Jockey Pump edit

Could you please explian why the jockey pump is a "must". (Also, edits should not be marked as "minor" unless a typo or very samll grammar correction.) Thanks. Fireproeng (talk) 11:53, 28 November 2007 (UTC)Reply

Jockey pump is a must only to safeguard the minor losses of pressure in the circuit. This accounts for the leakage losses at the flanges, etc. But once any hydrant is opened and the water is used, the Jockey pump can't provide the make up water as its capacity will be generally less somewhere around 5% of the main pumps. If the jockey pump is not present then the main pumps must act on these leakage losses also which is not desired by the suppliers, as per their conventions and standards, as far as I know. (Ashok Kumar Burra 08:02, 18 November 2009 (UTC))edit summary