High pressure cut-off switch for small fountain pump?

[rberney1@comcast.net]

Trying to build a portable waterer with 5 gallon pail and small submersible fountain pump and hand held water wand to water indoor plants. Is there a high pressure cut-off switch I could hook up to this kind of pump?
Thanks for any suggestions.

 

[Fitter30]

What are you trying to accomplish with the switch?