Surface Equipment - Anti-Siphon Back Pressure Check Valves,
High Pressure Check Valves, High Pressure Chemical Filters
and several versions of Manifold Assemblies are among the
accessories developed for the surface side of the installations.

Sub-Surface Equipment - For the downhole side of installations, D&D has created a product line consisting of Chemical Injection Valves, Chemical Injection Check Valves/Mandrels and Corrosion Coupon Holder Assemblies.

YZ Systems - As the leading manufacturer of Hydrocarbon
Sampling and Natural Gas Odorization Systems, YZ Systems provides a complete turn-key system approach to sampling and
odorization applications. D&D DesignTech has been personally
involved with the YZ organization for more than 25 years.
D&D is ready to provide the YZ customer with sales, service,
installations or our complete repair service.