Features: No energy consumption, with direct and stable water regulation function. Cast brass structure, reliable wear resistance and precise corrosion protection. A pressure regulating valve (constant flow valve) works as a water flow switch. This solenoid valve not only maintains a constant and stable flow of current, but also prevents dry burning and monitors the flow rate. Easy to install and maintain. Specifications: Body: Brass Thread Size: 1/2" Weight: 212g Size: approx. 6*6.4cm/2.4*2.5in Working Altitude: ≤2500m/8202ft Working Temperature: 0-40℃ Working Humidity: 5 > 11 > 18 > 32 Duration: > 100,000 times Package includes: 1 x water valve