Liquid Controls LectroCount LCR 600, Installation-Parts

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Installation
45
Two-Stage Valves
The three most common Liquid Controls meter systems with two stage valves are:
· a block valve with a S1 and a S2 solenoid-operated valve fitted onto external piping (A2848-11)
· a block valve with a S2 solenoid-operated valve (A2859-11) and a 3-way solenoid on the LCR 600
·
and an E-7 valve with a S1 and a S2 solenoid-operated valve
A2848-11 Valve
This two stage control valve has a S1 and a S2 solenoid operated valve. The S1 solenoid-operated valve
is located at the meeting point of three bypass pipes: one pipe from the inlet side of the valve, one from
the top of the block valve, and one from the outlet side of the valve. The S2 solenoid valve is located on a
bypass pipe that connects the inlet and outlet sides of the control valve. It opens while the control valve is
closed to supply the dwell flow. This valve is typically used in refined fuels applications.