Profile: TRAC Regulator Co., Inc. offers high quality automatic pressure and temperature regulators. Our style A temperature regulator is a self sensing and self actuated temperature regulating valve, which automatically control liquid or steam flow through the valve in response to changes in the temperature of the controlling medium. Our style H pressure reducing valve is a self-contained, spring loaded, direct operated device for regulating and reducing high pressure water to any desired operating pressure within its adjustable range.