Which one should you buy between these 2 valves - in terms of durability and simplicity?
There are different types of valve:
* Util valve (the widest valve mainly for 50kg cylinders).
* Standard valve (is the common one for 12.5 kg).
* Needle /pin valve (is not as wide as Util valve but they are both mainly used for 50kg and bigger cylinders).
* While camping valve are mainly use for cylinders with burner on top.
Buy T junction to make smooth connection for the two valves. This connection is both for 3kg and 12.5kg.
You'll need the two valves:
1. Pointed one for smaller cylinders ranging 6kg to 3 kg.
2. The round mouthed valve for bigger cylinders from 12.5kg upwards.
However, both are useful. But you may only need the first one with standard to camping mouth that's all, if you have an adapter. This works for refilling the 3kg and 6kg gas cylinders. It is the normal conventional 12.5kg valve, but with the help of an adapter, you can use it for refilling smaller gas cylinder bottles.
But normally, most people uses the two - one is for 12.5kg cylinder bottles, while the second one is for other smaller ones.
Both are good , one is for 6kg and the round one is for 12.5kg. I like it because it's stress free and also safe with your gas. You won't experience much shortages.