{HEAD ~ The valve body} includes {TAIL ~ a cylindrical recess} through one face which extends partly through the valve body and a plurality of tapering slits originating from the bottom surface of the cylindrical recess, continuing through the valve body and tapering to a small point shaped opening through the the second valve body face 
includes
{ HEAD ~ The valve body } includes { TAIL ~ a cylindrical recess } through one face which extends partly through the valve body and a plurality of tapering slits originating from the bottom surface of the cylindrical recess , continuing through the valve body and tapering to a small point shaped opening through the the second valve body face
HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH