The pump housing also includes {HEAD ~ a first module member portion} adapted to seal with a second module member so as to form {TAIL ~ a control module} 
The pump housing also includes { HEAD ~ a first module member portion } adapted to seal with a second module member so as to form { TAIL ~ a control module }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL