If a jockey pump start point is set at 165 psi (11.4 bar), the jockey pump stop point should be not less than

If a jockey pump start point is set at 165 psi (11.4 bar), the jockey pump stop point should be not less than
A . 130 psi (8.96 bar).
B . 153 psi (10.55 bar).
C . 175 psi (12.06 bar).
D . 188 psi (12.96 bar).

View Answer

Answer: C

Explanation:

The jockey pump stop point is typically set slightly above the fire pump start point to prevent unnecessary cycling of the fire pump. If the jockey pump start point is at 165 psi, the stop point should be higher to maintain system pressure and prevent overlap with the fire pump activation threshold, making 175 psi a suitable stop point.

Reference: NFPA 20 and CWBSP materials, which cover the installation and testing of fire pumps, including jockey pumps, recommend setting the jockey pump’s stop pressure above its start pressure to ensure seamless system pressure maintenance.