Rated input voltage: AC220-240V Interface: G3/4" Frequency: 50/60Hz Insulation class: Class F Environmental conditions: ambient temperature -10°C to 60°C; relative humidity not more than 95% (at 25°C) Start-up characteristics: when power supply voltage is 85% of the rated voltage and the test water pressure is 0.02-0.80MPa, the water inlet valve should be able to start normally Vibration test: fix the water inlet valve on the vibrating table; the water inlet valve should be able to start normally after 10 minutes of vibration on each of the three axes at a full amplitude of 3 mm and a vibration frequency of 22 Hz Flow characteristics: connect the water inlet valve to the pressure regulating water source according to the working position; under the specified water pressure, apply rated voltage for 1 minute; flow rate must meet applicable performance standards Electrical rigidity: use high-voltage test equipment with a voltmeter accuracy of at least 5%; leakage current within 0.5mA; test applied between conductive part and mounting hole Continuous energization: if the water inlet valve does not supply water, continuously energize for 12 hours at rated voltage; monitor with a voltmeter; the valve body should not deform and the coil should not burn out Insulation resistance inspection: measure with a 500V megohmmeter or insulation resistance tester with an error not exceeding 5%; insulation resistance between conductive part and exposed non-conductive part should be greater than 100MΩ