Pressure Washer Pump used to pressurize pressure vessel?

[JoshCull]

Hi, I am working on a project that requires me to pressurize water in a small pressure vessel up to a pressure of 1500 psi. I am searching for a pump to do this. Do you guys think a pressure washer pump such as this one:
http://www.canadiantire.ca/AST/browse/4/Auto/CarWashingCleaning/PressureWashersElectric/PRD~0398557P/Simoniz+2000+PSI+Electric+Pressure+Washer.jsp?locale=en

or this one:
http://www.princessauto.com/pal/product/8149650/Pumps-%26-Unloaders/3.5-GPM-@-2,000-PSI-Pump-Assembly

will be able to accomplish the task and hold pressure constant at 1500 psi for 5 or 10 minutes?

Thoughts anyone?

Thanks,
Josh

 

[Jobrag]

If you only need to ho;d pressure for a short time and don't have to repeat the operation too often have you thought about a gas (nitrogen) cylinder and a pressure regulator?

 

[JoshCull]

Hi thanks for your response. It has to be pressurized water in the tank (ideally with no air trapped inside)