Loose Jumper Stop-Valves

[Readingplumber]

Hi,

Does anyone know why loose jumper stop valves were banned, surely their ability to act as a form of a non return valve makes them better than fixed jumper stop valves?

Look forward to your responses!

RP

 

[Robbo66]

Hello RP, I think it is to do with vibration and potential for water hammer.

Chris