White Rodgers Cooling Controls TXVs are designed for a wide range of air conditioning, refrigeration, heat pump, and chiller applications. Emerson uses stainless steel power elements that are unsusceptible to corrosion. We offer products with conventional, as well as balanced ported designs that are advantageous when applied to systems with large load variations and/or floating head applications. Emerson also manufactures bi-flow designs for use in heat pumps and many of our TXVs have a take-apart design for ease of service. Emerson thermal expansion valves cover a wide range of nominal capacity, from 1/2 - 100 Ton.