Technical Gas cylinder not being emptied

[Nenagh52]

Gas heater stopped so I turned on the other cylinder and it stayed on.
Took out the "empty" cylinder this morning to find its not at all empty
It weighs 16 kg
a full one weighs 20.5 kg
and another "empty" one weighs 12 kg
which make me wonder what is meant by a 11 kg propane cylinder.
Thanks as always for any insights

Its a Truma twin cylinder regulator and a Truma heater

 

[jackwhoo]

11KG Propane Gas Cylinder | Propane for Mobile Catering and Caravans | Flogas

For butane and propane requirements, Flogas Shop has a range of gas cylinders. Why not check out our 11kg Propane Gas Cylinder (Screw Fit).

www.flogas.co.uk

It is meant to contain 11kg of gas when full

 

[jackwhoo]

That Flo gas 11kg cylinder empty weight approx 13.2 kg
So when full it weighs approx 24.2kg

 

[rayc]

Gas heater stopped so I turned on the other cylinder and it stayed on.
Took out the "empty" cylinder this morning to find its not at all empty
It weighs 16 kg
a full one weighs 20.5 kg
and another "empty" one weighs 12 kg
which make me wonder what is meant by a 11 kg propane cylinder.
Thanks as always for any insights

If it is 12kg empty then full with 11kg of gas it will be 23kg

 

[Communicator]

Gas heater stopped so I turned on the other cylinder and it stayed on.
Took out the "empty" cylinder this morning to find its not at all empty
It weighs 16 kg
a full one weighs 20.5 kg
and another "empty" one weighs 12 kg
which make me wonder what is meant by a 11 kg propane cylinder.
Thanks as always for any insights

Its a Truma twin cylinder regulator and a Truma heater

A bit of a physical task, but with the cylinder out, have you tried shaking it, to feel/hear whether ther is any liquid sloshing around inside?
I have a very old memory of a butane cylinder that would not supply the gas cooker in my parents country cottage. We drained the cylinder outdoors into a bucket from which the small amount of liquid slowly evaporated. Our conclusion was the the liquid was probably pentane that had accumulated in the cylinder. Pentane can have a boiling point approximating to summer outdoor temperatures. The exact figure depends on the particular isomer.

 

[The Panda Nut]

Gas heater stopped so I turned on the other cylinder and it stayed on.
Took out the "empty" cylinder this morning to find its not at all empty
It weighs 16 kg
a full one weighs 20.5 kg
and another "empty" one weighs 12 kg
which make me wonder what is meant by a 11 kg propane cylinder.
Thanks as always for any insights

Its a Truma twin cylinder regulator and a Truma heater

Ive had 'faulty gas'.. Sometimes the stuff (nitrohgen??) used to flush cylinders is not cleared before refilling. Calor held hands up apologised and gave me a new full one without any argument.

 

[Nenagh52]

Thanks guys, we cook by gas in the house with the same cylinder type so I will connect up the "empties" and see will they cook the Xmas turkey!! and report back
Yes, there is liquid sloshing around in both "empties"

 

[Communicator]

Ive had 'faulty gas'.. Sometimes the stuff (nitrohgen??) used to flush cylinders is not cleared before refilling. Calor held hands up apologised and gave me a new full one without any argument.

I seriously doubt that liquid nitrogen could exist in an typical propane cylinder.

 

[rayc]

It would be interesting to know if the regulator can supply its maximum rated flow output when the cylinder is down to last third. There Is considerable demand at start up of the heater