Leaking return line to tiger loop

DarrylMiller

Hi guys,

I have been having a hell of a time getting a solid seal on a flared compression fitting from the return line going to the Tiger Loop. I have tried bending copper and getting flare perfectly lined up with the inside hole before tightening the compression nut but still a very slow leak.

It looks like at one time there was some kind of sealant used at the base of the compression fitting but I always thought you were not supposed to put anything on these type of fittings. Plus it seems to be leaking from where the copper passes through the compression nut and not at the threads. I can order a new line but I am not sure if this will solve the problem. Any suggestions?

HVACNUT

If you're sure it's not the threads in the pump.
Bypass plug is in?

Big Ed_4

The dab of pipe sealant found on the fitting tells me that the last mechanic had the same issue .I would buy a set of new lines ..

leonz

That looks exactly like a BSP flange connection with the machined recess depression that uses an adjustable fitting with either a BSP compression copper washer or neoprene black rubber o-ring with the blue dot behind the flat steel washer.

If you look closely at the third photo image you can see the flat washer that compresses against the coper washer behind it.

What you are missing there is the identical male female adaptor fitting that would allow you to use a copper fuel line rather than a BSP hose fitting and o-ring.

HVACNUT

leonz said:

That looks exactly like a BSP flange connection with the machined recess depression that uses an adjustable fitting with either a BSP compression copper washer or neoprene black rubber o-ring with the blue dot behind the flat steel washer. If you look closely at the third photo image you can see the flat washer that compresses against the coper washer behind it. What you are missing there is the identical male female adaptor fitting that would allow you to use a copper fuel line rather than a BSP hose fitting and o-ring.

Those are manufacturer provided oil lines for the BF Riello to keep things tight inside the burner compartment. There's no retrofit for that.

leonz

What is needed is an adapter identical to the other one mounted on the oil pump to solve the leakage problem.

DarrylMiller

The bypass plug is in. I will have to check tonight to 100% verify it is not coming from the threads. 

DarrylMiller

I just checked again and yes, it is 100% from the middle hole of the compression nut where the tube goes through.

Big Ed_4

It seems like bf adapter is different then f adapter ..

DarrylMiller

Ok, thanks. Looks like I am going to have to try my luck with a new line.

leonz

Make sure the replacement copper tubing has the identical pipe BSP female
male pipe adapter otherwise it will still leak.