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LPG Tank Size and Engineering ?

Posted: Mon Jul 13, 2009 6:57 pm
by Swerve
Was talking with my local mechanic today abdout getting my G60 Ute re-registered after buying it interstate.

He reckons if the LPG tank is over 100L it will need engineering ? this ounds like crap after some research ? can anyone enlighten me ?

Thanks

Steve

PS- Cant find the exact tank size on my tank. Size is 55cm x 85cm

Posted: Mon Jul 13, 2009 7:05 pm
by -Nemesis-
First i've heard of it.

Posted: Mon Jul 13, 2009 7:35 pm
by mhgill
Depends on your state, 100L tank = legal in SA.

if it smells like bullshit it probably is. :)

Re: LPG Tank Size and Engineering ?

Posted: Wed Jul 15, 2009 7:25 pm
by Athol
Swerve wrote:He reckons if the LPG tank is over 100L it will need engineering ? this ounds like crap after some research ? can anyone enlighten me ?

PS- Cant find the exact tank size on my tank. Size is 55cm x 85cm
He needs to get his eyes checked, and read the standard again.

There are 3 rows in the table. For <100L, there are bolt and plate sizes specified. For between 100L and 150L, there are larger bolt and plate sizes specified. Over 150L requires engineering, and I've done a few of them.

To find tank capacity, locate the Water capacity (WC) stamped on the tank, in kg or lbs depending on age. If lbs, divide by 2.2 for kg. Usable capacity in litres is 80% of water capacity in kg.

Posted: Wed Jul 15, 2009 7:46 pm
by GUtripper
I've always wondered what the wc bit means, thanks.

How hard is it to plumb in a second tank? Ie, i have one under the back of the wagon, want a second inside to give range. Anything special required other than duel outlet/line filler hose and some sort of T into the line to the front of the car?

Posted: Wed Jul 15, 2009 11:41 pm
by Athol
GUtripper wrote:How hard is it to plumb in a second tank? Ie, i have one under the back of the wagon, want a second inside to give range. Anything special required other than duel outlet/line filler hose and some sort of T into the line to the front of the car?
Multiple tanks require a twin check and hydrostatic relief valve (AKA sherwood valve) to prevent backflow from the service line or siphoning between tanks from overfilling one tank.

A relatively recent change to the standard also requires that multiple tanks either have to be wired to operate together at all times (tank solenoids hard wired together) or the tanks have to be filled from separate fillers, so that you can't fill both tanks, run on one, then overfill the full tank while refilling the other one...

Re: LPG Tank Size and Engineering ?

Posted: Thu Jul 16, 2009 7:39 am
by Swerve
Athol wrote:
Swerve wrote:He reckons if the LPG tank is over 100L it will need engineering ? this ounds like crap after some research ? can anyone enlighten me ?

PS- Cant find the exact tank size on my tank. Size is 55cm x 85cm
He needs to get his eyes checked, and read the standard again.

There are 3 rows in the table. For <100L, there are bolt and plate sizes specified. For between 100L and 150L, there are larger bolt and plate sizes specified. Over 150L requires engineering, and I've done a few of them.

To find tank capacity, locate the Water capacity (WC) stamped on the tank, in kg or lbs depending on age. If lbs, divide by 2.2 for kg. Usable capacity in litres is 80% of water capacity in kg.
Athol,

Many thanks and your been the best help yet. The tank has a stamp of (WC 147)

So as I'm under 150L I'm sweet !!!! THanks so much !!!