F10A ALTITUDE BI LEVEL WITH ALTITUDE PILOT

F10B ON/OFF FLOAT ON/OFF LEVEL WITH FLOAT PILOT

F100 FLOAT MODULATING CONSTANT LEVEL FLOAT MODULATING

F106 FLOAT MODULATING & SOLENOID ON/OFF LEVEL BY SOLENOID & SECURITY BY FLOAT MODULATING

F200 DOWNSTREAM PRESSURE REDUCING

F300 NON-RETURN VALVE

F400 RATE OF FLOW FLOW LIMITER

F420 RATE OF FLOW & PRESSURE REDUCING FLOW LIMITER & PRESSURE REDUCING

F500 UPSTREAM PRESSURE SUSTAINING/RELIEF

F520 UPSTREAM/DOWNSTREAM PRESSURE SUSTAINING AND REDUCING

F550 SURGE ANTICIPATOR VALVE

F600 ELECTRICAL ON/OFF (OPENING/CLOSING) BY SOLENOID