{HEAD ~ The longitudinal movement} of piston 96 causes longitudinal movement of {TAIL ~ valve pin} 31 which is threadably mounted to piston 96 at 100 
{ HEAD ~ The longitudinal movement } of piston 96 causes longitudinal movement of { TAIL ~ valve pin } 31 which is threadably mounted to piston 96 at 100
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH