No energy consumption, with direct water adjustment. The cast brass structure is strong, anti-corrosion and accurate. Pressure regulating valve (constant flow valve) function similar to the water flow switch. This solenoid valve can not only maintain a constant flow of current, but also prevent dry burning and control the flow. Easy to install and maintain. Specification: Operating altitude: less than or equal to 2500m or 8202ft Operating temperature: 0 - 40 C Operating humidity: less than 95 percent (at 25 ) Type: guide (one-way) solenoid valve Mode of operation: short-time quota system Insulation grade: E Fluid: water Fluid: Temperature: 0 C-55 C Water pressure: 0.02-0.8MPa Water flow characteristics: Water pressure (Mpa): 0.02, 0.1, 0.3, 0.8 Flow (L or min): more than 5 more than 11 more than 18 more than 32 Lifespan: more than 100,000 times Nominal voltage: AC220V colour: copper color Material: brass size: about 6x6.4cm Package Contents: 1 x Solenoid Valve Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.