Dynatech engineers, an iso-14001 certified company, manufactures various types of hydraulic motors, valves and steering units. Being a part of that directional control valves are available as mono-stack; series, parallel or tandem. Mono-block valves are offered in one, two and three section units. Stack valves can have as many as ten sections. Mono-stack valves in parallel circuit combine the lower manufacturing cost of a mono-block with the versatility of a stack valve; two to six spools are standard. The mono-stack design eliminates between-section leakage and spool bind. Salient features are as follows: