February 24, 2012, 9:59 pm
I used original Vauxhall non-return valves from Vectra B:
They are cheaper on ebay, good quality, can recommend. There are also some cheaper fiat valves or universal ones, but they are not that good and some of them restrict too much the flow of fluid.
Pop up the bonnet, remove the mat.
Take washer tube off the jet and connect the valve. Remember about the direction of flow, it is marked on the valve. Use piece of tube to connect valve with jet. Two valves give best result - one in front of each jet.
Photos by Czari. Used fiat panda non-return valves.
You do exactly the same in case of heated jets.
If we are talking about it it is worth to say about third non-return valve - at the back of the car for rear window jet. If you fit it washer fluid starts flowing immediately, not like without the valve - after few seconds, when rear wiper is making second run.
To fit it open the tailgate, at the top you will see rubber seal with washer tube running through it, remove it, cut the tube somewhere between rear jet and the seal and connect the valve. Put the valve inside the tailgate, fit the seal - job done.
I can make some photos tomorrow, it's too late and too dark today