#5 give a good answer. $ q( L5 |; G. h3 X8 N 6 ?- r# y" I' B7 j& {, q$ Hcause different pressure areas , we can just apply a small pressure to enable the poppet out n) J* E; _2 u8 ]
/ b- x8 C1 y6 _, p: \$ Oit should be a two stage valve. a little bit complex kind. once you get its working function. then it is easy for. u