Home / Markets / WEAVALVES / Products / Hazardous Rated / Valves Valves Valve products that have ratings for use in hazardous locations. Includes both valves and transmitters. Valve Valves that have ratings for use in hazardous locations. Some models of stainless steel ball valves. Applications include gas or liquid flow control and mixing or diverting liquids and gases. Transmitters 1 to 6 switch outputs for 14 varieties including sealed switches and high current switches. Applications include rotary or linear valve indication and industrial damper position monitoring. Compact.