Quick Release Hose Connectors For Fluval

[arwelbath]

Hi,
I have a fluval 403, and I have two 'quick release' hose couplings like this... http/www.aquariumguys.com/doublevalve1.html
But, I say quick release advisedly! They have now become so stiff as to be unusable. I'd like to replace them with something similar (they are now discontinued). Anyone have any idea where I can get suitable quick release hose connectors to replace these?
Cheers,
arwel

 

[BigC]

[URL="http/tinyurl.com/24y5u9"]http/tinyurl.com/24y5u9[/URL]
http/tinyurl.com/yrcvgs

Regards
BigC