Valve Coils

Specifications:
1) Ambient environment:
    A) Ambient temperature: -20 ~ 50
    B) Relative humidity: less than 95% RH
    C) Highest permitted coil temperature: +130
2) Nominal voltage: AC220V, 50 / 60Hz, voltage tolerance is 10% to 15% 
3) Insulation resistance: not less than 100mOhm
4) Electric intensity: no breakdown and flashover under ac 1,500V/min 
5) The rising temperature of coil is no more than 80K under the ambient
    temperature of 40
6) Used for DHF series 4-way reversing valves