ROC-8221 Single Stage Double Channels RO Controller
ROC-8221 is a combined control instrument of a single-stage reverse osmosis controller and double-channel on-line conductivity instrument.


ROC-8221 is a combined control instrument of a single-stage reverse osmosis controller and double-channel on-line conductivity instrument.

Typical applications • Widely used in thermal boiler deaerator water and large and medium-sized industrial boiler feed water; • Operational supervision of reactor Primary circuit, secondary circuit circuits and condensate system; • On-line analysis of dissolved oxygen in circulating water of heat exchange system; • Deaeration control of marine fresh water system, thermal system and…


Easily-adjustable, 5-cycle, downflow-brining control
Rugged, long-life construction features a lead-free brass valve body
Uses conditioned water for regeneration


Single stage RO controller used for conductivity monitoring and process program control .


FLECK control valve 5600 softening water equipment generally uses fixed bed downstream
regeneration, the working process is operation, backwashing, regeneration, replacement,
positive washing, salt tank water injection.


Applicable to all kinds of small and medium-sized single-stage, double-stage reverse osmosis control system. With simple operation, complete measurement and configuration, highly integrated system


a. On-line analysis and process control of the oil refining, metallurgy,chemical synthesis industry process;
b. Water quality on-line analysis for the power industry, electronic industry,pharmaceutical industry, clinical equipment, food industry, beverage industry etc;
c. Online analysis and drug maintenance of the process for environmental monitoring, waste water treatment, water purification ;
d. Industry of the people’s livelihood, such as municipal water treatment, circulating cooling water, swimming pool management, scientific and technological agriculture;
e. The biological fermentation, industrial coating, chemical process experimental study.


One kind of popular and cost-effective online pH/ORP controller.

