needle valves work great, try adjusting the packing nut on the valve if its got one. you might find that valves leak at lower operating temps too because of material shrinkage. Most all valve problems can be remedied by that adjustment.
also most valves have a lubricant inside them, source ones with no lube so you dont smoke that junk.
yeah just take off the outside nut and the handle slides out, then you can tighten the nut beneath. I had to do this to all my valves on my new CLS. They only needed tightened like 1/8th of a turn. Too much and they will be really hard to operate or may not move completely.
try wiggling it a bit, mine were like that, once you get them started they come off easier. If it doesn’t with a wiggle, just stick a flat head screw driver in there - that’s what I always do… Just be careful obviously not to damage anything with it
really both work for liquid or gas, the advantage of the ball valve is more unrestricted flow, while a needle valve is good for metering and controlling flow.
ball valve= less restricted flow used for large transfers, or on/off service. quick to open /close
needle valve= more restricted orfaces, used to meter and control flow in a process, can be used in a wide range of applications.
slow to turn fully off/on due to wide range of fine adjustment.
if you are going to upgrade valves and want to go bigger, why not do the hoses too?
I’m with you man, if my recovery went faster I’d probably go from ready to pour to I have to scrape in a couple of seconds… That actually happened last run, went to open it and by the time I got the platter off, it was too far evaped lol
you got a willing friend? see if they are willing to be promoted to minion for some of the hash they made. double points if they grew it and you dragged them through extracting it in your gear for a 50% split