On 12/06/2016 09:28, Tim+ wrote:
David Lang wrote:
On 11/06/2016 14:18, Tim+ wrote:
Andy Burns wrote:
Paul wrote:

The hose pipe has the "safety" connection that closes when there's nothing
connected. I switch the machine on and all well, until I release the
trigger, when the hose connector pops off the machine.

My Nilfisk specifically recommended not using the "waterstop" type hose
connector onto the pressure washer ...




I imagine that's just because of potential flow restriction, I can't see it
affecting the connector "grip".

To the OP, I'd just try a different hosepipe fitting, preferably without
the waterstop feature.

The problem with the waterstop is a spring loaded N/R valve.

Sorry Dave, but as I've explained, this is exactly what a waterstop valve
*isn't*.

My waterstop valves are neither spring loaded or non-return.

In normal use water flow will try to close the valve but if the hose is
connected to a male connector the male part holds the valve open. It cannot
close in this circumstance, even if suction is applied. It will introduce
some flow restriction though compared to a non-waterstop valve which is I
think the main reason for not using one with a pressure washer.


Tim


I had trouble with a Hozelock branded fitting.
The swivelling of the spray head had worn the moving bit down and then
it didn't stay open when you plugged it in. Cheap plastic inside an
alloy shell that I won't recommend.