount of corrosion in a nonpotable situation with no aquatic life would be minimal.
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  #125  
Old 08-04-2012, 10:55 PM
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tadpole tadpole is online now
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Quote:
Originally Posted by muddywater View Post
So you would never use a metal grate in a water feature with no "aqautic life."
You are correct. ABS only.
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  #126  
Old 08-04-2012, 11:10 PM
muddywater muddywater is offline
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http://www.gardenponds.com/product4479.html
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  #127  
Old 08-04-2012, 11:21 PM
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tadpole tadpole is online now
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Originally Posted by muddywater View Post
Yea, I had forgotten that Atlantic had come out with that 'Monsta'. Hefty price tag, too.
The grate is also available in heavy PVC, which would be my choice. Galvanized steel will corrode quite quickly if the water pH is not monitored.
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  #128  
Old 08-04-2012, 11:44 PM
turner_landscaping turner_landscaping is offline
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That product is a piece of crap at least for around here. Galvenized steel around here would be toast in 2 yrs. Our water ph is around 8 n higher straight out of a well. I have to replace bolts on skimmers constantly cause they have eroded to a nub and leaks occur. Never use metal it will only cause you problem down the road. Use abs grating it.
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  #129  
Old 08-05-2012, 12:07 AM
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tadpole tadpole is online now
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Originally Posted by turner_landscaping View Post
That product is a piece of crap at least for around here. Galvenized steel around here would be toast in 2 yrs. Our water ph is around 8 n higher straight out of a well. I have to replace bolts on skimmers constantly cause they have eroded to a nub and leaks occur. Never use metal it will only cause you problem down the road. Use abs grating it.
Have the same problem here with skimmer bolts, but because of acid pH.
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  #130  
Old 08-05-2012, 09:25 AM
Duekster Duekster is offline
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Originally Posted by muddywater View Post
Read post 103 and maybe a few before that. Next time you might want to read through the thread before you accuse some one of lying.

You have not shown any data that would prove your point in this application. Considering people drink out of corroded metal piping to this day, i would think the amount of corrosion in a nonpotable situation with no aquatic life would be minimal.
That is why I asked if metal was used and you said I insinuated metal and water were not compatible. It was much later you told me you did not use metal. Since you never have me specifics how can I address.

I do consider that people drink out of metal pipes. Hence the reason there is various types of corrosion contol in those systems depending on the water quality.
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