>>28665125
you can come up with whatever nigger-rigged workaround you want, you're still ignoring you have 8 - 12 feet of hose you have to purge. and how much refrigerant is that hose (and manifold) going to contain which will never made it in to the compressor? how do you even know when the can is empty? this is the entire fucking reason why you use scales. now keep on larping that you have the slightest idea of how this works. manifolds shouldn't be used for charging systems, they're legacy equipment which became deprecated a long time ago, and the very fact you're trying to guess what the charge is based on what the pressure is proves you have no idea what you're doing.