{HEAD ~ The spring} 13 is supported at {TAIL ~ the bottom end} of the cup shaped design and urges a closing part 16 away from the valve seat 15 against a bearing region 17 arranged on latching means 18, 19 
is supported at
{ HEAD ~ The spring } 13 is supported at { TAIL ~ the bottom end } of the cup shaped design and urges a closing part 16 away from the valve seat 15 against a bearing region 17 arranged on latching means 18 , 19
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH