Cheap Chinese pump

My son as been using this cheap Chinese pump for the last three year or more. Last week started to get louder then the flow started to slow down. Changed out today with another cheapo.

think it was £8 so defo had his money worth.

Been using a similar one on my PF Trolley.

I also acquired a 16L sprayer (similar to a small backpack but not designed to be worn on the back) from eBay a few years back for a couple of jobs where I had difficulty even with the trolley, but the pump in it didn't produce the flow I like, so I popped one of these pumps in there as well. Works a treat.

That pump as been-pumping two 25l at a time  ?similar to a pure 50l trolley with no problems up to last week. 

I used to keep a spare in the motor as a backup because I thought they wouldn't last long being that they are so cheap compared to a Sureflo or similar. I don't bother now.