Hex’s HM53 is a three-valve instrument manifold used to perform the block, equalising and vent requirements of a differential pressure transmitter applications. It is available in a variety of exotic alloys including Hastelloy, Monel, Alloy 20, Titanium and Zirconium, as well as stainless and carbon steel. Of importance in this new design is the inclusion of a single mounting flange that allows the transmitter to bolt directly to the manifold which eliminates the piping of excess tubing and nipples. A mounting kit may also be specified to allow for installation to a pipe stand. The Hex Valve HM53 features a non-rotating tip (NRT) stem which provides tight, repeatable shut-off without the galling or cross-scoring that occurs on ball-type stems. The NRT conical stem tip stops rotating when it contacts the seat, so further torque turns the stem, but not the tip, preventing damage to the tip.
