My Nova's system sounds like the Naish. You don't need to remember to set clips on the connecting tubes like the SS. It's got one way valves on the struts, so when you're pumping the LE, they open up and let air in once LE gets to a certain pressure.
Each strut also has a one way
deflate valve, but if you want, you can turn it into a two way valve for quicker deflation using a built in plastic peg, so you don't have to sit there all afternoon squeezing nipples.
(It's for sale too - don't know if I've ever mentioned that)