Profile: Betts Industries, Inc. designs and produces components such as valves, manlids and pressure/vacuum relief valves for highway cargo tanks & various other industrial applications. We supply manlids, pressure/vacuum relief valves and aluminum discharge valves for cargo tanks transporting petroleum products. We also have stainless steel manlids & discharge valves for cargo tanks transporting acids, solvents & other chemicals, pneumatic valves & venting equipment, butterfly valves, and valves for products transported at elevated temperatures.