Well I needed new seals for my 20 gallon tank and during the inspection, I saw one of the rollover checkvalves was cracked, so I decided to replace both of them. I went to the dealer to see if they had them. It turned out when you type in 1985 CJ7 they were discontinued, when I told the parts guy to write down the number and crosscheck it with a 1994 Wrangler YJ, they are the same part numbers. I didn't think about the liquid check valve, but I am sure they are close enough to the same.
Try this number at a dealership -
J319 8666 Check Valve
They are different types of valves and you can not run them like you suggested. You need the correct ones or just bypass the LCV.
85' CJ7 Laredo, 383 GM, Turbo 350, NP 203. SOA, 2" frame lift, 34" TSL swampers, Dana 30 open, AMC 20 w/ detroit locker, 4:10's, 1 Piece Mosers, 35" boggers to abuse when needed.