Spence Engineering Co., Inc., has announced the ET134 Temperature/Pressure Regulators with Cascade Control that virtually eliminates wide temperature fluctuations by preventing spikes in pressure caused by changes in process load. Sensors continuously reset the pressure setting as the temperature fluctuates. In addition, the ET134 utilizes a vapor tension thermostat to prevent ambient conditions from affecting temperature control. The ET134 is available in 3/8" through 12" sizes in cast iron and cast steel and is suited for fluid, gas and vapor applications, especially instantaneous water heaters. Spence Engineering Co., Inc. www.spenceengineering.com