Bailey Unicorrn II Vigo onboard water pump

happyhitch

Just taken delivery of a brand new Vigo and very pleased with it, however, on the first trip we noticed the onboard water pump made quite a racket, so presumed something was wrong.  Took it back to the dealer who checked all piping etc and then said it was
normal for it to make a noise like this.  I didnt accept this and asked them to change the pump, which they did but same noise again.  It seems we have to lump it but cannot understand why Bailey would fit such a noisy pump.  Has anyone had any success to
reduce the awful machine gun rattle of the pump?  Very much spoils an otherwise brilliant van.