The interior of {HEAD ~ housing} 2 on {TAIL ~ the spring 24 side} of diaphragm 7 is vented to the atmosphere by a bore 30 formed through pin 26 
on
The interior of { HEAD ~ housing } 2 on { TAIL ~ the spring 24 side } of diaphragm 7 is vented to the atmosphere by a bore 30 formed through pin 26
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH