I give up on plastic hose connectors, Had a few call backs
because of leaking.I dont know if I got a faulty batch.
I Use brass ones, but they cost more,
Who”s the cheapest.
When we sell and fit a new Machine, We dont charge for extension hoses.
I guess you refer to the 3/4 BSP male-male joiners? Then you stick with the brass ones, avoid recalls and worse still flood damage claims against you. All plastic ones are all junk.