... 2,30 technology patents 3,BV&CE AF05B-DN65B 24V gas detector with shut-off valve 1.Featuresl Lightweight, low-cost valve for ... l High-quality stainless steel solenoid enclosures l Dust-proof, water-proof, explosion-proof, and good sealing. l The degree of protection is the ... , examine if the driving mode and voltage of the associated supporting products with valves(such as alarm) match, so as not to ...