BDV solenoid valve: aluminum body panels fit NAMUR solenoid valve and pipe connection G1 / 4 air connection with two five, two three-way normally closed or normally open function single solenoid (optional double solenoid) BDV510C0 IP65 Waterproof grade general 24VDC coil / BDV510C3 BDV520C3 IP65 waterproof rating NASS intrinsically safe coil CT6 Explosion / BDV510C5 BDV520C5 IP66 protection grade aluminum shell explosion -CT6 SS316L body CT6 Explosion strong anti-corrosion NAMUR connection plate and tube connection type solenoid valve G1 / 4 air connection with two five, two three-way normally closed or normally open function single solenoid (optional double solenoid) BDV610C0 BDV620C0 IP65 waterproof rating common 24VDC coil / BDV610C4 IP66 protection grade SS316L shell explosion -CT6 C3- intrinsically safe coil (Exd II CT6) C4- stainless steel coil flameproof enclosure (Exd II CT6) C5- aluminum coil flameproof (Exd II CT6) C7- proof encapsulated coil (Exmb II T5)