Up for auction is a new Old Stock Stanley D-4990 Low Energy Swing Door kit that never been install. Buyer pays shipping anywhere in the world or local pickups are free and easy. Below is some info I found on the net.
New Yokogawa DP harp Pressure Transmitter With Chemical Seal Measuring System with Capillary (see pictures) A chemical seal measuring system is made up of a diaphragm seal attached to a pressure measuring instrument (pressure transmitter). This systems also include a capillary separating the diaphragm seal and measuring instrument which allows for remote reading. In all cases, the components of the chemical seal measuring system must not be separated.
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