The Equilibar® High Flow series is a very compact pressure regulator, similar to the multi-orifice Low Flow back pressure regulators. These High Flow units have quite a small footprint, yet they can handle a Cv value up to 0,41. Like all Equilibar back pressure regulators, the rangeability surpasses any other traditional valve. The minimum Cv value of the High Flow regulators, in open loop control, is 1·E-05. This means this instrument can control it’s upstream pressure with a very large turndown ratio even when the flow varies over a wide range as well.

High Flow Series – available in 3 different pressure ratings

• The standard HF units go up to 69 bar gauge (1.000 PSI). With 28 inlet orifices and 11 (larger) outlet orifices, the HF unit can digest more flow than any other product line within the Equilibar Research Series. Together, these orifices provide a flow  capacity up to a maximum Cv of 0,41 with a turn down ratio still maintained at 1:100.000 (sometimes even more!). Performance of the HF uit is equally superb though when used at the low end of its capacity.
  For example, if you use the unit with its maximum pressure it can digest up to 1.250 ln/min of air or 330 ln/hour of water without exceeding a 1 bar pressure drop. When applied in open loop, the flow capacity goes down to 30 mln/min Air or 8 mln/hour water.
• The “medium pressure” variant is the H3PF2 unit, which goes up to 206 bar gauge (3.000 PSI). These H3PF back pressure regulators also have 28 inlet orifices and 11 outlet orifices; the body is thicker than the HF unit, which results in the higher pressure rating. With its maximum capacity up to a Cv of 0,6, this unit can release almost 1.000 ln/min from the process while maintaining the pressure constant. Its turndown ratio of 1:100.000 ensures such stable pressure control even if the flow drops to a few mln/min.
• The H6PF3 are the “high pressure” units of the High Flow Series. The main difference compared to the previous 2 types in this product line, is the Maximum Allowable Working Pressure (MAWP) of this unit. This unit is available up to 412 bar (6000 PSI). The orifice pattern is the same as the other High Flow Series regulators, but just like the H3PF unit, it has a slightly larger footprint. Considering this control valve’s  Cv value of 0,35, a diameter of only 70 mm and a height of 42 mm it is still remarkably compact! This unit controls upstream pressure from 1…1000 m3n/h of Air or 4 m3/h of water at a pressure of 400 bar. The pressure rangeability has a turn down ratio of approximately 1:50.

High Flow Series for stable pressure control even under demanding process conditions

Without a doubt, the units in the Equilibar High Flow Series are very versatile. In addition, the instruments are capable of handling two-phase flow and supercritical media and even media containing particles. Although it is always better to use a filter upstream of any control valve, in cases where it is impossible to keep particles out of the process media (such as crystallization processes), smooth process control with only limited maintenance or downtime is more than feasible with these back pressure regulators.  Depending on their size and amount and the level of abrasiveness, particles in the process can be a complicated parameter to work with.  As explained in our Expertise section, PCS specializes in precision process control for such complex process conditions! Please contact us if you have such a challenge in your application so we can look into the optimal solution for your process together.

Applications & Trials with the High Flow Series

Common applications where the HF Series is applied are fuel cell testing equipment, high-pressure pump testing and pilot-plant-scale-catalysis research. The units in the HF Series are supplied quite frequently, so we regularly have it on stock. If you are interested to run a test or to evaluate the performance of HF units, we might be able to arrange a trial delivery from stock. Check out the possibilities for a product trial.

Equilibar® High Flow Series | Higher flows, excellent rangeability