{HEAD ~ The opposite side} of {TAIL ~ the carriage} is fixedly fitted with a compressible silicone rubber or other resilient valve member in sealing engagement with a port plate to carry out vacuum valving functions 
{ HEAD ~ The opposite side } of { TAIL ~ the carriage } is fixedly fitted with a compressible silicone rubber or other resilient valve member in sealing engagement with a port plate to carry out vacuum valving functions
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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