Relay Symbols and Electromagnets - Electrical Symbols 42 rowsSymbol Description; Relay / solenoid operated (Coil and Switch) Generic symbol + info : Relay / solenoid operated: Relay / solenoid operated : Relay / solenoid operated Coil and pushbutton: Relay (Coil) Generic symbol : Relay (Coil) Generic symbol: Relay : Double coil relay: Double coil relay : Two operating relay windings in opposite directions: Double coil relay : Overcurrent relayDESCRIPTIONDESCRIPTIONRelay / solenoid operated (Coil and Switch) Generic syRelay / solenoid operatedRelay / solenoid operatedRelay / solenoid operated Coil and pushbuttonRelay (Coil) Generic symbolRelay (Coil) Generic symbolRelayDouble coil relaySee all 42 rows on wwwtrical-symbols Solenoid Valve Symbols Solenoid Valve and Common Pneumatic System Symbols. The spring pushes from the side that is drawn on and will return the valve back to its failsafe position. Symbol for pressure inlet port of valve. Symbol for 2 port valve with two positions, one position valve open with flow in both directions or valve closed with both ports blocked. Symbol for 3 port valve with 2 positions.