Can United Enertech provide Explosion Proof (NEMA 7) or Weather Resistance (NEMA 4) actuators?

Yes, we use the Belimo ZS-260 housing with the Belimo Actuators.

Housing Listing - UL and CSA; Class I, Zone 1&2, Groups B, C, D, (NEMA 7), Class II, Division 1&2, Groups E, F and G, (NEMA 9), Class III, Hazardous (classified) Locations, outdoor application NEMA 4.