12v Water valve Solinoid

Look for solonoids from Sprayer companies - www.mrnozzle.com.au or someone like it
Be aware these use a suprising amount of power when open
JR

Hey,

I am pretty sure that irrigation solenoids are 24v and there is a transformer that takes it down from the mains voltage but there might be some 12v models around or you could just get something that will change it to 24v from your 12v. I stumbled across these guys Solinoid

else try a 240V with a cheap inverter

be careful when choosing your solenoid type as the majority of the irrigation solenoids will not open correctly unless they are under mains pressure...even though they are receiving the current to open ....the pressure on the coming in side is required to overcome the magnetism

in other words if you use the standard irrigation solenoid (24v ac) and are able to change the coil to 12v dc then it may still not work as I gather you want to connect the two tanks to allow for gravitional flow between them..wont work

if you get the little black poly solenoid valve like you see for the trickle irrigation systemes..the ones with the barbed end for pushing into a 19mm hose these will open under mimimal pressure but they are still 24v ac

why dont you just offset a small 12v pump easily accesible and transfer between tanks?...simpler

i dragged a 12v solenoid out from under the bench just days ago,will check to see what brand it is and repost.

I have been using the 24 volt solenoid's on our spray equipment for years running from 12 volt tractors without any problems
Pressure ranges from 15 psi to 100 psi. we put chemicals through them and they seem to last a couple of years. About $25 each from a rural supply outlet that sells spray equipment. Silvan outlets. Here is what i use.

http://www.silvanagcess.com.au/cgi-bin/silvan/search_name_call.cgi?no=1067&prod_div=3

Boobook2
Hardi is another brand of ag spray unit they also use 12 volt solenoid valves that draw little current as they are continiously rated. A ag supplier that sells farm machinery should have then

Murray

www.burkert.com.au
They make a range of DC solenoids for water and other uses and the main thing you have to be sure of is the seat is capable of supporting the fluid you use.
They are not cheap but with a gravity feed a broken line and a loss of your main fuel soon outweighs the cost of the valve.
Ian