Can you use anything else instead of these as they always leak on the pressure side for some reason. I have swooped the angled ones for straight ones but still it leaks. Either that or I am doing something wrong. Thanks.
They don't leak if you tighten them a little more, but don't overtighten. They have a wingnut that has two lugs to help you tighten it by hand. I then put a spanner on it and give it an extra tighten. Never had to use ptfe tape.
These barbs have a tappered fitting which mates in with the pump. It may help if you put the barb in hot water the soften the plastic a bit, but be careful and don't overtighten and damage the thread.