06.2020

FlowCon GreEQ - Full stroke equal percentage PICV

Latest contribution to FlowCon International’s comprehensive range of inserts is now available with our introduction on the world’s first full stroke equal percentage characterized insert named the FlowCon GreEQ insert.

More and more PICV specifications are calling for equal percentage control characteristic of the control seat and pre-setting without stroke limitation. Full stroke equal percentage seat control is new and opposed to linear seat control, which is the standard in typical PICVs including the FlowCon Green insert range. Equal percentage control characteristics in PICVs have previously only been achievable either through compensated actuator movement or stroke limitation, and in some instances both. 

Global engineering consulting firm Arup acknowledged the above limitation on existing PICVs, but they refused to accept either stroke limitation nor actuator compensation, which lead Arup, Jones Engineering and FlowCon International to team up and create an insert capable of and without compromise fulfilling the outlined project requirements resulting in the new FlowCon GreEQ insert. The collaboration has included product specifications and various witness tests ultimately resulting in the products being installed in the National Children’s Hospital in Ireland handled by Arup and Jones Engineering.

Given its equal percentage characteristic the FlowCon GreEQ insert is the perfect partner for application requiring accurate control in very low flow rates. The GreEQ insert is specially designed for low flow rates focusing on slow seat opening. The GreEQ holds a minimum setting of 17.3 l/hr (0.0763 GPM) but can, due to the slow seat opening, easily maintain constant flow rates down to 2 l/hr (0.0088 GPM) when modulated by the FlowCon FNQ actuator. In Fact, the seat opening is to the extent that it is the actuator resolution, which is defining the minimum flow rate and not the seat.

The FlowCon GreEQ range naturally fits in the standard FlowCon valve housings and its launch is supported by its own dedicated actuator range, FlowCon FNQ, available with analog control including feedback and optional capacitor failsafe function. 


Latest News

See all

Heating/Cooling - FlowCon PICV - FlowCon Essentia

With the new FlowCon Essentia valve series, we have taken only the essential functionalities of a PICV.....

FlowCon Topic Letter about Importance of Control Curves in PICVs
Heating/Cooling - PICV - Equal% Control - Linear Control - Accuracy - Turn Down Ratio - Rangeability - Performance Charts

Equal percentage control vs. linear control – which is better when and why?

FlowCon Topic Letter about Rangeability and Turn Down Ratio
PICV - FlowCon Green - FlowCon GreEQ - FlowCon SM - FlowCon Essentia

Definition and use of Rangebility, Resolution and Turn Down Ratio in FlowCon PICVs

FlowCon Topic Letter about Leakage Classification IEC60534-4
PICV - PITCV - TCV - FlowCon Green - FlowCon SM - FlowCon FIT - FlowCon Essentia - FlowCon EVS

Article is updated to include FlowCon Essentia. All actuated FlowCon valves are classified according to Int. Standard IEC60534-4, Class IV and V

FlowCon Topic Letter about High Performance Composite Material
PICV - DPCV - TCV - ABV - Termostatic Valve

Proven stable and durable in HVAC

Cooling - Air handling units - FlowCon Green - FlowCon SM

New recreational facilities including opening of the world's longest air-conditioned outdoor walking track open the possibility of a healthier…