Sprayer PTO roller pump question

[Flyindutchman]

Thanks a bunch for all the friendly advice. I'll probably just stick with the cast iron pump for now versus spending close to another $300 for roundup approved one.

 

[sandman2234]

I was just wondering (and I know NOTHING about spraying chemicals)...does stainless steel pumps make a difference with these sprayers or do they get eat up just as badly?
David from jax

 

[Oldoak]

The stainless steel pumps definitely make a huge difference. Over the years I have found the weak link on all the roller pumps are the bearing seals. Eventually they will allow spay material to corrode the ball bearings. However, the bearings are replicable and can be purchased as a pump replacement part or at any bearing store or even an auto parts retail store.

 

[David_Kb7uns]

Still have the original Hypro pump 10 years later, also have a old used Delevan that I put new rollers in and still works well.

Have camlock fittings on each pump with matching plugs and just fill up with bar oil for storage after rinsing out and have very little rust. Think the corrosion thing is not a real concern for occasional use.

David

 

[teg]

...Think the corrosion thing is not a real concern for occasional use...

It's a concern IF you do not clean it. If you only use a sprayer once and leave Roundup in it, expecting next year for it to work just fine, forget about it.

(I love hearing about all the different oils being used )

 

[Flyindutchman]

Stainless steel pumps are described as "roundup ready" but they are 2-3 times more expensive. Any herbicide that contains glyphosate is corrosive to the cast iron pumps. Cleaning & lubricating after each use is the major factor is the major factor that effects the longevity of any roller pump, especially the cast iron models.

 

[David_Kb7uns]

The flushing with water is a given after each use, I either leave them wet with flushed water or drain and fill with oil, either way no corrosion, it is when you let air in that most of the corrosion occurs.

David