"A quick and simple way to connect a washing machine with separate hot and cold fills to a single cold supply. A bit clumsy since you still need the two hoses, but once fitted and tucked away then is OK. I marked down reliability since the first part was deformed and wouldn't tighten to give a leak free seal. Replacement part was fine."
"Having had two of these fail on me after discovering all the water, I have finally stumbled upon a metal compression fit option here in screwfix. Priced at £4 it is slightly more expensive but is solid and offers far better performance. My advice is avoid this plastic parts at all costs...it is not if it fails but when..."