#5 give a good answer. 9 o& H1 e$ n7 W- J* U) C- |3 L/ H; ? H3 b/ H
cause different pressure areas , we can just apply a small pressure to enable the poppet out ) u4 J8 }: r* U+ R* v& | 5 A( R3 y( T2 L( x2 V5 \0 zit should be a two stage valve. a little bit complex kind. once you get its working function. then it is easy for. u