What net discharge pressure corresponds to 100% discharge?

What net discharge pressure corresponds to 100% discharge?

• A. 150 psi
• B. 200 psi
• C. 250 psi
• D. 100 psi

Answer: (A)

Net discharge pressure is the pressure at the discharge when the pump is delivering its rated flow, after accounting for losses in the hose and fittings. For the MWS fire practice test, 100% discharge corresponds to a net discharge pressure of 150 psi. This value represents full capacity under the standard test setup, giving the expected pressure for complete discharge. Pressures like 200 psi or 250 psi would exceed the standard full-discharge condition, while 100 psi is too low to represent full discharge. So 150 psi is the reference pressure for 100% discharge.

Net discharge pressure is the pressure at the discharge when the pump is delivering its rated flow, after accounting for losses in the hose and fittings. For the MWS fire practice test, 100% discharge corresponds to a net discharge pressure of 150 psi. This value represents full capacity under the standard test setup, giving the expected pressure for complete discharge. Pressures like 200 psi or 250 psi would exceed the standard full-discharge condition, while 100 psi is too low to represent full discharge. So 150 psi is the reference pressure for 100% discharge.