MACRO Copper DC 3V Gas Water Heater Solenoid Valve Self-priming Valve Descriptions: Type: Water Heater Accessories Function: Self-priming Product Weight: 155g Material: Copper Working Voltage: DC 3V Advantages: 1.Solenoid valve is a magnetic force to overcome the pressure of the spring to drive spool action 2.Sealing ring, spring and valve body are separated 3.Safety and power saving Package includes: 1 x Solenoid Valve Detail Pictures: