P1 V70 rear washer help please.

[foammanmark]

When I first bought my R the hose near the bottle was disconnected, and under the boot floor. Sorted those and then when I bought her back in April, the hose was disconnected behind the speaker in the rear most pillar. Now I have an issue again which is bugging me. I have got a replacement nozzle but I'm wondering if the issue is that valve as it still isn't working, and back pressure is causing the hoses to come apart where there are joins.

I replaced the valve with a used one but screenwash is blasting out of the valve into the surrounding area, but could I have the valve the wrong way round? I have ordered a new one off the bay but need to make sure that I have it the right way round.

Advice appreciated...........