[Sir Squeaky]

squeeky if you have no electronic controller for your pump then it will run at max speed all the time - then when you throttle the flow the pressure will increase and activate the pressure switch, when the valve is partially open the switch will switch on and off quite fast.

I promise you your switch has burnt out because of this.

That's never happened Alan.
My switch is fine, and it was fine on my last pump.

[Tosh]

Squeaks, get them ladders out, Mate; you never used to have any of these problems (as you used to regularly tell us) when you were doing it the 'trad way'.

[peter holley]

i split my hose (the hose to the hose reel) and divert the flow back to the tank (the hose that diverts back to the tank has a flow controll tap) this keeps the flow continuouse, so the pressure switch isnt working overtime....