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Fuel tank adaptor ?


Adam1991

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Hi I’ve bought this m2221 fuel tank valve from mellor online which is for connecting to a stand pipe. 
 

I have an unused fuel tank available to connect to. Is there an adaptor or part that would allow me to directly connect to this fuel tank thread with the valve I’ve got here? See both images below. 
 

Sorry to repost more question about the same fuel tank connection 😂

 

Just struggling to work out how to run the heater pipe and connect it up as this valve is around half the size of the receiving thread on the tank.  (The red valves already there a beefier than the one I’ve ordered) 

 

thanks for any advice ! 

IMG_1349.jpeg

IMG_1369.jpeg

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You buy an adaptor or adaptors from a plumber's supplier, probably in black iron, but could be brass.

 

You will however need to know the thread size and type that is in the boss on the tank. It looks to me as if you may have bought an over

sized tap for that thread.

 

I am by no means certain, but I think the boss will be 1/4 BSP parallel. You could take the plug out as long as the fuel level is below it, and take it to a plumber's merchant to get a tap that screws into the boss you took it out of. They should have ones with fuel resistant seals for oil fired central heating systems. That way, you won't end up with an array of adaptors so you keep the tap close to the tank for a degree of protection..

Edited by Tony Brooks
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Hi Tony, can I ask you another question regarding install of this Chinese diesel heater.. I’m trying to work out if it’s ok to simply have the main air inlet just pull air from the (well ventilated) engine bay (cruiser narrowboat stern) rather than running ducting to the outside? Is this ok or a bad idea? New to installing heating systems 😂

 

thanks 

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7 hours ago, Adam1991 said:

Hi I’ve bought this m2221 fuel tank valve from mellor online which is for connecting to a stand pipe. 
 

I have an unused fuel tank available to connect to. Is there an adaptor or part that would allow me to directly connect to this fuel tank thread with the valve I’ve got here? See both images below. 
 

Sorry to repost more question about the same fuel tank connection 😂

 

Just struggling to work out how to run the heater pipe and connect it up as this valve is around half the size of the receiving thread on the tank.  (The red valves already there a beefier than the one I’ve ordered) 

 

thanks for any advice ! 

IMG_1349.jpeg

IMG_1369.jpeg

Your tap looks to have a compression fitting for copper pipe on the left hand end and a female thread with a brass hose adapter screwed in on the right hand end.  Doesn't look like the best valve for the purpose, but it can probably be made to fit. There should be an arrow marked on the body showing the direction of fuel flow. Can't see it in the picture, but it may be on the other side. If you tell us which way the arrow is pointing we can advise how best to connect it up.

 

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22 minutes ago, Adam1991 said:

Hi Tony, can I ask you another question regarding install of this Chinese diesel heater.. I’m trying to work out if it’s ok to simply have the main air inlet just pull air from the (well ventilated) engine bay (cruiser narrowboat stern) rather than running ducting to the outside? Is this ok or a bad idea? New to installing heating systems 😂

 

thanks 

 

I think that this is probably a wet boiler, not a hot air system and if so, providing the engine room is adequately ventilated, so the running engine can't create a depression, I think it will be fine. On our warm air Webastos we always drew the combustion air from the engine room and the air to be warmed from the cabin.

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Thanks Tony, it’s a hot air heater. Hopefully it will be ok pulling air to be warmed from the engine bay otherwise I’ll pull the air from inside as you mentioned. Cheers. 

27 minutes ago, David Mack said:

Your tap looks to have a compression fitting for copper pipe on the left hand end and a female thread with a brass hose adapter screwed in on the right hand end.  Doesn't look like the best valve for the purpose, but it can probably be made to fit. There should be an arrow marked on the body showing the direction of fuel flow. Can't see it in the picture, but it may be on the other side. If you tell us which way the arrow is pointing we can advise how best to connect it up.

 

Hi David, thanks for your response. The barbed end is the direction of flow. The thread on the opposite end is slightly smaller than the thread available on the fuel tank so some sort of adaptor would be great. 

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12 minutes ago, Adam1991 said:

Thanks Tony, it’s a hot air heater. Hopefully it will be ok pulling air to be warmed from the engine bay otherwise I’ll pull the air from inside as you mentioned. Cheers. 

 

I would never pull the blown air from the engine room. An oil leak, diesel leak or exhaust leak is likely to make the cabin smell, and diesel fume soaked wood or sort furnishing is difficult to cleans. Pulling from the cabin should also warm the cabin up a bit faster, so you save a little fuel.

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There’s a couple of Chinese diesel heater groups on Facebook. Well there are lots, but two big ones, one UK and one US. Worth asking on there. Loads of experts with lots of experience with these on boats, vans, and workshops. I’ve recently set mine up and for the money they are brilliant bits of kit. 
 


 

As for the intake definitely don’t run it inside the engine bay.  At best you’re going to get the smell of an oily engine all around your boat.  Won’t kill you but will be very unpleasant particularly if you ever plan to run the engine and heater together.  It will also be taking in any leaking engine exhaust fumes if you have an engine issue. 

 

Exhaust obviously need isolation well away from intake. 
 

And make sure exhaust assembly is correctly assembled with paste and decent clips. As supplied and as you’d expect for the price they need a bit of fettling. The upgraded exhaust at about £15 delivered is money very well spent. 

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