corrosion-proof valve 防腐蚀阀 ; 防腐汽门

explosion-proof valve [电] 防爆阀

acid-proof valve 耐酸阀

acid proof valve 耐酸阀

Galvanized sheet fire proof valve 镀锌板防火阀

dust-proof solenoid valve 防尘型电磁阀

explosion-wave-proof valve 防爆波阀门

explosion-proof solenoid valve 防爆型磁阀 ; 防爆型电磁阀

acid proof diaphragm valve 耐酸隔膜阀