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