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<< Click to Display Table of Contents >> Navigation: LCR-II Product Manual > Installation > Valves |
When ordered as part of a meter system with a LCR-II, Liquid Control control valves are bolted onto the meter and wired to the LCR-II at the factory. Electronic control valves can also be ordered separately and retrofit onto meter systems already in service. These valves will need to be piped and wired in the field. For piping instructions, refer to the valve manual. This manual includes wiring instructions for the valves.
To control flow, the LCR-II energizes and deenergizes solenoid-operated valves on external bypass piping routed off the main product flow. The solenoid operated valves close off and open the bypass pipes. The bypass pipes redirect some of the product flow in order to open and close the control valve. These solenoid-operated valves must be wired to the LCR-II CPU board during installation.
Liquid Controls offers single-stage and two-stage electronic valves. Single stage valves have one solenoid valve (S1) and two positions—an open position and a closed position. Two-stage valves have two solenoid valves (S1 & S2) and three positions—open, closed, and dwell flow. Dwell flow is a low flow rate setting controlled by the S2 solenoid and initiated shortly before the register reaches a preset value.
Compatibility |
The LCR-II is also compatible with many other brands and types of valves. |
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