FridgeFreezer Posted April 13, 2008 Share Posted April 13, 2008 I need to do some welding to the rear body X-member on a certain green RRC. I really want to remove the rear wing to get access but as well as the fuel filler, there's also an LPG filler in the wing which is plumbed in with rigid copper pipe . In such a way that you can't remove it from the panel without disconnecting the pipe which I'm guessing would let all the little LPG's out all over the shop So, is there usually any way of shutting off the feed to the filler pipe, or a safe way of de-pressurising an LPG install? Quote Link to comment Share on other sites More sharing options...
rtbarton Posted April 13, 2008 Share Posted April 13, 2008 There should be a non-return valve on the tank where the pipe enters, so in theorey you would only lose the gas in the pipe, pressing the valve in at the filler should release this. Quote Link to comment Share on other sites More sharing options...
steve b Posted April 13, 2008 Share Posted April 13, 2008 Hi Fridge, The filler tube is isolated from the tank by a one way valve , so all you will get is the LPG in the filler line, it might be wise to take the tank out tho just for added safety, the feed line is shut off by the tank solenoid so again there will be a hiss from the LPG in the feed line but the tank will be shut. Hopefully some else will confirm this, but thats what i know....we already have one Rocketeer on here so probably don't need any others Cheers Steveb Quote Link to comment Share on other sites More sharing options...
Guest WALFY Posted April 13, 2008 Share Posted April 13, 2008 As stated above. You should only lose the gas in the fill pipe. There should be a solonoid on the tank that only opens when 12v is applied Quote Link to comment Share on other sites More sharing options...
Roverdrive Posted April 13, 2008 Share Posted April 13, 2008 My tanks have a single hole which incorporate the tank fill, gas out, and level indicator. Incorporated in this are two shut off valves with knurled nuts to operate. Might be worth a look to see if you have the same. Quote Link to comment Share on other sites More sharing options...
Highway_Star Posted April 13, 2008 Share Posted April 13, 2008 What they ^ said. I did mine last year, wing off. Left the filler attached to the wing, disconnected the pipe. A tiny puff of gas was all I got, I left the garage door open all day whilst I was stripping out. The welding is done, I'm still here, so's the car. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted April 13, 2008 Author Share Posted April 13, 2008 Cheers guys, I'll crack the connector off and see what happens Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted April 13, 2008 Share Posted April 13, 2008 Keep your hands and face clear! Also, disconenct the battery before anything, but I expect you have done that already, or there isn't a battery in it Quote Link to comment Share on other sites More sharing options...
rtbarton Posted April 14, 2008 Share Posted April 14, 2008 Cheers guys, I'll crack the connector off and see what happens You can release the pressure slowly by carefully pressing in the valve in the filler with a screwdriver. As Bowie says, keep clear or you'll get freeze burns. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted April 14, 2008 Share Posted April 14, 2008 If you do push the valve in, make sure you dont damage the seal, otherwise everytime you fill up you get a hose full of LPG squirted at you Quote Link to comment Share on other sites More sharing options...
geoffbeaumont Posted April 14, 2008 Share Posted April 14, 2008 As above I've had an LPG freeze burn from a dodgy pump before, and it's surprising painful Just to make you suitably fearful, those LPG cylinders hold more propane than triggered the Piper Alpha disaster (or so I'm told by my Dad, who's an oil industry engineer). It's probably still safer than welding near a petrol tank Quote Link to comment Share on other sites More sharing options...
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