kitchen mono block mixer tap

[Ché]

I've just replaced a mono block kitchen mixer tap for a customer that said his old Tap intermittently released a bust of water through spout, I advised him to buy a new replacement tap as I believed the cartridge maybe on the way out.
I then installed a identical looking tap that he'd had bought and delivered from Victoria plum and a day later he calls to say that the newly installed Mixer tap is doing the same thing?...
Would I be right in thinking that this is being coursed by a mains pressure spike and a 15mm pressure reducing valve fitted to pipe under sink would solve or is it the quality of tap thats is the issue?

 

[itcanbesoeasy]

most sink mixer taps will intermittently pass about an egg cup full of water sometime after they have been used but not a burst as such,it must be gravity/syphoning etc it just happens,maybe another member can enlighten me,I never touch them after making the same mistake as you years ago,can't see that fitting a pressure reducing valve will do anything except cost you more money and an unhappy customer.

 

[PlumbBobBob]

the main problem is getting the tap from Victoria plumb

 

[Howsie]

the main problem is getting the tap from Victoria plumb

Without a doubt! <spit>