[Carl@Cwc]

any peeps know where to ge a double check valve / non return valve from that will cater for hose pipe.
the air locks are driving me insane lol.

do i need to JG ADAPT IT?

[R.C Property]

for hosepipe you cant, you would need to upgrade the hose to 15mm house grade pipe to get them fitted.

that's what i used when i built my system, fitted non return valves to both my pumps and not had a airlock in the system. even when i empty my tank fully, drive about then refill it,

[Darren Spreadbury]

I've got one on my tank, go to eBay and type in caravan 1/2 non return valve it will fit straight in garden hose pipe.

[nokmond]

I've got one on my tank, go to eBay and type in caravan 1/2 non return valve it will fit straight in garden hose pipe.

Would you mind linking to the eBay item as there are loads of different ones? Where have you fitted yours?

[Alex Gardiner]

You could use one of these:

http://www.gardinerpolesystems.co.uk/acatalog/john-guest-3-8-inch-single-check-valve.html

With one of these at each end:

http://www.gardinerpolesystems.co.uk/acatalog/3-8-inch-john-guest-stem-to-1-2-inch-barb.html

[Carl@Cwc]

You could use one of these:

http://www.gardinerpolesystems.co.uk/acatalog/john-guest-3-8-inch-single-check-valve.html

With one of these at each end:

http://www.gardinerpolesystems.co.uk/acatalog/3-8-inch-john-guest-stem-to-1-2-inch-barb.html

says no stock on bottom one

[andyM]

http://www.ebay.co.uk/itm/Caravan-Motorhome-Whale-1-2-Plastic-Non-Return-Valve-/261202962690?pt=UK_Campervan_Caravan_Accessories&hash=item3cd0e8e902

[Alex Gardiner]

You could use one of these:

http://www.gardinerpolesystems.co.uk/acatalog/john-guest-3-8-inch-single-check-valve.html

With one of these at each end:

http://www.gardinerpolesystems.co.uk/acatalog/3-8-inch-john-guest-stem-to-1-2-inch-barb.html

says no stock on bottom one

Forgot that!

Here is another link to them:

http://www.vendingspareparts.co.uk/product.asp?urn=8130&c_urn=167

[Carl@Cwc]

http://www.ebay.co.uk/itm/Caravan-Motorhome-Whale-1-2-Plastic-Non-Return-Valve-/261202962690?pt=UK_Campervan_Caravan_Accessories&hash=item3cd0e8e902

will this do same job as the 3 bits alex noted???

[Perfect Windows]

Where do you fit the valve?

Vin

[Darren Spreadbury]

http://www.ebay.co.uk/itm/Caravan-Motorhome-Whale-1-2-Plastic-Non-Return-Valve-/261202962690?pt=UK_Campervan_Caravan_Accessories&hash=item3cd0e8e902

that's the one I got. I put it by the outlet from the tank. Since fitted never had air in system.

[andyM]

I bought one about 6 months ago with the intention of fitting it.
But I had forgot about it and it's still in the cupboard...........

[andyM]

Where do you fit the valve?

Vin

As close to the tank outlet as you can.

[Perfect Windows]

So that's between the tank and the pump?

Vin

[andyM]

So that's between the tank and the pump?

Vin

Yes, it will prevent water from returning back to the tank when driving etc.
So the valve should be fitted close to the tank outlet and before the pump.
That's how it's supposed to work in theory, but I've yet to fit mine.