Original: Their application can be from  to over  and from low pressure to very high pressure (>1200 psi or 8.3 MPa).
Simplified: Discharge pressures can range from low pressure to very high pressure (>5000 psi or 35 MPa). Their application can be from 3 hp (2.24 kW) to over 500 hp (375 kW) and from low pressure to very high pressure (>1200 psi or 8.3 MPa).