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.


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


Time-tested hydraulically balanced piston, seal and spacer design to pilot service flow and regeneration
Solid, lead-free brass valve body for superior strength and durability
Backwash capacity handles tanks up to 30″ diameter
1-1/2″ top mount control valve ideal for smaller size commercial/industrial applications
Consistent brining regardless of salt levels with timed brine refills
Choice of 7 or 12 day clock, manual or meter
Continuous flow rate of 51 GPM with a backwash of 49 GPM


On-line analysis and process control of the oil refining, metallurgy,chemical synthesis industry process;


DR20\40\50\20T\40T Soften valve series is floating bed, all appearance and geometric parameters and parts is the same as the corresponding GR20\40\50\20T\40T, floating bed has a good water quality, to adapt high hardness of the raw water, configuration swap tank should be fine and high, runing velocity in the 30-60 m/h, but resin filling rate must be above 90%, being stable working pressure,The floating bed is not suitable for frequent starting and changing water consumption.


Single stage RO controller used for conductivity monitoring and process program control .
![BSQ-MINI] Water Quality Monitoring Transmitter, EC/ER/PH/ORP](https://chimaytech.net/wp-content/uploads/2023/11/图2-300x300.jpg)
![BSQ-MINI Water Quality Monitoring Transmitter1 BSQ-MINI] Water Quality Monitoring Transmitter, EC/ER/PH/ORP](https://chimaytech.net/wp-content/uploads/2023/11/图1-300x300.jpg)
BSQ-MINI is widely used in metallurgical manufacturing, electric power, light industry, textile, water treatment equipment, tap water pipe network and scientific research and other industrial sectors.




GR20\40\50\20T\40T series up flow regeneration fixed bed large valve series, water production range is 15T/ h-70t /h, the inlet flow meter is used to set the cycle of water production, slow backwash water and wash water, and the brine flow meter and the brine electric valve are used to specifically measure brine absorption and salt tank water supply.In the flow mode, the internal flow transducer realizes the switch of all stations as long as the amount of brine,the amount of slow washing water and the amount of washing water is set according to the volume (liter) of the swap tank. After the period of softening water amount (ton) is set according to the hardness of the raw water, each station decreases to “0” according to the set value, and stops decreasing and maintains when the water is out of service or no water.