Direct mounting compact design requires minimum space for operation and installation with fewer potential leak points.Cost savings when manifolding the valves by eliminating several parts used in conventional methods of ‘piping up’.Free-swivelling ball end stem ensures perfect alignment, providing repetitive bubble-tight shutoff and long life.PTFE or graphite packing below stem threads prevents lubricant washout and thread corrosion.Back seat stem prevents blowout or accidental removal while in operation.Standard pipe bracket bolts directly to the manifold providing a rigid support for the transmitter. Instrument can be removed easily for service or repair.