I picked up a small pressure washer at a car boot cheap, but lacking
its hose etc.. We have a large one on wheels and I thought this would
do for the smaller jobs. A spare hose etc. we already had for a Karcher
fitted fine, but the surge on triggering the gun is blowing the
connection off. It is stripping the internal thread off of the plastic
nut, where the high pressure hose connects to the unit.

The motor continues to run when the trigger is released, so I'm
wondering if it ought to have a pressure relief valve or a pressure
switch to turn the motor off?

Other than that, it seems quite a powerful unit. It says Supawash SPW3
on a sticky label, but a Google finds nothing.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

"Harry Bloomfield" wrote in message
. uk...
I picked up a small pressure washer at a car boot cheap, but lacking
its hose etc.. We have a large one on wheels and I thought this
would
do for the smaller jobs. A spare hose etc. we already had for a
Karcher
fitted fine, but the surge on triggering the gun is blowing the
connection off. It is stripping the internal thread off of the
plastic
nut, where the high pressure hose connects to the unit.

The motor continues to run when the trigger is released, so I'm
wondering if it ought to have a pressure relief valve or a pressure
switch to turn the motor off?

Other than that, it seems quite a powerful unit. It says Supawash
SPW3
on a sticky label, but a Google finds nothing.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk



There should be an unloader valve 'across' the pump (ie from output
to input). This is often built into the pump casing on smaller pumps.

AWEM

Andrew Mawson wrote on 06/07/2011 :
"Harry Bloomfield" wrote in message
. uk...
I picked up a small pressure washer at a car boot cheap, but lacking
its hose etc.. We have a large one on wheels and I thought this would
do for the smaller jobs. A spare hose etc. we already had for a Karcher
fitted fine, but the surge on triggering the gun is blowing the
connection off. It is stripping the internal thread off of the plastic
nut, where the high pressure hose connects to the unit.

The motor continues to run when the trigger is released, so I'm
wondering if it ought to have a pressure relief valve or a pressure
switch to turn the motor off?

Other than that, it seems quite a powerful unit. It says Supawash SPW3
on a sticky label, but a Google finds nothing.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk



There should be an unloader valve 'across' the pump (ie from output
to input). This is often built into the pump casing on smaller pumps.

AWEM

Thanks Andrew, I'll take a good look at it later this evening.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk