For example, the skirt valve can be mounted about a stem or {HEAD ~ post} to create {TAIL ~ a 360 degree opening} that is less likely to be jammed by solid items 
to create
For example , the skirt valve can be mounted about a stem or { HEAD ~ post } to create { TAIL ~ a 360 degree opening } that is less likely to be jammed by solid items
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH