Check out this shiz:
http://www.usplastic.com/catalog/pro...Thread+Coupler
and
http://www.usplastic.com/catalog/pro...Thread+Adaptor
Between the two, you can get a set for $8 a pop for 1/2" line, and they auto seal when pulled apart. This could really be helpful for anyone who is constantly f*cking with their system. Imagine having these things on the block itself ... it would make installation easier since you wouldn't have the hoses in the way. For the initial two machines it would only set me back $35 and it'd be worth the reduction in stress, methinks.
My question, though, is how sturdy that polypropylene is when using it with the chems we use? Is this similar to PVC or those nylon fittings?